* splittet zorba(dyn).pas into xqc.pas and zorba(dyn).pas

git-svn-id: http://svn.freepascal.org/svn/fpc/trunk@14265 3ad0048d-3df7-0310-abae-a5850022a9f2

8 files changed, 2142 insertions, 2096 deletions

diff --git a/packages/zorba/Makefile b/packages/zorba/Makefile
index 380112b857..772058d72d 100644
--- a/packages/zorba/Makefile
+++ b/packages/zorba/Makefile
@@ -1,10 +1,10 @@
 #
-# Don't edit, this file is generated by FPCMake Version 2.0.0 [2009/11/01]
+# Don't edit, this file is generated by FPCMake Version 2.0.0 [2009/11/14]
 #
 default: all
 MAKEFILETARGETS=i386-linux i386-go32v2 i386-win32 i386-os2 i386-freebsd i386-beos i386-haiku i386-netbsd i386-solaris i386-qnx i386-netware i386-openbsd i386-wdosx i386-darwin i386-emx i386-watcom i386-netwlibc i386-wince i386-embedded i386-symbian m68k-linux m68k-freebsd m68k-netbsd m68k-amiga m68k-atari m68k-openbsd m68k-palmos m68k-embedded powerpc-linux powerpc-netbsd powerpc-amiga powerpc-macos powerpc-darwin powerpc-morphos powerpc-embedded sparc-linux sparc-netbsd sparc-solaris sparc-embedded x86_64-linux x86_64-freebsd x86_64-darwin x86_64-win64 x86_64-embedded arm-linux arm-palmos arm-darwin arm-wince arm-gba arm-nds arm-embedded arm-symbian powerpc64-linux powerpc64-darwin powerpc64-embedded avr-embedded armeb-linux armeb-embedded
 BSDs = freebsd netbsd openbsd darwin
-UNIXs = linux $(BSDs) solaris qnx
+UNIXs = linux $(BSDs) solaris qnx haiku
 LIMIT83fs = go32v2 os2 emx watcom
 OSNeedsComspecToRunBatch = go32v2 watcom
 FORCE:
@@ -267,178 +267,178 @@ PACKAGESDIR:=$(wildcard $(FPCDIR) $(FPCDIR)/packages $(FPCDIR)/packages/base $(F
 override PACKAGE_NAME=zorba
 override PACKAGE_VERSION=0.9.9
 ifeq ($(FULL_TARGET),i386-linux)
-override TARGET_UNITS+=zorba zorbadyn
+override TARGET_UNITS+=xqc zorba zorbadyn
 endif
 ifeq ($(FULL_TARGET),i386-go32v2)
-override TARGET_UNITS+=zorba zorbadyn
+override TARGET_UNITS+=xqc zorba zorbadyn
 endif
 ifeq ($(FULL_TARGET),i386-win32)
-override TARGET_UNITS+=zorba zorbadyn
+override TARGET_UNITS+=xqc zorba zorbadyn
 endif
 ifeq ($(FULL_TARGET),i386-os2)
-override TARGET_UNITS+=zorba zorbadyn
+override TARGET_UNITS+=xqc zorba zorbadyn
 endif
 ifeq ($(FULL_TARGET),i386-freebsd)
-override TARGET_UNITS+=zorba zorbadyn
+override TARGET_UNITS+=xqc zorba zorbadyn
 endif
 ifeq ($(FULL_TARGET),i386-beos)
-override TARGET_UNITS+=zorba zorbadyn
+override TARGET_UNITS+=xqc zorba zorbadyn
 endif
 ifeq ($(FULL_TARGET),i386-haiku)
-override TARGET_UNITS+=zorba zorbadyn
+override TARGET_UNITS+=xqc zorba zorbadyn
 endif
 ifeq ($(FULL_TARGET),i386-netbsd)
-override TARGET_UNITS+=zorba zorbadyn
+override TARGET_UNITS+=xqc zorba zorbadyn
 endif
 ifeq ($(FULL_TARGET),i386-solaris)
-override TARGET_UNITS+=zorba zorbadyn
+override TARGET_UNITS+=xqc zorba zorbadyn
 endif
 ifeq ($(FULL_TARGET),i386-qnx)
-override TARGET_UNITS+=zorba zorbadyn
+override TARGET_UNITS+=xqc zorba zorbadyn
 endif
 ifeq ($(FULL_TARGET),i386-netware)
-override TARGET_UNITS+=zorba zorbadyn
+override TARGET_UNITS+=xqc zorba zorbadyn
 endif
 ifeq ($(FULL_TARGET),i386-openbsd)
-override TARGET_UNITS+=zorba zorbadyn
+override TARGET_UNITS+=xqc zorba zorbadyn
 endif
 ifeq ($(FULL_TARGET),i386-wdosx)
-override TARGET_UNITS+=zorba zorbadyn
+override TARGET_UNITS+=xqc zorba zorbadyn
 endif
 ifeq ($(FULL_TARGET),i386-darwin)
-override TARGET_UNITS+=zorba zorbadyn
+override TARGET_UNITS+=xqc zorba zorbadyn
 endif
 ifeq ($(FULL_TARGET),i386-emx)
-override TARGET_UNITS+=zorba zorbadyn
+override TARGET_UNITS+=xqc zorba zorbadyn
 endif
 ifeq ($(FULL_TARGET),i386-watcom)
-override TARGET_UNITS+=zorba zorbadyn
+override TARGET_UNITS+=xqc zorba zorbadyn
 endif
 ifeq ($(FULL_TARGET),i386-netwlibc)
-override TARGET_UNITS+=zorba zorbadyn
+override TARGET_UNITS+=xqc zorba zorbadyn
 endif
 ifeq ($(FULL_TARGET),i386-wince)
-override TARGET_UNITS+=zorba zorbadyn
+override TARGET_UNITS+=xqc zorba zorbadyn
 endif
 ifeq ($(FULL_TARGET),i386-embedded)
-override TARGET_UNITS+=zorba zorbadyn
+override TARGET_UNITS+=xqc zorba zorbadyn
 endif
 ifeq ($(FULL_TARGET),i386-symbian)
-override TARGET_UNITS+=zorba zorbadyn
+override TARGET_UNITS+=xqc zorba zorbadyn
 endif
 ifeq ($(FULL_TARGET),m68k-linux)
-override TARGET_UNITS+=zorba zorbadyn
+override TARGET_UNITS+=xqc zorba zorbadyn
 endif
 ifeq ($(FULL_TARGET),m68k-freebsd)
-override TARGET_UNITS+=zorba zorbadyn
+override TARGET_UNITS+=xqc zorba zorbadyn
 endif
 ifeq ($(FULL_TARGET),m68k-netbsd)
-override TARGET_UNITS+=zorba zorbadyn
+override TARGET_UNITS+=xqc zorba zorbadyn
 endif
 ifeq ($(FULL_TARGET),m68k-amiga)
-override TARGET_UNITS+=zorba zorbadyn
+override TARGET_UNITS+=xqc zorba zorbadyn
 endif
 ifeq ($(FULL_TARGET),m68k-atari)
-override TARGET_UNITS+=zorba zorbadyn
+override TARGET_UNITS+=xqc zorba zorbadyn
 endif
 ifeq ($(FULL_TARGET),m68k-openbsd)
-override TARGET_UNITS+=zorba zorbadyn
+override TARGET_UNITS+=xqc zorba zorbadyn
 endif
 ifeq ($(FULL_TARGET),m68k-palmos)
-override TARGET_UNITS+=zorba zorbadyn
+override TARGET_UNITS+=xqc zorba zorbadyn
 endif
 ifeq ($(FULL_TARGET),m68k-embedded)
-override TARGET_UNITS+=zorba zorbadyn
+override TARGET_UNITS+=xqc zorba zorbadyn
 endif
 ifeq ($(FULL_TARGET),powerpc-linux)
-override TARGET_UNITS+=zorba zorbadyn
+override TARGET_UNITS+=xqc zorba zorbadyn
 endif
 ifeq ($(FULL_TARGET),powerpc-netbsd)
-override TARGET_UNITS+=zorba zorbadyn
+override TARGET_UNITS+=xqc zorba zorbadyn
 endif
 ifeq ($(FULL_TARGET),powerpc-amiga)
-override TARGET_UNITS+=zorba zorbadyn
+override TARGET_UNITS+=xqc zorba zorbadyn
 endif
 ifeq ($(FULL_TARGET),powerpc-macos)
-override TARGET_UNITS+=zorba zorbadyn
+override TARGET_UNITS+=xqc zorba zorbadyn
 endif
 ifeq ($(FULL_TARGET),powerpc-darwin)
-override TARGET_UNITS+=zorba zorbadyn
+override TARGET_UNITS+=xqc zorba zorbadyn
 endif
 ifeq ($(FULL_TARGET),powerpc-morphos)
-override TARGET_UNITS+=zorba zorbadyn
+override TARGET_UNITS+=xqc zorba zorbadyn
 endif
 ifeq ($(FULL_TARGET),powerpc-embedded)
-override TARGET_UNITS+=zorba zorbadyn
+override TARGET_UNITS+=xqc zorba zorbadyn
 endif
 ifeq ($(FULL_TARGET),sparc-linux)
-override TARGET_UNITS+=zorba zorbadyn
+override TARGET_UNITS+=xqc zorba zorbadyn
 endif
 ifeq ($(FULL_TARGET),sparc-netbsd)
-override TARGET_UNITS+=zorba zorbadyn
+override TARGET_UNITS+=xqc zorba zorbadyn
 endif
 ifeq ($(FULL_TARGET),sparc-solaris)
-override TARGET_UNITS+=zorba zorbadyn
+override TARGET_UNITS+=xqc zorba zorbadyn
 endif
 ifeq ($(FULL_TARGET),sparc-embedded)
-override TARGET_UNITS+=zorba zorbadyn
+override TARGET_UNITS+=xqc zorba zorbadyn
 endif
 ifeq ($(FULL_TARGET),x86_64-linux)
-override TARGET_UNITS+=zorba zorbadyn
+override TARGET_UNITS+=xqc zorba zorbadyn
 endif
 ifeq ($(FULL_TARGET),x86_64-freebsd)
-override TARGET_UNITS+=zorba zorbadyn
+override TARGET_UNITS+=xqc zorba zorbadyn
 endif
 ifeq ($(FULL_TARGET),x86_64-darwin)
-override TARGET_UNITS+=zorba zorbadyn
+override TARGET_UNITS+=xqc zorba zorbadyn
 endif
 ifeq ($(FULL_TARGET),x86_64-win64)
-override TARGET_UNITS+=zorba zorbadyn
+override TARGET_UNITS+=xqc zorba zorbadyn
 endif
 ifeq ($(FULL_TARGET),x86_64-embedded)
-override TARGET_UNITS+=zorba zorbadyn
+override TARGET_UNITS+=xqc zorba zorbadyn
 endif
 ifeq ($(FULL_TARGET),arm-linux)
-override TARGET_UNITS+=zorba zorbadyn
+override TARGET_UNITS+=xqc zorba zorbadyn
 endif
 ifeq ($(FULL_TARGET),arm-palmos)
-override TARGET_UNITS+=zorba zorbadyn
+override TARGET_UNITS+=xqc zorba zorbadyn
 endif
 ifeq ($(FULL_TARGET),arm-darwin)
-override TARGET_UNITS+=zorba zorbadyn
+override TARGET_UNITS+=xqc zorba zorbadyn
 endif
 ifeq ($(FULL_TARGET),arm-wince)
-override TARGET_UNITS+=zorba zorbadyn
+override TARGET_UNITS+=xqc zorba zorbadyn
 endif
 ifeq ($(FULL_TARGET),arm-gba)
-override TARGET_UNITS+=zorba zorbadyn
+override TARGET_UNITS+=xqc zorba zorbadyn
 endif
 ifeq ($(FULL_TARGET),arm-nds)
-override TARGET_UNITS+=zorba zorbadyn
+override TARGET_UNITS+=xqc zorba zorbadyn
 endif
 ifeq ($(FULL_TARGET),arm-embedded)
-override TARGET_UNITS+=zorba zorbadyn
+override TARGET_UNITS+=xqc zorba zorbadyn
 endif
 ifeq ($(FULL_TARGET),arm-symbian)
-override TARGET_UNITS+=zorba zorbadyn
+override TARGET_UNITS+=xqc zorba zorbadyn
 endif
 ifeq ($(FULL_TARGET),powerpc64-linux)
-override TARGET_UNITS+=zorba zorbadyn
+override TARGET_UNITS+=xqc zorba zorbadyn
 endif
 ifeq ($(FULL_TARGET),powerpc64-darwin)
-override TARGET_UNITS+=zorba zorbadyn
+override TARGET_UNITS+=xqc zorba zorbadyn
 endif
 ifeq ($(FULL_TARGET),powerpc64-embedded)
-override TARGET_UNITS+=zorba zorbadyn
+override TARGET_UNITS+=xqc zorba zorbadyn
 endif
 ifeq ($(FULL_TARGET),avr-embedded)
-override TARGET_UNITS+=zorba zorbadyn
+override TARGET_UNITS+=xqc zorba zorbadyn
 endif
 ifeq ($(FULL_TARGET),armeb-linux)
-override TARGET_UNITS+=zorba zorbadyn
+override TARGET_UNITS+=xqc zorba zorbadyn
 endif
 ifeq ($(FULL_TARGET),armeb-embedded)
-override TARGET_UNITS+=zorba zorbadyn
+override TARGET_UNITS+=xqc zorba zorbadyn
 endif
 override INSTALL_FPCPACKAGE=y
 ifeq ($(FULL_TARGET),i386-linux)
@@ -1741,9 +1741,9 @@ else
 UNITDIR_RTL=$(PACKAGEDIR_RTL)
 endif
 ifdef CHECKDEPEND
-$(PACKAGEDIR_RTL)/$(FPCMADE):
-	$(MAKE) -C $(PACKAGEDIR_RTL) $(FPCMADE)
-override ALLDEPENDENCIES+=$(PACKAGEDIR_RTL)/$(FPCMADE)
+$(PACKAGEDIR_RTL)/$(OS_TARGET)/$(FPCMADE):
+	$(MAKE) -C $(PACKAGEDIR_RTL)/$(OS_TARGET) $(FPCMADE)
+override ALLDEPENDENCIES+=$(PACKAGEDIR_RTL)/$(OS_TARGET)/$(FPCMADE)
 endif
 else
 PACKAGEDIR_RTL=
diff --git a/packages/zorba/Makefile.fpc b/packages/zorba/Makefile.fpc
index 837ff75cb5..b29114f1ed 100644
--- a/packages/zorba/Makefile.fpc
+++ b/packages/zorba/Makefile.fpc
@@ -7,7 +7,7 @@ name=zorba
 version=0.9.9
 
 [target]
-units=zorba zorbadyn
+units=xqc zorba zorbadyn
 
 [require]
 
diff --git a/packages/zorba/fpmake.pp b/packages/zorba/fpmake.pp
index b5acd158ce..8656fb749d 100644
--- a/packages/zorba/fpmake.pp
+++ b/packages/zorba/fpmake.pp
@@ -20,21 +20,25 @@ begin
     P.SourcePath.Add('src');
     P.IncludePath.Add('src');
 
+    T:=P.Targets.AddUnit('xqc.pas');
+      with T.Dependencies do
+        begin
+          AddInclude('xqc_error.inc');
+          AddInclude('xqc_static_context_consts.inc');
+        end;
     T:=P.Targets.AddUnit('zorbadyn.pas');
       with T.Dependencies do
         begin
+          AddUnit('xqc.pas');
           AddInclude('zorba.inc');
-          AddInclude('zorba_error.inc');
           AddInclude('zorba_options.inc');
-          AddInclude('zorba_static_context_consts.inc');
         end;
     T:=P.Targets.AddUnit('zorba.pas');
       with T.Dependencies do
         begin
+          AddUnit('xqc.pas');
           AddInclude('zorba.inc');
-          AddInclude('zorba_error.inc');
           AddInclude('zorba_options.inc');
-          AddInclude('zorba_static_context_consts.inc');
         end;
 
 //    P.ExamplePath.Add('tests/');
diff --git a/packages/zorba/src/xqc.pas b/packages/zorba/src/xqc.pas
new file mode 100644
index 0000000000..ea2ecba5ac
--- /dev/null
+++ b/packages/zorba/src/xqc.pas
@@ -0,0 +1,2052 @@
+(*
+ * Copyright 2006-2008 The FLWOR Foundation.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *)
+
+{
+  Translation of the zorba headers for FreePascal
+  Copyright(C) 2009 by Ivo Steinmann
+}
+
+unit xqc;
+
+{$mode objfpc}{$H+}
+{$PACKRECORDS C}
+{$MACRO ON}
+
+interface
+
+uses
+  ctypes;
+
+{$IFDEF UNIX}
+  {$DEFINE extdecl:=cdecl}
+{$ENDIF}
+{$IFDEF WINDOWS}
+  {$DEFINE extdecl:=stdcall}
+{$ENDIF}
+
+{$i xqc_error.inc}
+{$i xqc_static_context_consts.inc}
+
+type
+  pfile = pointer;
+
+  XQC_Implementation = ^XQC_Implementation_s;
+  XQC_Implementation_Ref = ^XQC_Implementation;
+
+  XQC_Query = ^XQC_Query_s;
+  XQC_Query_Ref = ^XQC_Query;
+
+  XQC_StaticContext = ^XQC_StaticContext_s;
+  XQC_StaticContext_Ref = ^XQC_StaticContext;
+
+  XQC_DynamicContext = ^XQC_DynamicContext_s;
+  XQC_DynamicContext_Ref = ^XQC_DynamicContext;
+
+  XQC_Sequence = ^XQC_Sequence_s;
+  XQC_Sequence_Ref = ^XQC_Sequence;
+
+  XQC_Item = ^XQC_Item_s;
+  XQC_Item_Ref = ^XQC_Item;
+
+  XQC_ItemFactory = ^XQC_ItemFactory_s;
+  XQC_ItemFactory_Ref = ^XQC_ItemFactory;
+
+  XQC_Collection = ^XQC_Collection_s;
+  XQC_Collection_Ref = ^XQC_Collection;
+
+  XQC_DataManager = ^XQC_DataManager_s;
+  XQC_DataManager_Ref = ^XQC_DataManager;
+
+  XQC_OutputStream = ^XQC_OutputStream_s;
+  XQC_InputStream = ^XQC_InputStream_s;
+  XQC_ErrorHandler = ^XQC_ErrorHandler_s;
+
+
+// external functions
+  external_function_init = procedure(out user_data: Pointer; global_user_data: Pointer); extdecl;
+
+  external_function_next = function(args: XQC_Sequence; argc: cint; out result: XQC_Item;
+    user_data: Pointer; global_user_data: Pointer): XQUERY_ERROR; extdecl;
+
+  external_function_release = procedure(user_data: Pointer; global_user_data: Pointer); extdecl;
+
+
+(**
+ * The ::XQC_Implementation struct provides factory functions for parsing queries.
+ * An XQC_Implementation object is thread-safe and can be used by multiple threads
+ * of execution at the same time.
+ *
+ * Creating an XQC_Implementation object can be done using the zorba_implementation function.
+ * Once created, the user is responsible for freeing the object by calling
+ * the free() function.
+ * The XQC_Implementation object should not be freed before all objects created using it's
+ * functions have been freed - doing so causes undefined behaviour.
+ *)
+  XQC_Implementation_s = record
+   (**
+    * Creates a static context suitable for use in the parse() and parse_file()
+    * functions. The user is responsible for freeing the ::XQC_StaticContext object returned by calling
+    * XQC_StaticContext::free().
+    *
+    * \param implementation The XQC_Implementation that this function pointer is a member of
+    * \param[out] context The newly created XQC_StaticContext object.
+    *
+    * \retval ::XQC_NO_ERROR
+    * \retval ::XQP0019_INTERNAL_ERROR
+    *)
+    create_context: function(impl: XQC_Implementation; out context: XQC_StaticContext): XQUERY_ERROR; extdecl;
+
+   (**
+    * Prepares a query from a string, returning an ::XQC_Query object.
+    * The user is responsible for freeing the ::XQC_Query object
+    * returned by calling XQC_Query::free().
+    *
+    * \param implementation The XQC_Implementation that this function pointer is a member of.
+    * \param string The query to prepare as a string.
+    * \param context The initial static context for this query, or null to use the default
+    *        static context.
+    * \param handler An optional error handler whose <code>error</code> function is called
+    *                if preparing the query fails.
+    * \param[out] expression The resulting prepared expression.
+    *
+    * \retval ::XQC_NO_ERROR
+    * \retval ::XQP0019_INTERNAL_ERROR
+    * \retval An XQuery static or type error (e.g. XPST*, XPTY* )
+    *)
+    prepare: function(impl: XQC_Implementation; query_string: pchar; context: XQC_StaticContext;
+      handler: XQC_ErrorHandler; out query: XQC_Query): XQUERY_ERROR; extdecl;
+
+    (**
+     * Prepares a query from a FILE pointer, returning an ::XQC_Query object.
+     * The user remains responsible for closing the file after parsing.
+     * The user is responsible for freeing the ::XQC_Query object returned by
+     * calling XQC_Query::free().
+     *
+     * \param implementation The XQC_Implementation that this function pointer is a member of.
+     * \param file The file containing the query to prepare.
+     * \param context The initial static context for this query, or null to use the default
+     *        static context.
+     * \param handler An optional error handler whose <code>error</code> function is called
+     *                if preparing the query fails.
+     * \param[out] expression The resulting prepared expression.
+     *
+     * \retval ::XQC_NO_ERROR
+     * \retval ::XQP0019_INTERNAL_ERROR
+     * \retval An XQuery static or type error (e.g. XPST*, XPTY* )
+     *)
+    prepare_file: function(impl: XQC_Implementation; query_file: pfile; context: XQC_StaticContext;
+      handler: XQC_ErrorHandler; out query: XQC_Query): XQUERY_ERROR; extdecl;
+
+    (**
+     * Prepares a query from a ::XQC_InputStream, returning an ::XQC_Query object.
+     * The user is responsible for freeing the ::XQC_Query object returned by
+     * calling XQC_Query::free().
+     *
+     * \param implementation The XQC_Implementation that this function pointer is a member of.
+     * \param stream The input stream returning the query to prepare.
+     *               free will be called on the XQC_InputStream after the query has been read.
+     * \param context The initial static context for this query, or null to use the default
+     *        static context.
+     * \param handler An optional error handler whose <code>error</code> function is called
+     *                if preparing the query fails.
+     * \param[out] expression The resulting prepared expression.
+     *
+     * \retval ::XQC_NO_ERROR
+     * \retval ::XQP0019_INTERNAL_ERROR
+     * \retval An XQuery static or type error (e.g. XPST*, XPTY* )
+     *)
+    prepare_stream: function(impl: XQC_Implementation; stream: XQC_InputStream; context: XQC_StaticContext;
+      handler: XQC_ErrorHandler; out query: XQC_Query): XQUERY_ERROR; extdecl;
+
+
+    (**
+     * Creates an item wrapper suitable for use in the ::XQC_Sequence::next function or
+     * the ::XQC_ItemFactory::create functions.
+     * The user is responsible for freeing the XQC_Item object returned by calling
+     * XQC_Item::free().
+     *
+     * \param implementation The XQC_Implementation that this function pointer is a member of
+     * \param[out] item The newly created XQC_Item wrapper object.
+     *
+  	 * \retval ::XQC_NO_ERROR
+  	 * \retval ::XQP0019_INTERNAL_ERROR
+     *)
+    create_item: function(impl: XQC_Implementation; out item: XQC_Item): XQUERY_ERROR; extdecl;
+
+
+    (**
+     * Creates a XQC_ItemFactory that can be used for creating items, i.e. instances of the
+     * XQuery data model (XDM).
+     * The user is responsible for freeing the XQC_ItemFactory object returned by calling
+     * XQC_ItemFactory::free().
+     *
+     * \param implementation The XQC_Implementation that this function pointer is a member of
+     * \param[out] factory The newly created XQC_ItemFactory  object.
+     *
+  	 * \retval ::XQC_NO_ERROR
+  	 * \retval ::XQP0019_INTERNAL_ERROR
+     *)
+    item_factory: function(impl: XQC_Implementation; out factory: XQC_ItemFactory): XQUERY_ERROR; extdecl;
+
+
+    (**
+     * Creates a XQC_DataManager that can be used for managing collections and documents.
+     * The user is responsible for freeing the XQC_DataManager object returned by calling
+     * XQC_DataManager::free().
+     *
+     * \param implementation The XQC_Implementation that this function pointer is a member of
+     * \param[out] data_manager The newly created XQC_DataManager object.
+     *
+  	 * \retval ::XQC_NO_ERROR
+  	 * \retval ::XQP0019_INTERNAL_ERROR
+     *)
+    data_manager: function(impl: XQC_Implementation; out data_manager: XQC_DataManager): XQUERY_ERROR; extdecl;
+
+
+    (**
+     * Called to free the resources associated with the XQC_Implementation.
+     *
+     * \param implementation The XQC_Implementation that this function pointer is a member of
+     *)
+    free: procedure(impl: XQC_Implementation); extdecl;
+
+    (**
+     * for internal use only
+     *)
+    data: pointer;
+  end;
+
+
+(**
+ * The ::XQC_Expression struct represents a pre-parsed query, and allows the user to execute
+ * that query any number of times. An ::XQC_Expression object is thread-safe and
+ * can be used by multiple threads of execution at the same time.
+ *
+ * ::XQC_Expression objects are created by calling the XQC_Implementation::prepare() or
+ * XQC_Implementation::prepare_file() functions.
+ * Once created, the user is responsible for freeing the object by calling the free() function.
+ * The ::XQC_Expression object should be freed before the ::XQC_Implementation object
+ * that created it.
+ *)
+ XQC_Query_s = record
+    (**
+     * This function returns the dynamic context that belongs to this query and
+     * is used during query execution.
+     * The context can be used, for example, to set values of external variables,
+     * the default collation, or the current datetime.
+     * It is only available if the query has been compiled, otherwise
+     * an error is reported. Moreover, the context must not be modified during the
+     * execution of a query (i.e. if a ResultIterator is opened).
+  	 * The user is responsible for freeing the ::XQC_DynamicContext object returned by calling
+  	 * XQC_DynamicContext::free().
+     *
+  	 * \retval ::XQC_NO_ERROR
+  	 * \retval ::XQP0019_INTERNAL_ERROR
+     *)
+    get_dynamic_context: function(query: XQC_Query; out context: XQC_DynamicContext): XQUERY_ERROR; extdecl;
+
+
+    (**
+     * This function returns the static context that belongs to this query.
+     * The static context is only available if the query has been compiled, otherwise
+     * an error is reported.
+     * The context has all the components and values that have been set by the either
+     * the static context that was passed when creating the query and and those that
+     * were set in the prolog of the query.
+     * Note that after compilation of the query the static context is a read only structure.
+  	 * The user is responsible for freeing the ::XQC_StaticContext object returned by calling
+  	 * XQC_StaticContext::free().
+     *
+  	 * \retval ::XQC_NO_ERROR
+  	 * \retval ::XQP0019_INTERNAL_ERROR
+     *)
+    get_static_context: function(query: XQC_Query; out context: XQC_StaticContext): XQUERY_ERROR; extdecl;
+
+
+   (**
+    * Executes the query represented by the XQC_Query object and prints the serialized XML
+    * output to the given FILE pointer. The user remains responsible for closing
+    * the file.
+    *
+    * \param query The XQC_Query that this function pointer is a member of.
+    * \param file The FILE pointer to print the serialized result to.
+    *
+    * \retval ::XQC_NO_ERROR
+    * \retval ::XQP0019_INTERNAL_ERROR
+    * \retval ::API0023_CANNOT_SERIALIZE_UPDATE_QUERY
+    * \retval An XQuery dynamic or type error (e.g. XPDY*, XPTY* )
+    *)
+    execute: function(query: XQC_Query; fileptr: pfile): XQUERY_ERROR; extdecl;
+
+
+   (**
+    * Executes the query represented by the XQC_Query object and prints the serialized
+    * output to the given FILE pointer. The target format of the serialization is
+    * specified by the passed serializer options.
+    *
+    * \param query The XQC_Query that this function pointer is a member of.
+    * \param options The Zorba_SerializerOptions_t that specifies serializer options.
+    * \param file The FILE pointer to print the serialized result to.
+    *
+    * \retval ::XQC_NO_ERROR
+    * \retval ::XQP0019_INTERNAL_ERROR
+    * \retval ::API0023_CANNOT_SERIALIZE_UPDATE_QUERY
+    * \retval An XQuery dynamic or type error (e.g. XPDY*, XPTY* )
+    *)
+    serialize_file: function(query: XQC_Query; options: pointer; fileptr: pfile): XQUERY_ERROR; extdecl;
+
+
+   (**
+    * Executes the query represented by the XQC_Query object and writes the serialized
+    * output to the given ::XQC_OutputStream. The target format of the serialization is
+    * specified by the passed serializer options.
+    *
+    * \param query The XQC_Query that this function pointer is a member of.
+    * \param options The Zorba_SerializerOptions_t that specifies serializer options.
+    * \param file The XQC_OutputStream to print the serialized result to.
+    *
+    * \retval ::XQC_NO_ERROR
+    * \retval ::XQP0019_INTERNAL_ERROR
+    * \retval ::API0023_CANNOT_SERIALIZE_UPDATE_QUERY
+    * \retval An XQuery dynamic or type error (e.g. XPDY*, XPTY*)
+    serialize_stream: function(query: XQC_Query; options: pointer; stream: XQC_OutputStream): XQUERY_ERROR; extdecl;
+
+
+   (**
+    * Checks if the query is an updating query.
+    *
+    * \param query The XQC_Query that this function pionter is a member of.
+    *
+    * \retval 1 if query is updating query, else 0
+    *)
+    is_update_query: function(query: XQC_Query): cint; extdecl;
+
+
+   (**
+    * Applies the updates declared in the query represented by the XQC_Query object.
+    *
+    * \param query The XQC_Query that this function pointer is a member of.
+    *
+    * \retval ::XQC_NO_ERROR
+    * \retval ::XQP0019_INTERNAL_ERROR
+    * \retval ::API0023_CANNOT_SERIALIZE_UPDATE_QUERY
+    * \retval An XQuery dynamic or type error (e.g. XPDY*, XPTY*)
+    apply_updates: function(query: XQC_Query): XQUERY_ERROR; extdecl;
+
+
+   (**
+    * Executes the query represented by the XQC_Query object.
+    * An ::XQC_Sequence object is returned which can be used to examine the results
+    * of the query execution. The user is responsible for freeing the
+    * ::XQC_Sequence object returned by calling XQC_Sequence::free().
+    *
+    * \param query The XQC_Query that this function pointer is a member of.
+    * \param[out] sequence The newly created XQC_Sequence object.
+    *
+    * \retval ::XQC_NO_ERROR
+    * \retval ::XQP0019_INTERNAL_ERROR
+    * \retval ::API0024_CANNOT_ITERATE_OVER_UPDATE_QUERY
+    * \retval An XQuery dynamic or type error (e.g. XPDY*, XPTY* )
+    *)
+    sequence: function(query: XQC_Query; out sequence: XQC_Sequence): XQUERY_ERROR; extdecl;
+
+
+    (**
+     * Sets the error handler whose <code>error</code> function is called
+     * if an error occurs when executing the query.
+     * The user keeps the ownership of this object and is required to freeing
+     * the aquired resources.
+     *)
+    set_error_handler: procedure(query: XQC_Query; handler: XQC_ErrorHandler); extdecl;
+
+
+   (**
+    * Called to free the resources associated with the XQC_Query.
+    *
+    * \param query The XQC_Query that this function pointer is a member of.
+    *)
+    free: procedure(query: XQC_Query); extdecl;
+
+
+    (**
+     * for internal use only
+     *)
+    data: pointer;
+  end;
+
+
+(**
+ * The ::XQC_StaticContext struct provides a way to specify values for the static context of
+ * the query to be prepared. An ::XQC_StaticContext object is not thread-safe - threads should
+ * each use their own instance of a ::XQC_StaticContext object (see create_child_context).
+ *
+ * ::XQC_StaticContext objects are created by calling the XQC_Implementation::create_context()
+ * function. Once created, the user is responsible for freeing the object by calling
+ * the free() function.
+ * The ::XQC_StaticContext object should be freed before the ::XQC_Implementation object that
+ * created it.
+ *)
+  XQC_StaticContext_s = record
+   (**
+    * Creates a child context of the given static context.
+    * A child context contains the same information as it's parent context but
+    * it allows the user to override and add information.
+    * The user is responsible for freeing the ::XQC_StaticContext object returned by calling
+    * XQC_StaticContext::free().
+    *
+    * \param context The XQC_StaticContext that this function pointer is a member of
+    * \param[out] child_context The newly created XQC_StaticContext object which is
+    *             a child of the given context.
+    *
+    * \retval ::XQC_NO_ERROR
+    * \retval ::XQP0019_INTERNAL_ERROR
+    *)
+    create_child_context: function(context: XQC_StaticContext; out child_context: XQC_StaticContext): XQUERY_ERROR; extdecl;
+
+
+   (**
+    * Adds a (prefix, uri) pair to the set of statically known namespaces of
+    * the given context.
+    *
+    * \param context The XQC_StaticContext that this function pointer is a member of.
+    * \param prefix The prefix of the namespace to add to the given XQC_StaticContext.
+    * \param uri    The uri of the namespace to add to the given XQC_StaticContext.
+    *
+    * \retval ::XQC_NO_ERROR
+    * \retval ::XQC_INTERNAL_ERROR
+    *)
+    declare_ns: function(context: XQC_StaticContext; const prefix: pchar; const uri: ppchar): XQUERY_ERROR; extdecl;
+
+
+   (**
+    * Returns the namespace uri that belongs to the given prefix.
+    *
+    * \param context The XQC_StaticContext that this function pointer is a member of
+    * \param prefix The prefix of the namespace to add to the given XQC_StaticContext.
+    * \param[out] result_ns The namespace uri of the namespace registered with the given prefix.
+    *
+    * \retval ::XQC_NO_ERROR
+    * \retval ::XQC_INTERNAL_ERROR
+    *)
+    get_ns_by_prefix: function(context: XQC_StaticContext; const prefix: pchar; out result_ns: ppchar): XQUERY_ERROR; extdecl;
+
+
+    (**
+     * Sets the value of the default namespace for elements and types.
+     *
+  	 * \param context The XQC_StaticContext that this function pointer is a member of
+     * \param uri The uri of the default element and type namespace to set in the given context.
+     *
+  	 * \retval ::XQC_NO_ERROR
+  	 * \retval ::XQC_INTERNAL_ERROR
+     *)
+    set_default_element_and_type_ns: function(context: XQC_StaticContext; const uri: pchar): XQUERY_ERROR; extdecl;
+
+
+   (**
+    * Returns the default namespace for elements and types.
+    *
+    * \param context The XQC_StaticContext that this function pointer is a member of
+    * \param[out] uri The uri of the default element and type namespace that is set in the given context.
+    *
+    * \retval ::XQC_NO_ERROR
+    * \retval ::XQC_INTERNAL_ERROR
+    *)
+    get_default_element_and_type_ns: function(context: XQC_StaticContext; out uri: pchar): XQUERY_ERROR; extdecl;
+
+
+   (**
+    * Sets the default namespace for functions.
+    *
+    * \param context The XQC_StaticContext that this function pointer is a member of
+    * \param uri The uri of the default function namespace to set in the given context.
+    *
+    * \retval ::XQC_NO_ERROR
+    * \retval ::XQC_INTERNAL_ERROR
+    *)
+    set_default_function_ns: function(context: XQC_StaticContext; const uri: pchar): XQUERY_ERROR; extdecl;
+
+
+   (**
+    * Returns the default namespace for functions set in this static context.
+    *
+    * \param context The XQC_StaticContext that this function pointer is a member of
+    * \param[out] uri The uri of the default function namespace that is set in the given context.
+    *
+    * \retval ::XQC_NO_ERROR
+    * \retval ::XQC_INTERNAL_ERROR
+    *)
+    get_default_function_ns: function(context: XQC_StaticContext; out uri: pchar): XQUERY_ERROR; extdecl;
+
+
+    (**
+     * Add a collation URI.
+     * The URI specifies the locale and collation strength of the collation that is added.
+     * A valid collation URI must begin with http://www.flworfound.org/collations/.
+     * This prefix is followed by a collation strength (i.e. PRIMARY, SECONDARY, TERTIARY,
+     * QUATTERNARY, or IDENTICAL) followed by a '/'.
+     * After the strength a lower-case two- or three-letter ISO-639 language code must follow.
+     * The URI may end with an upper-case two-letter ISO-3166.
+     * For example, http://www.flworfound.org/collations/PRIMARY/en/US
+     * specifies an english language with US begin the country..
+     *
+     * Internally, ICU is used for comparing strings. For detailed description see
+     * http://www.icu-project.org/apiref/icu4c/classCollator.html
+     * and http://www.icu-project.org/apiref/icu4c/classLocale.html
+     *
+     * \param context The XQC_StaticContext that this function pointer is a member of
+     * \param uri The URI of the collation to add.
+     *
+     * \retval ::XQC_NO_ERROR
+     * \retval ::XQST0038
+     * \retval ::XQC_INTERNAL_ERROR
+     *)
+    add_collation: function(context: XQC_StaticContext; const uri: pchar): XQUERY_ERROR; extdecl;
+
+
+    (**
+     * Set the URI of the default collation.
+     * (see http://www.w3.org/TR/xquery/#static_context)
+     *
+     * \param context The XQC_StaticContext that this function pointer is a member of
+     * \param uri The URI of the default collation to set
+     *
+     * \retval ::XQC_NO_ERROR
+     * \retval ::XQST0038
+     * \retval ::XQC_INTERNAL_ERROR
+     *)
+    set_default_collation: function(context: XQC_StaticContext; const uri: pchar): XQUERY_ERROR; extdecl;
+
+
+    (**
+     * Get the URI of the default collation. The uri returned is valid
+     * as long as the corresponding XQC_StaticContext object is valid.
+     *
+     * \param context The XQC_StaticContext that this function pointer is a member of
+     * \param[out] uri The URI of the default collation that is currently set in the given context.
+     *)
+    get_default_collation: function(context: XQC_StaticContext; out uri: pchar): XQUERY_ERROR; extdecl;
+
+
+    (**
+    * Sets the XQuery processor's version to either xquery_version_1_0 or xquery_version_1_1.
+    *
+    * \param context The XQC_StaticContext that this function pointer is a member of
+    * \param mode The xquery_version_t to set in the given context.
+    *
+    * \retval ::XQC_NO_ERROR
+    * \retval ::XQC_INTERNAL_ERROR
+    *)
+    set_xquery_version: function(context: XQC_StaticContext; mode: xquery_version_t): XQUERY_ERROR; extdecl;
+
+
+   (**
+    * Returns the XQuery processor's version that is set in the given static context.
+    *
+    * \param context The XQC_StaticContext that this function pointer is a member of
+    * \param[out] mode The xquery_version_t that is set in the given context.
+    *
+    * \retval ::XQC_NO_ERROR
+    * \retval ::XQC_INTERNAL_ERROR
+    *)
+    get_xquery_version: function(context: XQC_StaticContext; out mode: xquery_version_t): XQUERY_ERROR; extdecl;
+
+
+   (**
+    * Sets the XPath 1.0 compatibility mode to either xpath1_0 or xpath2_0.
+    *
+    * \param context The XQC_StaticContext that this function pointer is a member of
+    * \param mode The xpath1_0compatib_mode_t to set in the given context.
+    *
+    * \retval ::XQC_NO_ERROR
+    * \retval ::XQC_INTERNAL_ERROR
+    *)
+    set_xpath1_0_mode: function(context: XQC_StaticContext; mode: xpath1_0compatib_mode_t): XQUERY_ERROR; extdecl;
+
+
+   (**
+    * Returns the XPath 1.0 compatibility that is set in the given static context.
+    *
+    * \param context The XQC_StaticContext that this function pointer is a member of
+    * \param[out] mode The xpath1_0compatib_mode_t that is set in the given context.
+    *
+    * \retval ::XQC_NO_ERROR
+    * \retval ::XQC_INTERNAL_ERROR
+    *)
+    get_xpath1_0_mode: function(context: XQC_StaticContext; out mode: xpath1_0compatib_mode_t): XQUERY_ERROR; extdecl;
+
+
+   (**
+    * Sets the construction mode to either preserve_cons or strip_cons.
+    *
+    * \param context The XQC_StaticContext that this function pointer is a member of
+    * \param mode The construction_mode_t to set in the given context.
+    *
+    * \retval ::XQC_NO_ERROR
+    * \retval ::XQC_INTERNAL_ERROR
+    *)
+    set_construction_mode: function(context: XQC_StaticContext; mode: construction_mode_t): XQUERY_ERROR; extdecl;
+
+
+   (**
+    * Returns the construction mode that is set in the given static context.
+    *
+    * \param context The XQC_StaticContext that this function pointer is a member of
+    * \param[out] mode The construction_mode_t that is set in the given context.
+    *
+    * \retval ::XQC_NO_ERROR
+    * \retval ::XQC_INTERNAL_ERROR
+    *)
+    get_construction_mode: function(context: XQC_StaticContext; out mode: construction_mode_t): XQUERY_ERROR; extdecl;
+
+
+   (**
+    * Sets the ordering mode to either order or unordered.
+    *
+    * \param context The XQC_StaticContext that this function pointer is a member of
+    * \param mode The ordering_mode_t to set in the given context.
+    *
+    * \retval ::XQC_NO_ERROR
+    * \retval ::XQC_INTERNAL_ERROR
+    *)
+    set_ordering_mode: function(context: XQC_StaticContext; mode: ordering_mode_t): XQUERY_ERROR; extdecl;
+
+
+   (**
+    * Returns the ordering mode that is set in the given static context.
+    *
+    * \param context The XQC_StaticContext that this function pointer is a member of
+    * \param[out] mode The ordering_mode_t that is set in the given context.
+    *
+    * \retval ::XQC_NO_ERROR
+    * \retval ::XQC_INTERNAL_ERROR
+    *)
+    get_ordering_mode: function(context: XQC_StaticContext; out mode: ordering_mode_t): XQUERY_ERROR; extdecl;
+
+
+   (**
+    * Sets the default order mode for empty sequences to either empty_least or
+    * empty_greatest
+    *
+    * \param context The XQC_StaticContext that this function pointer is a member of
+    * \param mode The order_empty_mode_t to set in the given context.
+    *
+    * \retval ::XQC_NO_ERROR
+    * \retval ::XQC_INTERNAL_ERROR
+    *)
+    set_default_order_empty_sequences: function(context: XQC_StaticContext; mode: order_empty_mode_t): XQUERY_ERROR; extdecl;
+
+
+   (**
+    * Returns the default order mode for empty sequences that is set in the given
+    * static context.
+    *
+    * \param context The XQC_StaticContext that this function pointer is a member of
+    * \param[out] mode The order_empty_mode_t that is set in the given context.
+    *
+    * \retval ::XQC_NO_ERROR
+    * \retval ::XQC_INTERNAL_ERROR
+    *)
+    get_default_order_empty_sequences: function(context: XQC_StaticContext; out mode: order_empty_mode_t): XQUERY_ERROR; extdecl;
+
+
+   (**
+    * Sets the boundary space policy to either preserve_space or strip_space.
+    *
+    * \param context The XQC_StaticContext that this function pointer is a member of
+    * \param mode The boundary_space_mode_t to set in the given context.
+    *
+    * \retval ::XQC_NO_ERROR
+    * \retval ::XQC_INTERNAL_ERROR
+    *)
+    set_boundary_space_policy: function(context: XQC_StaticContext; mode: boundary_space_mode_t): XQUERY_ERROR; extdecl;
+
+
+   (**
+    * Returns the boundary space policy that is set in the given static context.
+    *
+    * \param context The XQC_StaticContext that this function pointer is a member of
+    * \param[out] mode The boundary_space_mode_t that is set in the given context.
+    *
+    * \retval ::XQC_NO_ERROR
+    * \retval ::XQC_INTERNAL_ERROR
+    *)
+    get_boundary_space_policy: function(context: XQC_StaticContext; out mode: boundary_space_mode_t): XQUERY_ERROR; extdecl;
+
+
+   (**
+    * Sets the copy namespace mode which consists of the preserve and the inherit mode.
+    *
+    * \param context The XQC_StaticContext that this function pointer is a member of
+    * \param preserve The preserve_mode_t to set in the given context.
+    * \param inherit The inherit_mode_t to set in the given context.
+    *
+    * \retval ::XQC_NO_ERROR
+    * \retval ::XQC_INTERNAL_ERROR
+    *)
+    set_copy_ns_mode: function(context: XQC_StaticContext; mode: preserve_mode_t; inherit: inherit_mode_t): XQUERY_ERROR; extdecl;
+
+
+   (**
+    * Returns the copy namespace mode as a pair consisting of the preserve and the inherit
+    * mode.
+    *
+    * \param context The XQC_StaticContext that this function pointer is a member of
+    * \param[out] preserve The preserve_mode_t that is set in the given context.
+    * \param[out] inherit The inherit_mode_t that is set in the given context.
+    *
+    * \retval ::XQC_NO_ERROR
+    * \retval ::XQC_INTERNAL_ERROR
+    *)
+    get_copy_ns_mode: function(context: XQC_StaticContext; out mode: preserve_mode_t; out inherit: inherit_mode_t): XQUERY_ERROR; extdecl;
+
+
+   (**
+    * Sets the base uri in the given static context.
+    *
+    * \param context The XQC_StaticContext that this function pointer is a member of
+    * \param base_uri The base uri to set in the given context.
+    *
+    * \retval ::XQC_NO_ERROR
+    * \retval ::XQC_INTERNAL_ERROR
+    *)
+    set_base_uri: function(context: XQC_StaticContext; const base_uri: pchar): XQUERY_ERROR; extdecl;
+
+
+   (**
+    * Returns the base uri that is set in the given static context.
+    * The returned base uri is only valid as long as the corresponding static context
+    * is valid.
+    *
+    * \param context The XQC_StaticContext that this function pointer is a member of
+    * \param[out] base_uri The base uri that is set in the given context.
+    *
+    * \retval ::XQC_NO_ERROR
+    * \retval ::XQC_INTERNAL_ERROR
+    *)
+    get_base_uri: function(context: XQC_StaticContext; out base_uri: pchar): XQUERY_ERROR; extdecl;
+
+
+    (**
+     * Register an external function that can be called within a query.
+     * One external function consists of three function parameters, i.e. init, next, and release.
+     *
+     * \param context The XQC_StaticContext that this function pointer is a member of
+     * \param uri The URI of the external function to add.
+     * \param localname The localname of the function to add.
+     * \param init A callback function pointer that is called once when the external function
+     *             is initialized. The init function gets the global_user_data pointer
+     *             as parameter.
+     * \param next A callback function pointer that is called each time the corresponding
+     *             XQuery function is executed.
+     * \param release A callback function pointer that is called once when the external function
+     *                is deinitialized.
+     * \param global_user_data User specific data that is passed to the init function as a parameter.
+     *
+     * \retval ::XQC_NO_ERROR
+     * \retval ::API0019_FUNCTION_ALREADY_REGISTERED,
+     * \retval ::XQC_INTERNAL_ERROR
+     *)
+    register_external_function: function(context: XQC_StaticContext; const uri, localname: pchar; init: external_function_init;
+      next: external_function_next; release: external_function_release; global_user_data: pointer): XQUERY_ERROR; extdecl;
+
+
+   (**
+    * Called to free the resources associated with the XQC_StaticContext.
+    *
+    * \param context The XQC_StaticContext that this function pointer is a member of
+    *)
+    free: procedure(context: XQC_StaticContext); extdecl;
+
+
+    (**
+     * for internal use only
+     *)
+    data: Pointer;
+  end;
+
+
+(**
+ * An object of the type ::XQC_DynamicContext contains the information that is available at the
+ * time the query is executed.  It contains the information that is defined in the %XQuery
+ * specification (see http://www.w3.org/TR/xquery/#eval_context).
+ * An instance of this struct can be retrieved by calling the <code>get_dynamic_context</code> function
+ * of an ::XQC_Query object.
+ *)
+  XQC_DynamicContext_s = record
+    (**
+     * Sets the context item to the given ::XQC_Item.
+     *
+     * \param context The XQC_DynamicContext that this function pointer is a member of
+     * \param value The XQC_Item for the context item.
+     *
+     * \retval ::XQC_NO_ERROR
+     * \retval ::XQC_INTERNAL_ERROR
+     *)
+    set_context_item: function(context: XQC_DynamicContext; value: XQC_Item): XQUERY_ERROR; extdecl;
+
+
+    (**
+     * Sets the context item to the document given by the FILE pointer.
+     * The provided document is accessible by the provided doc_uri.
+     *
+     * \param context The XQC_DynamicContext that this function pointer is a member of
+     * \param doc_uri The URI referencing the given document
+     * \param document The document to which the context item should be set as a FILE pointer.
+     *
+     * \retval ::XQC_NO_ERROR
+     * \retval ::XQP0016_LOADER_IO_ERROR,
+     * \retval ::XQP0017_LOADER_PARSING_ERROR,
+     * \retval ::XQC_INTERNAL_ERROR
+     *)
+    set_context_document: function(context: XQC_DynamicContext; const doc_uri: pchar; document: pfile): XQUERY_ERROR; extdecl;
+
+
+    (**
+     * Sets the external variable to the value given.
+     *
+     * \param context The XQC_DynamicContext that this function pointer is a member of
+     * \param qname The qname of the external variable to set
+     * \param value The XQC_Item value for the variable.
+     *
+     * \retval ::XQC_NO_ERROR
+     * \retval ::XQC_INTERNAL_ERROR
+     *)
+    set_variable_item: function(context: XQC_DynamicContext; const qname: pchar; value: XQC_Item): XQUERY_ERROR; extdecl;
+
+
+    (**
+     * Sets the external variable to the sequence given.
+     *
+     * \param context The XQC_DynamicContext that this function pointer is a member of
+     * \param qname The qname of the external variable to set
+     * \param value The XQC_Sequence value for the variable.
+     *
+     * \retval ::XQC_NO_ERROR
+     * \retval ::XQC_INTERNAL_ERROR
+     *)
+    set_variable_sequence: function(context: XQC_DynamicContext; const qname: pchar; value: XQC_Sequence): XQUERY_ERROR; extdecl;
+
+
+    (**
+     * Sets the external variable to the document given by the FILE pointer.
+     *
+     * \param context The XQC_DynamicContext that this function pointer is a member of
+     * \param var_qname The qname of the external variable to set
+     * \param doc_uri The URI referencing the given document
+     * \param document The document to which the context item should be set as a FILE pointer.
+     *
+     * \retval ::XQC_NO_ERROR
+     * \retval ::XQP0016_LOADER_IO_ERROR,
+     * \retval ::XQP0017_LOADER_PARSING_ERROR,
+     * \retval ::XQC_INTERNAL_ERROR
+     *)
+    set_variable_document: function(context: XQC_DynamicContext; const var_qname, doc_uri: pchar; document: pfile): XQUERY_ERROR; extdecl;
+
+
+    (**
+     * Sets the implicit timezone parameter.
+     *
+     * \param context The XQC_DynamicContext that this function pointer is a member of
+     * \param timezone The implicit timezone to set
+     *
+     * \retval ::XQC_NO_ERROR
+     * \retval ::XQC_INTERNAL_ERROR
+     *)
+    set_implicit_timezone: function(context: XQC_DynamicContext; timezone: cint): XQUERY_ERROR; extdecl;
+
+
+    (**
+     * Defines the value of the default collection that is used when calling the
+     * fn:collection function without a parameter.
+     *
+     * \param context The XQC_DynamicContext that this function pointer is a member of
+     * \param collection_uri the URI of the collection used by the fn:collection function.
+     * \retval ::XQC_NO_ERROR
+     * \retval ::XQC_INTERNAL_ERROR
+     *)
+    set_default_collection: function(context: XQC_DynamicContext; collection_uri: XQC_Item): XQUERY_ERROR; extdecl;
+
+
+    (**
+     * Called to free the resources associated with the XQC_DynamicContext.
+     *
+     * \param context The XQC_DynamicContext that this function pointer is a member of
+     *)
+    free: procedure(context: XQC_DynamicContext); extdecl;
+
+
+    (**
+     * for internal use only
+     *)
+    data: pointer;
+  end;
+
+
+(**
+ * This struct is Zorba's representation of an Item as defined in the
+ * XQuery 1.0 and XPath 2.0 Data Model (XDM); see http://www.w3.org/TR/xpath-datamodel/.
+ *
+ * Instances of the XDM are a sequence, i.e. an ordered collection of zero or more items.
+ * In the Zorba API, a sequence is represented by the XQC_Sequence struct.
+ *
+ * The Item class is the union of all XQuery node and atomic types.
+ * The class provides functions to access the information of an Item. Note that not
+ * all functions are defined on every Item kind. If a function is called on an Item that
+ * does not provide the function called, an XQP0024_FUNCTION_NOT_IMPLEMENTED_FOR_ITEMTYPE error
+ * is raised.
+ *
+ * A new atomic Item can be created using the ItemFactory. A new node Item should be created
+ * by the result of a query.
+ *)
+  XQC_Item_s = record
+    (**
+     * The string value is the string that is extracted by calling the fn:string function
+     * on the Item (see http://www.w3.org/TR/xpath-functions/#func-string).
+     * Note that this function is available for all types of Items.
+     *
+     * \param item The XQC_Item that this function pointer is a member of
+     * \param[out] string_value The string-value of the given item.
+     *             This string is valid as long as the given item is valid.
+     *
+     * \retval ::XQC_NO_ERROR
+     * \retval ::XQP0019_INTERNAL_ERROR
+     * \retval ::XQP0024_FUNCTION_NOT_IMPLEMENTED_FOR_ITEMTYPE
+     *)
+    string_value: function(item: XQC_Item; out string_value: pchar): XQUERY_ERROR; extdecl;
+
+
+    (**
+     * Get the (optional) value of a QName's prefix.
+     * Note that this function is only available for Items of type QName.
+     *
+     * \param item The XQC_Item that this function pointer is a member of
+     * \param[out] prefix The prefix of the given QName item.
+     *             This string is valid as long as the given item is valid.
+     *
+     * \retval ::XQC_NO_ERROR
+     * \retval ::XQP0019_INTERNAL_ERROR
+     * \retval ::XQP0024_FUNCTION_NOT_IMPLEMENTED_FOR_ITEMTYPE
+     *)
+    prefix: function(item: XQC_Item; out prefix: pchar): XQUERY_ERROR; extdecl;
+
+
+    (**
+     * Get the (optional) value of a QName's namespace.
+     * Note that this function is only available for Items of type QName.
+     *
+     * \param item The XQC_Item that this function pointer is a member of
+     * \param[out] namespace The namespace of the given QName item.
+     *             This string is valid as long as the given item is valid.
+     *
+     * \retval ::XQC_NO_ERROR
+     * \retval ::XQP0019_INTERNAL_ERROR
+     * \retval ::XQP0024_FUNCTION_NOT_IMPLEMENTED_FOR_ITEMTYPE
+     *)
+    ns: function(item: XQC_Item; out ns: pchar): XQUERY_ERROR; extdecl;
+
+
+    (**
+     * Get the value of a QName's localname.
+     * Note that this function is only available for Items of type QName.
+     *
+     * \param item The XQC_Item that this function pointer is a member of
+     * \param[out] localname The localname of the given QName item.
+     *             This string is valid as long as the given item is valid.
+     *
+     * \retval ::XQC_NO_ERROR
+     * \retval ::XQP0019_INTERNAL_ERROR
+     * \retval ::XQP0024_FUNCTION_NOT_IMPLEMENTED_FOR_ITEMTYPE
+     *)
+    localname: function(item: XQC_Item; out local_name: pchar): XQUERY_ERROR; extdecl;
+
+
+    (**
+     * Get the bool value of the boolean Item.
+     * Note that this function is only available for Items of type boolean.
+     *
+     * \param item The XQC_Item that this function pointer is a member of
+     * \param[out] bool_value 1 if the boolean value of the given item is true, 0 otherwise.
+     *
+     * \retval ::XQC_NO_ERROR
+     * \retval ::XQP0019_INTERNAL_ERROR
+     * \retval ::XQP0024_FUNCTION_NOT_IMPLEMENTED_FOR_ITEMTYPE
+     *)
+    boolean_value: function(item: XQC_Item; out bool_value: cint): XQUERY_ERROR; extdecl;
+
+
+    (**
+     * Check if the value of the Item is not a number (NaN).
+     * Note that this function is implemented for all item types but may only return
+     * 1 for a numeric item (e.g. Double or Float).
+     *
+     * \param item The XQC_Item that this function pointer is a member of
+     * \param[out] is_nan 1 if the given item is not a number, 0 otherwise.
+     *
+     * \retval ::XQC_NO_ERROR
+     * \retval ::XQP0019_INTERNAL_ERROR
+     * \retval ::XQP0024_FUNCTION_NOT_IMPLEMENTED_FOR_ITEMTYPE
+     *)
+    nan: function(item: XQC_Item; out is_nan: cint): XQUERY_ERROR; extdecl;
+
+
+    (**
+      Check if the value of the Item is positive or negative infinity.
+     * Note that this function is only available for numeric items (e.g. Double or Float).
+     *
+     * \param item The XQC_Item that this function pointer is a member of
+     * \param[out] inf 1 if the given item is +/-INF, 0 otherwise.
+     *
+     * \retval ::XQC_NO_ERROR
+     * \retval ::XQP0019_INTERNAL_ERROR
+     * \retval ::XQP0024_FUNCTION_NOT_IMPLEMENTED_FOR_ITEMTYPE
+     *)
+    pos_or_neg_inf: function(item: XQC_Item; out pos_or_neg_inf: cint): XQUERY_ERROR; extdecl;
+
+
+    (**
+     * Called to free the resources associated with the XQC_Item.
+     *
+     * \param item The XQC_Item that this function pointer is a member of
+     *)
+    free: procedure(item: XQC_Item); extdecl;
+
+
+    (**
+     * for internal use only
+     *)
+    data: pointer;
+  end;
+
+
+(**
+ * An instance of this class can be obtained by calling <code>item_factory</code> function
+ * of an ::XQC_Implementation object.
+ *
+ * Each <code>create_XXX</code> function of this struct creates an ::XQC_Item of an XML Schema item.
+ * Each of the functions takes either NULL or a valid XQC_Item wrapper. The latter is created
+ * by calling <code>XQC_Implementation::create_item</code>. In both cases, the user is responsible
+ * for freeing the object by calling the XQC_Item::free() function.
+ *)
+  XQC_ItemFactory_s = record
+    (**
+     * Creates a String Item see [http://www.w3.org/TR/xmlschema-2/#string].
+     *
+     * \param factory The XQC_ItemFactory that this function pointer is a member of
+     * \param str The string as a char pointer.
+     * \param[out] item The item to create. This can either be a wrapper created using
+     *                 ::XQC_ItemFactory::create_item or a pointer initialized to 0.
+     *
+     * \retval ::XQC_NO_ERROR
+     * \retval ::XQP0019_INTERNAL_ERROR
+     * \retval ::XQP0025_COULD_NOT_CREATE_ITEM
+     *)
+    create_string: function(factory: XQC_ItemFactory; const str: pchar; out item: XQC_Item): XQUERY_ERROR; extdecl;
+
+
+    (**
+     * Creates an AnyURI Item see [http://www.w3.org/TR/xmlschema-2/#anyURI]
+     *
+     * \param factory The XQC_ItemFactory that this function pointer is a member of
+     * \param str The uri as a char pointer.
+     * \param[out] item The item to create. This can either be a wrapper created using
+     *                 ::XQC_ItemFactory::create_item or a pointer initialized to 0.
+     *
+     * \retval ::XQC_NO_ERROR
+     * \retval ::XQP0019_INTERNAL_ERROR
+     * \retval ::XQP0025_COULD_NOT_CREATE_ITEM
+     *)
+    create_anyuri: function(factory: XQC_ItemFactory; const str: pchar; out item: XQC_Item): XQUERY_ERROR; extdecl;
+
+
+    (**
+     * Creates a QName Item see [http://www.w3.org/TR/xmlschema-2/#QName]
+     *
+     * \param factory The XQC_ItemFactory that this function pointer is a member of
+     * \param str The uri as a char pointer.
+     * \param localname The localname as a char pointer.
+     * \param[out] item The item to create. This can either be a wrapper created using
+     *                 ::XQC_ItemFactory::create_item or a pointer initialized to 0.
+     *
+     * \retval ::XQC_NO_ERROR
+     * \retval ::XQP0019_INTERNAL_ERROR
+     * \retval ::XQP0025_COULD_NOT_CREATE_ITEM
+     *)
+    create_qname2: function(factory: XQC_ItemFactory; const uri, localname: pchar; out item: XQC_Item): XQUERY_ERROR; extdecl;
+
+
+    (**
+     * Creates a QName Item see [http://www.w3.org/TR/xmlschema-2/#QName]
+     *
+     * \param factory The XQC_ItemFactory that this function pointer is a member of
+     * \param str The uri as a char pointer.
+     * \param prefix The prefix as a char pointer.
+     * \param localname The localname as a char pointer.
+     * \param[out] item The item to create. This can either be a wrapper created using
+     *                 ::XQC_ItemFactory::create_item or a pointer initialized to 0.
+     *
+     * \retval ::XQC_NO_ERROR
+     * \retval ::XQP0019_INTERNAL_ERROR
+     * \retval ::XQP0025_COULD_NOT_CREATE_ITEM
+     *)
+    create_qname3: function(factory: XQC_ItemFactory; const uri, prefix, localname: pchar; out item: XQC_Item): XQUERY_ERROR; extdecl;
+
+
+    (**
+     * Creates a Boolean Item see [http://www.w3.org/TR/xmlschema-2/#bool]
+     *
+     * \param factory The XQC_ItemFactory that this function pointer is a member of
+     * \param boolean 0 for a boolean <code>false</code> boolean item, 1 otherwise.
+     * \param[out] item The item to create. This can either be a wrapper created using
+     *                 ::XQC_ItemFactory::create_item or a pointer initialized to 0.
+     *
+     * \retval ::XQC_NO_ERROR
+     * \retval ::XQP0019_INTERNAL_ERROR
+     * \retval ::XQP0025_COULD_NOT_CREATE_ITEM
+     *)
+    create_boolean: function(factory: XQC_ItemFactory; boolean: cint; out item: XQC_Item): XQUERY_ERROR; extdecl;
+
+
+    (**
+     * Creates a NCName Item see [http://www.w3.org/TR/xmlschema-2/#NCName]
+     *
+     * \param factory The XQC_ItemFactory that this function pointer is a member of
+     * \param ncname The NCName as a char pointer.
+     * \param[out] item The item to create. This can either be a wrapper created using
+     *                 ::XQC_ItemFactory::create_item or a pointer initialized to 0.
+     *
+     * \retval ::XQC_NO_ERROR
+     * \retval ::XQP0019_INTERNAL_ERROR
+     * \retval ::XQP0025_COULD_NOT_CREATE_ITEM
+     *)
+    create_ncname: function(factory: XQC_ItemFactory; const ncname: pchar; out item: XQC_Item): XQUERY_ERROR; extdecl;
+
+
+    (**
+     * Creates a Base64Binary Item see [http://www.w3.org/TR/xmlschema-2/#base64Binary]
+     *
+     * \param factory The XQC_ItemFactory that this function pointer is a member of
+     * \param binary_data The binary data as a char pointer.
+     * \param letter The length of the binary data.
+     * \param[out] item The item to create. This can either be a wrapper created using
+     *                 ::XQC_ItemFactory::create_item or a pointer initialized to 0.
+     *
+     * \retval ::XQC_NO_ERROR
+     * \retval ::XQP0019_INTERNAL_ERROR
+     * \retval ::XQP0025_COULD_NOT_CREATE_ITEM
+     *)
+    create_base64binary: function(factory: XQC_ItemFactory; const binary_data: pchar; length: csize_t; out item: XQC_Item): XQUERY_ERROR; extdecl;
+
+
+    (**
+     * Creates a Decimal Item see [http://www.w3.org/TR/xmlschema-2/#decimal]
+     *
+     * \param factory The XQC_ItemFactory that this function pointer is a member of
+     * \param value The value as a doule
+     * \param[out] item The item to create. This can either be a wrapper created using
+     *                 ::XQC_ItemFactory::create_item or a pointer initialized to 0.
+     *
+     * \retval ::XQC_NO_ERROR
+     * \retval ::XQP0019_INTERNAL_ERROR
+     * \retval ::XQP0025_COULD_NOT_CREATE_ITEM
+     *)
+    create_decimal: function(factory: XQC_ItemFactory; value: cdouble; out item: XQC_Item): XQUERY_ERROR; extdecl;
+
+
+    (**
+     * Creates a Decimal Item see [http://www.w3.org/TR/xmlschema-2/#decimal]
+     *
+     * \param factory The XQC_ItemFactory that this function pointer is a member of
+     * \param value The value as a char pointer.
+     * \param[out] item The item to create. This can either be a wrapper created using
+     *                 ::XQC_ItemFactory::create_item or a pointer initialized to 0.
+     *
+     * \retval ::XQC_NO_ERROR
+     * \retval ::XQP0019_INTERNAL_ERROR
+     * \retval ::XQP0025_COULD_NOT_CREATE_ITEM
+     *)
+    create_decimal_char: function(factory: XQC_ItemFactory; const value: pchar; out item: XQC_Item): XQUERY_ERROR; extdecl;
+
+
+    (**
+     * Creates an Integer Item see [http://www.w3.org/TR/xmlschema-2/#integer]
+     *
+     * \param factory The XQC_ItemFactory that this function pointer is a member of
+     * \param integer_value The value as a long long.
+     * \param[out] item The item to create. This can either be a wrapper created using
+     *                 ::XQC_ItemFactory::create_item or a pointer initialized to 0.
+     *
+     * \retval ::XQC_NO_ERROR
+     * \retval ::XQP0019_INTERNAL_ERROR
+     * \retval ::XQP0025_COULD_NOT_CREATE_ITEM
+     *)
+    create_integer: function(factory: XQC_ItemFactory; const integer_value: clonglong; out item: XQC_Item): XQUERY_ERROR; extdecl;
+
+
+    (**
+     * Creates an Integer Item see [http://www.w3.org/TR/xmlschema-2/#integer]
+     *
+     * \param factory The XQC_ItemFactory that this function pointer is a member of
+     * \param integer_value The value as a char pointer.
+     * \param[out] item The item to create. This can either be a wrapper created using
+     *                 ::XQC_ItemFactory::create_item or a pointer initialized to 0.
+     *
+     * \retval ::XQC_NO_ERROR
+     * \retval ::XQP0019_INTERNAL_ERROR
+     * \retval ::XQP0025_COULD_NOT_CREATE_ITEM
+     *)
+    create_integer_char: function(factory: XQC_ItemFactory; const integer_value: pchar; out item: XQC_Item): XQUERY_ERROR; extdecl;
+
+
+    (**
+     * Creates a Long Item see [http://www.w3.org/TR/xmlschema-2/#long]
+     *
+     * \param factory The XQC_ItemFactory that this function pointer is a member of
+     * \param long_value The value as a long long.
+     * \param[out] item The item to create. This can either be a wrapper created using
+     *                 ::XQC_ItemFactory::create_item or a pointer initialized to 0.
+     *
+     * \retval ::XQC_NO_ERROR
+     * \retval ::XQP0019_INTERNAL_ERROR
+     * \retval ::XQP0025_COULD_NOT_CREATE_ITEM
+     *)
+    create_long: function(factory: XQC_ItemFactory; const long_value: clonglong; out item: XQC_Item): XQUERY_ERROR; extdecl;
+
+
+    (**
+     * Creates a Int Item see [http://www.w3.org/TR/xmlschema-2/#int]
+     *
+     * \param factory The XQC_ItemFactory that this function pointer is a member of
+     * \param int_value The value as an int.
+     * \param[out] item The item to create. This can either be a wrapper created using
+     *                 ::XQC_ItemFactory::create_item or a pointer initialized to 0.
+     *
+     * \retval ::XQC_NO_ERROR
+     * \retval ::XQP0019_INTERNAL_ERROR
+     * \retval ::XQP0025_COULD_NOT_CREATE_ITEM
+     *)
+    create_int: function(factory: XQC_ItemFactory; const int_value: cint; out item: XQC_Item): XQUERY_ERROR; extdecl;
+
+
+    (**
+     * Creates a Short Item see [http://www.w3.org/TR/xmlschema-2/#short]
+     *
+     * \param factory The XQC_ItemFactory that this function pointer is a member of
+     * \param short_value The value as a short.
+     * \param[out] item The item to create. This can either be a wrapper created using
+     *                 ::XQC_ItemFactory::create_item or a pointer initialized to 0.
+     *
+     * \retval ::XQC_NO_ERROR
+     * \retval ::XQP0019_INTERNAL_ERROR
+     * \retval ::XQP0025_COULD_NOT_CREATE_ITEM
+     *)
+    create_short: function(factory: XQC_ItemFactory; const short_value: cshort; out item: XQC_Item): XQUERY_ERROR; extdecl;
+
+
+    (**
+     * Creates a Byte Item see [http://www.w3.org/TR/xmlschema-2/#byte]
+     *
+     * \param factory The XQC_ItemFactory that this function pointer is a member of
+     * \param byte_value The byte value as a char.
+     * \param[out] item The item to create. This can either be a wrapper created using
+     *                 ::XQC_ItemFactory::create_item or a pointer initialized to 0.
+     *
+     * \retval ::XQC_NO_ERROR
+     * \retval ::XQP0019_INTERNAL_ERROR
+     * \retval ::XQP0025_COULD_NOT_CREATE_ITEM
+     *)
+    create_byte: function(factory: XQC_ItemFactory; const byte_value: cchar; out item: XQC_Item): XQUERY_ERROR; extdecl;
+
+
+    (**
+     * Creates a Date Item see [http://www.w3.org/TR/xmlschema-2/#date]
+     *
+     * \param factory The XQC_ItemFactory that this function pointer is a member of
+     * \param date_value The date value as a char pointer.
+     * \param[out] item The item to create. This can either be a wrapper created using
+     *                 ::XQC_ItemFactory::create_item or a pointer initialized to 0.
+     *
+     * \retval ::XQC_NO_ERROR
+     * \retval ::XQP0019_INTERNAL_ERROR
+     * \retval ::XQP0025_COULD_NOT_CREATE_ITEM
+     *)
+    create_date_char: function(factory: XQC_ItemFactory; const date_value: pchar; out item: XQC_Item): XQUERY_ERROR; extdecl;
+
+
+    (**
+     * Creates a Date Item see [http://www.w3.org/TR/xmlschema-2/#date]
+     *
+     * \param factory The XQC_ItemFactory that this function pointer is a member of
+     * \param year The year value as a short.
+     * \param month The month value as a short.
+     * \param day The day value as a short.
+     * \param[out] item The item to create. This can either be a wrapper created using
+     *                 ::XQC_ItemFactory::create_item or a pointer initialized to 0.
+     *
+     * \retval ::XQC_NO_ERROR
+     * \retval ::XQP0019_INTERNAL_ERROR
+     * \retval ::XQP0025_COULD_NOT_CREATE_ITEM
+     *)
+    create_date: function(factory: XQC_ItemFactory; const year, month, day: cshort; out item: XQC_Item): XQUERY_ERROR; extdecl;
+
+
+    (**
+     * Creates a DateTime Item see [http://www.w3.org/TR/xmlschema-2/#dateTime]
+     *
+     * \param factory The XQC_ItemFactory that this function pointer is a member of
+     * \param year The year value as a short.
+     * \param month The month value as a short.
+     * \param day The day value as a short.
+     * \param hour The hour value as a short.
+     * \param minute The minute value as a short.
+     * \param seconds The seconds value as a short.
+     * \param timezone_hours The timezone as a short.
+     * \param[out] item The item to create. This can either be a wrapper created using
+     *                 ::XQC_ItemFactory::create_item or a pointer initialized to 0.
+     *
+     * \retval ::XQC_NO_ERROR
+     * \retval ::XQP0019_INTERNAL_ERROR
+     * \retval ::XQP0025_COULD_NOT_CREATE_ITEM
+     *)
+    create_datetime: function(factory: XQC_ItemFactory; const year, month, day, hour, minute: cshort;
+      seconds: cdouble; timezone_hours: cshort; out item: XQC_Item): XQUERY_ERROR; extdecl;
+
+
+    (**
+     * Creates a DateTime Item see [http://www.w3.org/TR/xmlschema-2/#dateTime]
+     *
+     * \param factory The XQC_ItemFactory that this function pointer is a member of
+     * \param datetime_value The string representation of the datetime value as a char pointer
+     *                       (for example, 2002-10-10T12:00:00-05:00).
+     * \param[out] item The item to create. This can either be a wrapper created using
+     *                 ::XQC_ItemFactory::create_item or a pointer initialized to 0.
+     *
+     * \retval ::XQC_NO_ERROR
+     * \retval ::XQP0019_INTERNAL_ERROR
+     * \retval ::XQP0025_COULD_NOT_CREATE_ITEM
+     *)
+    create_datetime_char: function(factory: XQC_ItemFactory; const datetime_value: pchar; out item: XQC_Item): XQUERY_ERROR; extdecl;
+
+
+    (**
+     * Creates a Double Item see [http://www.w3.org/TR/xmlschema-2/#double]
+     *
+     * \param factory The XQC_ItemFactory that this function pointer is a member of
+     * \param[out] item The item to create. This can either be a wrapper created using
+     *                 ::XQC_ItemFactory::create_item or a pointer initialized to 0.
+     *
+     * \retval ::XQC_NO_ERROR
+     * \retval ::XQP0019_INTERNAL_ERROR
+     * \retval ::XQP0025_COULD_NOT_CREATE_ITEM
+     *)
+    create_double: function(factory: XQC_ItemFactory; const value: cdouble; out item: XQC_Item): XQUERY_ERROR; extdecl;
+
+
+    (**
+     * Creates a Double Item see [http://www.w3.org/TR/xmlschema-2/#double]
+     *
+     * \param factory The XQC_ItemFactory that this function pointer is a member of
+     * \param value The value as a char pointer.
+     * \param[out] item The item to create. This can either be a wrapper created using
+     *                 ::XQC_ItemFactory::create_item or a pointer initialized to 0.
+     *
+     * \retval ::XQC_NO_ERROR
+     * \retval ::XQP0019_INTERNAL_ERROR
+     * \retval ::XQP0025_COULD_NOT_CREATE_ITEM
+     *)
+    create_double_char: function(factory: XQC_ItemFactory; const value: pchar; out item: XQC_Item): XQUERY_ERROR; extdecl;
+
+
+    (**
+     * Creates a Duration Item see [http://www.w3.org/TR/xmlschema-2/#duration]
+     *
+     * \param factory The XQC_ItemFactory that this function pointer is a member of
+     * \param year The year value as a short.
+     * \param month The month value as a short.
+     * \param day The day value as a short.
+     * \param hour The hour value as a short.
+     * \param minute The minute value as a short.
+     * \param seconds The seconds value as a short.
+     * \param[out] item The item to create. This can either be a wrapper created using
+     *                 ::XQC_ItemFactory::create_item or a pointer initialized to 0.
+     *
+     * \retval ::XQC_NO_ERROR
+     * \retval ::XQP0019_INTERNAL_ERROR
+     * \retval ::XQP0025_COULD_NOT_CREATE_ITEM
+     *)
+    create_duration: function(factory: XQC_ItemFactory; const year, month, day, hour, minute: cshort;
+      seconds: cdouble; out item: XQC_Item): XQUERY_ERROR; extdecl;
+
+
+    (**
+     * Creates a Float Item see [http://www.w3.org/tr/xmlschema-2/#float]
+     *
+     * \param factory The XQC_ItemFactory that this function pointer is a member of
+     * \param value The float value as a char pointer.
+     * \param[out] item The item to create. This can either be a wrapper created using
+     *                 ::XQC_ItemFactory::create_item or a pointer initialized to 0.
+     *
+     * \retval ::XQC_NO_ERROR
+     * \retval ::XQP0019_INTERNAL_ERROR
+     * \retval ::XQP0025_COULD_NOT_CREATE_ITEM
+     *)
+    create_float: function(factory: XQC_ItemFactory; const value: pchar; out item: XQC_Item): XQUERY_ERROR; extdecl;
+
+
+    (**
+     * Creates a gDay Item see [http://www.w3.org/TR/xmlschema-2/#gDay]
+     *
+     * \param factory The XQC_ItemFactory that this function pointer is a member of
+     * \param day The day value as a short.
+     * \param[out] item The item to create. This can either be a wrapper created using
+     *                 ::XQC_ItemFactory::create_item or a pointer initialized to 0.
+     *
+     * \retval ::XQC_NO_ERROR
+     * \retval ::XQP0019_INTERNAL_ERROR
+     * \retval ::XQP0025_COULD_NOT_CREATE_ITEM
+     *)
+    create_gday: function(factory: XQC_ItemFactory; day: cshort; out item: XQC_Item): XQUERY_ERROR; extdecl;
+
+
+    (**
+     * Creates a gMonth Item see [http://www.w3.org/TR/xmlschema-2/#gMonth]
+     *
+     * \param factory The XQC_ItemFactory that this function pointer is a member of
+     * \param month The month value as a short.
+     * \param[out] item The item to create. This can either be a wrapper created using
+     *                 ::XQC_ItemFactory::create_item or a pointer initialized to 0.
+     *
+     * \retval ::XQC_NO_ERROR
+     * \retval ::XQP0019_INTERNAL_ERROR
+     * \retval ::XQP0025_COULD_NOT_CREATE_ITEM
+     *)
+    create_gmonth: function(factory: XQC_ItemFactory; month: cshort; out item: XQC_Item): XQUERY_ERROR; extdecl;
+
+
+    (**
+     * Creates a gMonthDay Item see [http://www.w3.org/TR/xmlschema-2/#gMonthDay]
+     *
+     * \param factory The XQC_ItemFactory that this function pointer is a member of
+     * \param month The month value as a short.
+     * \param day The day value as a short.
+     * \param[out] item The item to create. This can either be a wrapper created using
+     *                 ::XQC_ItemFactory::create_item or a pointer initialized to 0.
+     *
+     * \retval ::XQC_NO_ERROR
+     * \retval ::XQP0019_INTERNAL_ERROR
+     * \retval ::XQP0025_COULD_NOT_CREATE_ITEM
+     *)
+    create_gmonthday: function(factory: XQC_ItemFactory; month, day: cshort; out item: XQC_Item): XQUERY_ERROR; extdecl;
+
+
+    (**
+     * Creates a gYear Item see [http://www.w3.org/TR/xmlschema-2/#gYear]
+     *
+     * \param factory The XQC_ItemFactory that this function pointer is a member of
+     * \param year The year value as a short.
+     * \param[out] item The item to create. This can either be a wrapper created using
+     *                 ::XQC_ItemFactory::create_item or a pointer initialized to 0.
+     *
+     * \retval ::XQC_NO_ERROR
+     * \retval ::XQP0019_INTERNAL_ERROR
+     * \retval ::XQP0025_COULD_NOT_CREATE_ITEM
+     *)
+    create_gyear: function(factory: XQC_ItemFactory; year: cshort; out item: XQC_Item): XQUERY_ERROR; extdecl;
+
+
+    (**
+     * Creates a gYearMonth Item see [http://www.w3.org/TR/xmlschema-2/#gYearMonth]
+     *
+     * \param factory The XQC_ItemFactory that this function pointer is a member of
+     * \param year The year value as a short.
+     * \param month The month value as a short.
+     * \param[out] item The item to create. This can either be a wrapper created using
+     *                 ::XQC_ItemFactory::create_item or a pointer initialized to 0.
+     *
+     * \retval ::XQC_NO_ERROR
+     * \retval ::XQP0019_INTERNAL_ERROR
+     * \retval ::XQP0025_COULD_NOT_CREATE_ITEM
+     *)
+    create_gyearmonth: function(factory: XQC_ItemFactory; year, month: cshort; out item: XQC_Item): XQUERY_ERROR; extdecl;
+
+
+    (**
+     * Creates a HexBinary Item see [http://www.w3.org/TR/xmlschema-2/#hexBinary]
+     *
+     * \param factory The XQC_ItemFactory that this function pointer is a member of
+     * \param hex_data The hex data as a char pointer.
+     * \param size The size of the hex data.
+     * \param[out] item The item to create. This can either be a wrapper created using
+     *                 ::XQC_ItemFactory::create_item or a pointer initialized to 0.
+     *
+     * \retval ::XQC_NO_ERROR
+     * \retval ::XQP0019_INTERNAL_ERROR
+     * \retval ::XQP0025_COULD_NOT_CREATE_ITEM
+     *)
+    create_hexbinary: function(factory: XQC_ItemFactory; const hex_data: pchar; size: csize_t; out item: XQC_Item): XQUERY_ERROR; extdecl;
+
+
+    (**
+     * Creates a negativeInteger Item see [http://www.w3.org/TR/xmlschema-2/#negativeInteger]
+     *
+     * \param factory The XQC_ItemFactory that this function pointer is a member of
+     * \param value The negative integer as a long long value.
+     * \param[out] item The item to create. This can either be a wrapper created using
+     *                 ::XQC_ItemFactory::create_item or a pointer initialized to 0.
+     *
+     * \retval ::XQC_NO_ERROR
+     * \retval ::XQP0019_INTERNAL_ERROR
+     * \retval ::XQP0025_COULD_NOT_CREATE_ITEM
+     *)
+    create_negativeinteger: function(factory: XQC_ItemFactory; value: clonglong; out item: XQC_Item): XQUERY_ERROR; extdecl;
+
+
+    (**
+     * Creates a nonNegativeInteger Item see [http://www.w3.org/TR/xmlschema-2/#nonNegativeInteger]
+     *
+     * \param factory The XQC_ItemFactory that this function pointer is a member of
+     * \param value The non-negative integer as an unsigned long long value.
+     * \param[out] item The item to create. This can either be a wrapper created using
+     *                 ::XQC_ItemFactory::create_item or a pointer initialized to 0.
+     *
+     * \retval ::XQC_NO_ERROR
+     * \retval ::XQP0019_INTERNAL_ERROR
+     * \retval ::XQP0025_COULD_NOT_CREATE_ITEM
+     *)
+    create_nonnegativeinteger: function(factory: XQC_ItemFactory; value: culonglong; out item: XQC_Item): XQUERY_ERROR; extdecl;
+
+
+    (**
+     * Creates a nonPositiveInteger Item see [http://www.w3.org/TR/xmlschema-2/#nonPositiveInteger]
+     *
+     * \param factory The XQC_ItemFactory that this function pointer is a member of
+     * \param value The non-positive integer as a long long value.
+     * \param[out] item The item to create. This can either be a wrapper created using
+     *                 ::XQC_ItemFactory::create_item or a pointer initialized to 0.
+     *
+     * \retval ::XQC_NO_ERROR
+     * \retval ::XQP0019_INTERNAL_ERROR
+     * \retval ::XQP0025_COULD_NOT_CREATE_ITEM
+     *)
+    create_nonpositiveinteger: function(factory: XQC_ItemFactory; value: clonglong; out item: XQC_Item): XQUERY_ERROR; extdecl;
+
+
+    (**
+     * Creates a positiveInteger Item see [http://www.w3.org/TR/xmlschema-2/#positiveInteger]
+     *
+     * \param factory The XQC_ItemFactory that this function pointer is a member of
+     * \param value The positive integer as an unsigned long long value.
+     * \param[out] item The item to create. This can either be a wrapper created using
+     *                 ::XQC_ItemFactory::create_item or a pointer initialized to 0.
+     *
+     * \retval ::XQC_NO_ERROR
+     * \retval ::XQP0019_INTERNAL_ERROR
+     * \retval ::XQP0025_COULD_NOT_CREATE_ITEM
+     *)
+    create_positiveinteger: function(factory: XQC_ItemFactory; value: culonglong; out item: XQC_Item): XQUERY_ERROR; extdecl;
+
+
+    (**
+     * Creates a Time Item see [http://www.w3.org/TR/xmlschema-2/#time]
+     *
+     * \param factory The XQC_ItemFactory that this function pointer is a member of
+     * \param value The time as a char pointer.
+     * \param[out] item The item to create. This can either be a wrapper created using
+     *                 ::XQC_ItemFactory::create_item or a pointer initialized to 0.
+     *
+     * \retval ::XQC_NO_ERROR
+     * \retval ::XQP0019_INTERNAL_ERROR
+     * \retval ::XQP0025_COULD_NOT_CREATE_ITEM
+     *)
+    create_time_char: function(factory: XQC_ItemFactory; const value: pchar; out item: XQC_Item): XQUERY_ERROR; extdecl;
+
+
+    (**
+     * Creates a Time Item see [http://www.w3.org/TR/xmlschema-2/#time]
+     *
+     * \param factory The XQC_ItemFactory that this function pointer is a member of
+     * \param hour The hour as a short.
+     * \param minute The minute as a short.
+     * \param second The second as a short.
+     * \param[out] item The item to create. This can either be a wrapper created using
+     *                 ::XQC_ItemFactory::create_item or a pointer initialized to 0.
+     *
+     * \retval ::XQC_NO_ERROR
+     * \retval ::XQP0019_INTERNAL_ERROR
+     * \retval ::XQP0025_COULD_NOT_CREATE_ITEM
+     *)
+    create_time: function(factory: XQC_ItemFactory; hour, minute: cshort; second: cdouble; out item: XQC_Item): XQUERY_ERROR; extdecl;
+
+
+    (**
+     * Creates a Time Item see [http://www.w3.org/TR/xmlschema-2/#time]
+     *
+     * \param factory The XQC_ItemFactory that this function pointer is a member of
+     * \param hour The hour as a short.
+     * \param minute The minute as a short.
+     * \param second The second as a double.
+     * \param timezone_hours The timezone hours as a short.
+     * \param[out] item The item to create. This can either be a wrapper created using
+     *                 ::XQC_ItemFactory::create_item or a pointer initialized to 0.
+     *
+     * \retval ::XQC_NO_ERROR
+     * \retval ::XQP0019_INTERNAL_ERROR
+     * \retval ::XQP0025_COULD_NOT_CREATE_ITEM
+     *)
+    create_time_timezone: function(factory: XQC_ItemFactory; hour, minute: cshort; second: cdouble;
+      timezone_hours: cshort; out item: XQC_Item): XQUERY_ERROR; extdecl;
+
+
+    (**
+     * Creates an Unsigned Byte Item see [http://www.w3.org/TR/xmlschema-2/#unsignedByte]
+     *
+     * \param factory The XQC_ItemFactory that this function pointer is a member of
+     * \param value The unsigned byte value as an unsigned char.
+     * \param[out] item The item to create. This can either be a wrapper created using
+     *                 ::XQC_ItemFactory::create_item or a pointer initialized to 0.
+     *
+     * \retval ::XQC_NO_ERROR
+     * \retval ::XQP0019_INTERNAL_ERROR
+     * \retval ::XQP0025_COULD_NOT_CREATE_ITEM
+     *)
+    create_unsignedbyte: function(factory: XQC_ItemFactory; value: cuchar; out item: XQC_Item): XQUERY_ERROR; extdecl;
+
+
+    (**
+     * Creates an unsigned int Item see [http://www.w3.org/TR/xmlschema-2/#unsignedInt]
+     *
+     * \param factory The XQC_ItemFactory that this function pointer is a member of
+     * \param value The unsigned int value as an unsigned int.
+     * \param[out] item The item to create. This can either be a wrapper created using
+     *                 ::XQC_ItemFactory::create_item or a pointer initialized to 0.
+     *
+     * \retval ::XQC_NO_ERROR
+     * \retval ::XQP0019_INTERNAL_ERROR
+     * \retval ::XQP0025_COULD_NOT_CREATE_ITEM
+     *)
+    create_unsignedint: function(factory: XQC_ItemFactory; value: cuint; out item: XQC_Item): XQUERY_ERROR; extdecl;
+
+
+    (**
+     * Creates an unsignedLong Item see [http://www.w3.org/TR/xmlschema-2/#unsignedLong]
+     *
+     * \param factory The XQC_ItemFactory that this function pointer is a member of
+     * \param value The unsigned long value as an unsigned long long.
+     * \param[out] item The item to create. This can either be a wrapper created using
+     *                 ::XQC_ItemFactory::create_item or a pointer initialized to 0.
+     *
+     * \retval ::XQC_NO_ERROR
+     * \retval ::XQP0019_INTERNAL_ERROR
+     * \retval ::XQP0025_COULD_NOT_CREATE_ITEM
+     *)
+    create_unsignedlong: function(factory: XQC_ItemFactory; value: culonglong; out item: XQC_Item): XQUERY_ERROR; extdecl;
+
+
+    (**
+     * Creates a unsignedShort Item see [http://www.w3.org/TR/xmlschema-2/#unsignedShort]
+     *
+     * \param factory The XQC_ItemFactory that this function pointer is a member of
+     * \param value The unsigned short value as an unsigned short.
+     * \param[out] item The item to create. This can either be a wrapper created using
+     *                 ::XQC_ItemFactory::create_item or a pointer initialized to 0.
+     *
+     * \retval ::XQC_NO_ERROR
+     * \retval ::XQP0019_INTERNAL_ERROR
+     * \retval ::XQP0025_COULD_NOT_CREATE_ITEM
+     *)
+    create_unsignedshort: function(factory: XQC_ItemFactory; value: cushort; out item: XQC_Item): XQUERY_ERROR; extdecl;
+
+
+    (**
+     * Called to free the resources associated with the XQC_ItemFactory.
+     *
+     * \param factory The XQC_ItemFactory that this function pointer is a member of
+     * \param[out] item The item to create. This can either be a wrapper created using
+     *                 ::XQC_ItemFactory::create_item or a pointer initialized to 0.
+     *)
+    free: procedure(factory: XQC_ItemFactory); extdecl;
+
+
+    (**
+     * for internal use only
+     *)
+    data: pointer;
+  end;
+
+
+(**
+ * This struct represents an instance of the XQuery 1.0 and XPath 2.0 Data Model (XDM).
+ *
+ * See http://www.w3.org/TR/xpath-datamodel/.
+ *)
+  XQC_Sequence_s = record
+    (**
+     * Get the next item of the sequence.
+     *
+     * \param sequence The XQC_Sequence_s that this function pointer is a member of
+     * \param[out] item The item wrapper that should contain the next item if XQ_NO_ERROR is returned
+     *
+     * \retval ::XQC_NO_ERROR
+     * \retval ::XQP0019_INTERNAL_ERROR
+     * \retval any XQuery type or dynamic error
+     *)
+    next: function(sequence: XQC_Sequence; item: XQC_Item): XQUERY_ERROR; extdecl;
+
+
+    (**
+     * called to free the resources associated with the xqc_itemfactory.
+     *
+     * \param sequence the XQC_Sequence that this function pointer is a member of
+     *)
+    free: procedure(sequence: XQC_Sequence); extdecl;
+
+
+    (**
+     * for internal use only
+     *)
+    data: pointer;
+  end;
+
+
+(**
+ * A Collection is a sequence of Node Items.
+ *
+ * Each Collection is created by the XmlDataManager and referenced by a URI.
+ * The URI can be accessed in a query's fn:collection function.
+ *)
+  XQC_Collection_s = record
+    (**
+     * Get the URI of a collection as an anyURI Item.
+     *
+     * \param collection the XQC_Collection_s that this function pointer is a member of
+     * \param[out] uri_item The uri item of the given collection. The user is responsible
+     *             for freeing the object by calling the XQC_Item::free() function.
+     *
+     * \retval ::XQC_NO_ERROR
+     * \retval ::XQP0019_INTERNAL_ERROR
+     *)
+    get_name: function(collection: XQC_Collection; out name_item: XQC_Item): XQUERY_ERROR; extdecl;
+
+
+    (**
+     * Adds a Node Item to the Collection
+     *
+     * \param collection the XQC_Collection_s that this function pointer is a member of
+     * \param node The node item to add to the given collection.
+     *
+     * \retval ::XQC_NO_ERROR
+     * \retval ::XQP0019_INTERNAL_ERROR
+     * \retval ::API0007_COLLECTION_ITEM_MUST_BE_A_NODE
+     *)
+    add_node: function(collection: XQC_Collection; node: XQC_Item): XQUERY_ERROR; extdecl;
+
+
+    (**
+     * Deletes a Node Item from the given Collection
+     *
+     * \param collection the XQC_Collection_s that this function pointer is a member of
+     * \param node The node item to delete from the given collection.
+     *
+     * \retval ::XQC_NO_ERROR
+     * \retval ::XQP0019_INTERNAL_ERROR
+     * \retval ::API0007_COLLECTION_ITEM_MUST_BE_A_NODE
+     *)
+    delete_node: function(collection: XQC_Collection; node: XQC_Item): XQUERY_ERROR; extdecl;
+
+
+    (**
+     * Adds a sequence of Node Items to the Collection
+     *
+     * \param collection the XQC_Collection_s that this function pointer is a member of
+     * \param sequence The sequence of node items to add to the given collection.
+     *
+     * \retval ::XQC_NO_ERROR
+     * \retval ::XQP0019_INTERNAL_ERROR
+     * \retval ::API0007_COLLECTION_ITEM_MUST_BE_A_NODE
+     *)
+    add_sequence: function(collection: XQC_Collection; sequence: XQC_Sequence): XQUERY_ERROR; extdecl;
+
+
+    (**
+     * Adds a document given by the FILE pointer to this collection.
+     *
+     * \param collection the XQC_Collection_s that this function pointer is a member of
+     * \param doc The document to add as a FILE pointer.
+     *
+     * \retval ::XQC_NO_ERROR
+     * \retval ::XQP0016_LOADER_IO_ERROR,
+     * \retval ::XQP0017_LOADER_PARSING_ERROR,
+     * \retval ::XQC_INTERNAL_ERROR
+     *)
+    add_document: function(collection: XQC_Collection; doc: pfile): XQUERY_ERROR; extdecl;
+
+
+    (**
+     * Adds a document given by the char pointer to this collection.
+     *
+     * \param collection the XQC_Collection_s that this function pointer is a member of
+     * \param doc The document to add as a char pointer.
+     *
+     * \retval ::XQC_NO_ERROR
+     * \retval ::XQP0016_LOADER_IO_ERROR,
+     * \retval ::XQP0017_LOADER_PARSING_ERROR,
+     * \retval ::XQC_INTERNAL_ERROR
+     *)
+    add_document_char: function(collection: XQC_Collection; const doc: pchar): XQUERY_ERROR; extdecl;
+
+
+    (**
+     * called to free the resources associated with the xqc_itemfactory.
+     *
+     * \param collection the XQC_Collection that this function pointer is a member of
+     *)
+    free: procedure(collection: XQC_Collection); extdecl;
+
+
+    (**
+     * for internal use only
+     *)
+    data: pointer;
+  end;
+
+
+(**
+ * Using the XmlDataManager one can manage documents and collections.
+ *
+ * The XmlDataManager is a singelton instance. The instance can be accessed by calling
+ * XQC_Implementation::data_manager. The XmlDataManager is thread-safe.
+ *)
+  XQC_DataManager_s = record
+    (**
+     * This function loads a document from the given FILE pointer. The document
+     * is identified by the given URI.
+     *
+     * \param data_manager The XQC_DataManager that this function pointer is a member of
+     * \param doc_uri The URI of the document to load.
+     * \param document The document to load as a FILE pointer.
+     *
+     * \retval ::XQC_NO_ERROR
+     * \retval ::XQP0016_LOADER_IO_ERROR,
+     * \retval ::XQP0017_LOADER_PARSING_ERROR,
+     * \retval ::XQC_INTERNAL_ERROR
+     *)
+    load_document: function(data_manager: XQC_DataManager; const doc_uri: pchar; document: pfile): XQUERY_ERROR; extdecl;
+
+
+    (**
+     * This function loads a document that is retrieved from the given URI location. The document
+     * is identified by the given URI.
+     *
+     * \param data_manager The XQC_DataManager that this function pointer is a member of
+     * \param location The URI of the document to load.
+     *
+     * \retval ::XQC_NO_ERROR
+     * \retval ::XQP0016_LOADER_IO_ERROR,
+     * \retval ::XQP0017_LOADER_PARSING_ERROR,
+     * \retval ::XQC_INTERNAL_ERROR
+     *)
+    load_document_uri: function(data_manager: XQC_DataManager; const location: pchar): XQUERY_ERROR; extdecl;
+
+
+    (**
+     * Get the document identified by the given URI.
+     *
+     * \param data_manager The XQC_DataManager that this function pointer is a member of
+     * \param document_uri The URI of the document to retrieve.
+     * \param[out] doc The Item of the document to get.  The user is responsible
+     *                 for freeing the object by calling the XQC_Item::free() function.
+     *
+     * \retval ::XQC_NO_ERROR
+     * \retval ::XQC_INTERNAL_ERROR
+     *)
+    get_document: function(data_manager: XQC_DataManager; const document_uri: pchar; out doc: XQC_Item): XQUERY_ERROR; extdecl;
+
+
+    (*
+     * Delete the document identified by the given URI.
+     *
+     * \param data_manager The XQC_DataManager that this function pointer is a member of
+     * \param document_uri The URI of the document to delete.
+     *
+     * \retval ::XQC_NO_ERROR
+     * \retval ::XQC_INTERNAL_ERROR
+     *)
+    delete_document: function(data_manager: XQC_DataManager; const document_uri: pchar): XQUERY_ERROR; extdecl;
+
+
+    (**
+     * Create a new collection that is identified by the given URI.
+     *
+     * \param data_manager The XQC_DataManager that this function pointer is a member of
+     * \param document_uri The URI of the collection to create.
+     * \param[out] col The collection to create. The user is responsible
+     *                 for freeing the object by calling the XQC_Item::free() function.
+     *
+     * \retval ::XQC_NO_ERROR
+     * \retval ::XQC_INTERNAL_ERROR
+     *)
+    create_collection: function(data_manager: XQC_DataManager; const collection_uri: pchar; out col: XQC_Collection): XQUERY_ERROR; extdecl;
+
+
+    (**
+     * Get the collection that is identified by the given URI.
+     *
+     * \param data_manager The XQC_DataManager that this function pointer is a member of
+     * \param document_uri The URI of the collection to retrieve.
+     * \param[out] col The collection to retrieve. The user is responsible
+     *                 for freeing the object by calling the XQC_Item::free() function.
+     *
+     * \retval ::XQC_NO_ERROR
+     * \retval ::XQC_INTERNAL_ERROR
+     *)
+    get_collection: function(data_manager: XQC_DataManager; const collection_uri: pchar; out col: XQC_Collection): XQUERY_ERROR; extdecl;
+
+
+    (**
+     * Delete the collection that is identified by the given URI.
+     *
+     * \param data_manager The XQC_DataManager that this function pointer is a member of
+     * \param document_uri The URI of the collection to delete.
+     *
+     * \retval ::XQC_NO_ERROR
+     * \retval ::XQC_INTERNAL_ERROR
+     *)
+    delete_collection: function(data_manager: XQC_DataManager; const collection_uri: pchar): XQUERY_ERROR; extdecl;
+
+    (**
+     * Called to free the resources associated with the XQC_DataManager.
+     *
+     * \param context The XQC_DataManager that this function pointer is a member of
+     *)
+    free: procedure(data_manager: XQC_DataManager); extdecl;
+
+
+    (**
+     * for internal use only
+     *)
+    data: pointer;
+  end;
+
+
+(**
+ * The ::XQC_OutputStream struct is designed to be passed to an XQC implementation in order
+ * to return streaming data (i.e. the result of a query).
+ *)
+  XQC_OutputStream_s = record
+    (**
+     * The function is called to provide the streaming result of a query
+     * in the buffer provided.
+     *
+     * \param stream The XQC_OutputStream that this function pointer is a member of
+     * \param buf The buffer that contains the data
+     * \param length The length of the contents in the buffer
+     *)
+    write: procedure(stream: XQC_OutputStream; const buf: pchar; length: cuint); extdecl;
+
+
+    (**
+     * Called to free the resources associated with the XQC_OutputStream.
+     * Free is called by the implementation if it finished writing to the stream.
+     *
+     * \param stream The XQC_OutputStream that this function pointer is a member of
+     *
+     *)
+    free: procedure(stream: XQC_OutputStream); extdecl;
+
+
+    (**
+     * for internal use only
+     *)
+    data: pointer;
+  end;
+
+
+(**
+ * The ::XQC_InputStream struct is designed to be populated by users for the purpose
+ * of streaming data into an XQC implementation.
+ *)
+  XQC_InputStream_s = record
+     (**
+      * The function called to read more of the input (e.g. the query). The function should read
+      * the next chunk of input into the buffer provided, returning the length of the
+      * data read.
+      *
+      * \param stream The XQC_InputStream that this function pointer is a member of
+      * \param[out] buffer The buffer to read the data into
+      * \param length The length of the buffer
+      *
+      * \return The number of bytes read - this will be less than length if the end of the input is reached
+      *         or -1 if an error occured
+      *
+      *)
+    read: function(stream: XQC_InputStream; const buf: pchar; length: cuint): cint; extdecl;
+
+
+    (**
+     * Called to free the resources associated with the XQC_InputStream.
+     * The free function is called by the implementation if it finished reading from the stream.
+     * This allows for lazy evaluation without the user needing to know when reading from the
+     * stream has finished.
+     *
+     * \param stream The XQC_InputStream that this function pointer is a member of
+     *
+     *)
+    free: procedure(stream: XQC_InputStream); extdecl;
+
+
+    (**
+     * for internal use only
+     *)
+    data: pointer;
+  end;
+
+
+(**
+ * The ::XQC_ErrorHandler struct is designed to be populated by users for the purpose
+ * of collecting more detailed error messages from an XQC implementation. An XQC_ErrorHandler
+ * can be set for a query using the XQC_Query::set_error_handler() function.
+ *
+ * The XQC_ErrorHandler struct has no free() function pointer because the user remains
+ * responsible for freeing the resources associated with this struct.
+ *)
+  XQC_ErrorHandler_s = record
+    (**
+     * The function is called when an error occurs. The function receives the components of the
+     * error as arguments. When this function returns, the implementation will exit query parsing or
+     * execution with the error enumeration value passed as an argument.
+     *
+     * \param handler The XQC_ErrorHandler that this function pointer is a member of
+     * \param error The error as a value of the XQUERY_ERROR enum.
+     * \param local_name The local name of the error or an empty string if no local_name is given
+     *                   (e.g. for errors not defined in the spec).
+     * \param description A detailed description of the error or an empty string if no description is available.
+     * \param query_uri The uri of the query causing the error or an empty string if no uri is available for the query.
+     * \param line The line number of the query where the error occured.
+     * \param components The column number in the line in the query where the error occured.
+     *)
+    error: procedure(handler: XQC_ErrorHandler; error: XQUERY_ERROR; const local_name, description,
+      query_uri: pchar; line, column: cuint); extdecl;
+
+
+    (**
+     * Can be used for user specific purposes.
+     *)
+    data: pointer;
+  end;
+
+implementation
+
+end.
diff --git a/packages/zorba/src/zorba_error.inc b/packages/zorba/src/xqc_error.inc
index e815ed3b41..e815ed3b41 100644
--- a/packages/zorba/src/zorba_error.inc
+++ b/packages/zorba/src/xqc_error.inc
diff --git a/packages/zorba/src/zorba_static_context_consts.inc b/packages/zorba/src/xqc_static_context_consts.inc
index b66dfc290d..b66dfc290d 100644
--- a/packages/zorba/src/zorba_static_context_consts.inc
+++ b/packages/zorba/src/xqc_static_context_consts.inc
diff --git a/packages/zorba/src/zorba.inc b/packages/zorba/src/zorba.inc
index d27b118508..b7672ff723 100644
--- a/packages/zorba/src/zorba.inc
+++ b/packages/zorba/src/zorba.inc
@@ -1,3 +1,19 @@
+(*
+ * Copyright 2006-2008 The FLWOR Foundation.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *)
+
 {$mode objfpc}{$H+}
 {$PACKRECORDS C}
 {$MACRO ON}
@@ -5,7 +21,7 @@
 interface
 
 uses
-  ctypes, dynlibs;
+  ctypes, dynlibs, xqc;
 
 {$IFDEF UNIX}
   {$DEFINE extdecl:=cdecl}
@@ -26,2035 +42,9 @@ uses
   {$DEFINE S}
 {$ENDIF}
 
-
-(*
- * Copyright 2006-2008 The FLWOR Foundation.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- * 
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- *)
-
 {.$i zorba_config.inc}
-{$i zorba_error.inc}
-{$i zorba_static_context_consts.inc}
 {$i zorba_options.inc}
 
-type
-  pfile = pointer;
-
-  XQC_Implementation = ^XQC_Implementation_s;
-  XQC_Implementation_Ref = ^XQC_Implementation;
-
-  XQC_Query = ^XQC_Query_s;
-  XQC_Query_Ref = ^XQC_Query;
-
-  XQC_StaticContext = ^XQC_StaticContext_s;
-  XQC_StaticContext_Ref = ^XQC_StaticContext;
-
-  XQC_DynamicContext = ^XQC_DynamicContext_s;
-  XQC_DynamicContext_Ref = ^XQC_DynamicContext;
-
-  XQC_Sequence = ^XQC_Sequence_s;
-  XQC_Sequence_Ref = ^XQC_Sequence;
-
-  XQC_Item = ^XQC_Item_s;
-  XQC_Item_Ref = ^XQC_Item;
-
-  XQC_ItemFactory = ^XQC_ItemFactory_s;
-  XQC_ItemFactory_Ref = ^XQC_ItemFactory;
-
-  XQC_Collection = ^XQC_Collection_s;
-  XQC_Collection_Ref = ^XQC_Collection;
-
-  XQC_DataManager = ^XQC_DataManager_s;
-  XQC_DataManager_Ref = ^XQC_DataManager;
-
-  XQC_OutputStream = ^XQC_OutputStream_s;
-  XQC_InputStream = ^XQC_InputStream_s;
-  XQC_ErrorHandler = ^XQC_ErrorHandler_s;
-
-
-// external functions
-  external_function_init = procedure(out user_data: Pointer; global_user_data: Pointer); extdecl;
-
-  external_function_next = function(args: XQC_Sequence; argc: cint; out result: XQC_Item;
-    user_data: Pointer; global_user_data: Pointer): XQUERY_ERROR; extdecl;
-
-  external_function_release = procedure(user_data: Pointer; global_user_data: Pointer); extdecl;
-
-
-(**
- * The ::XQC_Implementation struct provides factory functions for parsing queries. 
- * An XQC_Implementation object is thread-safe and can be used by multiple threads 
- * of execution at the same time.
- *
- * Creating an XQC_Implementation object can be done using the zorba_implementation function.
- * Once created, the user is responsible for freeing the object by calling
- * the free() function. 
- * The XQC_Implementation object should not be freed before all objects created using it's
- * functions have been freed - doing so causes undefined behaviour.
- *)
-  XQC_Implementation_s = record
-   (**
-    * Creates a static context suitable for use in the parse() and parse_file()
-    * functions. The user is responsible for freeing the ::XQC_StaticContext object returned by calling
-    * XQC_StaticContext::free().
-    *
-    * \param implementation The XQC_Implementation that this function pointer is a member of
-    * \param[out] context The newly created XQC_StaticContext object.
-    *
-    * \retval ::XQC_NO_ERROR
-    * \retval ::XQP0019_INTERNAL_ERROR
-    *)
-    create_context: function(impl: XQC_Implementation; out context: XQC_StaticContext): XQUERY_ERROR; extdecl;
-
-   (**
-    * Prepares a query from a string, returning an ::XQC_Query object.
-    * The user is responsible for freeing the ::XQC_Query object
-    * returned by calling XQC_Query::free().
-    *
-    * \param implementation The XQC_Implementation that this function pointer is a member of.
-    * \param string The query to prepare as a string.
-    * \param context The initial static context for this query, or null to use the default
-    *        static context.
-    * \param handler An optional error handler whose <code>error</code> function is called
-    *                if preparing the query fails.
-    * \param[out] expression The resulting prepared expression.
-    *
-    * \retval ::XQC_NO_ERROR
-    * \retval ::XQP0019_INTERNAL_ERROR
-    * \retval An XQuery static or type error (e.g. XPST*, XPTY* )
-    *)
-    prepare: function(impl: XQC_Implementation; query_string: pchar; context: XQC_StaticContext;
-      handler: XQC_ErrorHandler; out query: XQC_Query): XQUERY_ERROR; extdecl;
-
-    (**
-     * Prepares a query from a FILE pointer, returning an ::XQC_Query object.
-     * The user remains responsible for closing the file after parsing.
-     * The user is responsible for freeing the ::XQC_Query object returned by
-     * calling XQC_Query::free().
-     *
-     * \param implementation The XQC_Implementation that this function pointer is a member of.
-     * \param file The file containing the query to prepare.
-     * \param context The initial static context for this query, or null to use the default
-     *        static context.
-     * \param handler An optional error handler whose <code>error</code> function is called
-     *                if preparing the query fails.
-     * \param[out] expression The resulting prepared expression.
-     *
-     * \retval ::XQC_NO_ERROR
-     * \retval ::XQP0019_INTERNAL_ERROR
-     * \retval An XQuery static or type error (e.g. XPST*, XPTY* )
-     *)
-    prepare_file: function(impl: XQC_Implementation; query_file: pfile; context: XQC_StaticContext;
-      handler: XQC_ErrorHandler; out query: XQC_Query): XQUERY_ERROR; extdecl;
-
-    (**
-     * Prepares a query from a ::XQC_InputStream, returning an ::XQC_Query object.
-     * The user is responsible for freeing the ::XQC_Query object returned by
-     * calling XQC_Query::free().
-     *
-     * \param implementation The XQC_Implementation that this function pointer is a member of.
-     * \param stream The input stream returning the query to prepare.
-     *               free will be called on the XQC_InputStream after the query has been read.
-     * \param context The initial static context for this query, or null to use the default
-     *        static context.
-     * \param handler An optional error handler whose <code>error</code> function is called
-     *                if preparing the query fails.
-     * \param[out] expression The resulting prepared expression.
-     *
-     * \retval ::XQC_NO_ERROR
-     * \retval ::XQP0019_INTERNAL_ERROR
-     * \retval An XQuery static or type error (e.g. XPST*, XPTY* )
-     *)
-    prepare_stream: function(impl: XQC_Implementation; stream: XQC_InputStream; context: XQC_StaticContext;
-      handler: XQC_ErrorHandler; out query: XQC_Query): XQUERY_ERROR; extdecl;
-
-
-    (**
-     * Creates an item wrapper suitable for use in the ::XQC_Sequence::next function or
-     * the ::XQC_ItemFactory::create functions.
-     * The user is responsible for freeing the XQC_Item object returned by calling
-     * XQC_Item::free().
-     *
-     * \param implementation The XQC_Implementation that this function pointer is a member of
-     * \param[out] item The newly created XQC_Item wrapper object.
-     *
-  	 * \retval ::XQC_NO_ERROR
-  	 * \retval ::XQP0019_INTERNAL_ERROR
-     *)
-    create_item: function(impl: XQC_Implementation; out item: XQC_Item): XQUERY_ERROR; extdecl;
-
-
-    (**
-     * Creates a XQC_ItemFactory that can be used for creating items, i.e. instances of the
-     * XQuery data model (XDM).
-     * The user is responsible for freeing the XQC_ItemFactory object returned by calling
-     * XQC_ItemFactory::free().
-     *
-     * \param implementation The XQC_Implementation that this function pointer is a member of
-     * \param[out] factory The newly created XQC_ItemFactory  object.
-     *
-  	 * \retval ::XQC_NO_ERROR
-  	 * \retval ::XQP0019_INTERNAL_ERROR
-     *)
-    item_factory: function(impl: XQC_Implementation; out factory: XQC_ItemFactory): XQUERY_ERROR; extdecl;
-
-
-    (**
-     * Creates a XQC_DataManager that can be used for managing collections and documents.
-     * The user is responsible for freeing the XQC_DataManager object returned by calling
-     * XQC_DataManager::free().
-     *
-     * \param implementation The XQC_Implementation that this function pointer is a member of
-     * \param[out] data_manager The newly created XQC_DataManager object.
-     *
-  	 * \retval ::XQC_NO_ERROR
-  	 * \retval ::XQP0019_INTERNAL_ERROR
-     *)
-    data_manager: function(impl: XQC_Implementation; out data_manager: XQC_DataManager): XQUERY_ERROR; extdecl;
-
-
-    (**
-     * Called to free the resources associated with the XQC_Implementation.
-     *
-     * \param implementation The XQC_Implementation that this function pointer is a member of
-     *)
-    free: procedure(impl: XQC_Implementation); extdecl;
-
-    (**
-     * for internal use only
-     *)
-    data: pointer;
-  end;
-
-
-(**
- * The ::XQC_Expression struct represents a pre-parsed query, and allows the user to execute 
- * that query any number of times. An ::XQC_Expression object is thread-safe and 
- * can be used by multiple threads of execution at the same time.
- *
- * ::XQC_Expression objects are created by calling the XQC_Implementation::prepare() or 
- * XQC_Implementation::prepare_file() functions. 
- * Once created, the user is responsible for freeing the object by calling the free() function. 
- * The ::XQC_Expression object should be freed before the ::XQC_Implementation object
- * that created it.
- *)
- XQC_Query_s = record
-    (**
-     * This function returns the dynamic context that belongs to this query and
-     * is used during query execution.
-     * The context can be used, for example, to set values of external variables,
-     * the default collation, or the current datetime.
-     * It is only available if the query has been compiled, otherwise
-     * an error is reported. Moreover, the context must not be modified during the
-     * execution of a query (i.e. if a ResultIterator is opened).
-  	 * The user is responsible for freeing the ::XQC_DynamicContext object returned by calling
-  	 * XQC_DynamicContext::free().
-     *
-  	 * \retval ::XQC_NO_ERROR
-  	 * \retval ::XQP0019_INTERNAL_ERROR
-     *)
-    get_dynamic_context: function(query: XQC_Query; out context: XQC_DynamicContext): XQUERY_ERROR; extdecl;
-
-
-    (**
-     * This function returns the static context that belongs to this query.
-     * The static context is only available if the query has been compiled, otherwise
-     * an error is reported.
-     * The context has all the components and values that have been set by the either
-     * the static context that was passed when creating the query and and those that
-     * were set in the prolog of the query.
-     * Note that after compilation of the query the static context is a read only structure.
-  	 * The user is responsible for freeing the ::XQC_StaticContext object returned by calling
-  	 * XQC_StaticContext::free().
-     *
-  	 * \retval ::XQC_NO_ERROR
-  	 * \retval ::XQP0019_INTERNAL_ERROR
-     *)
-    get_static_context: function(query: XQC_Query; out context: XQC_StaticContext): XQUERY_ERROR; extdecl;
-
-
-   (**
-    * Executes the query represented by the XQC_Query object and prints the serialized XML
-    * output to the given FILE pointer. The user remains responsible for closing
-    * the file.
-    *
-    * \param query The XQC_Query that this function pointer is a member of.
-    * \param file The FILE pointer to print the serialized result to.
-    *
-    * \retval ::XQC_NO_ERROR
-    * \retval ::XQP0019_INTERNAL_ERROR
-    * \retval ::API0023_CANNOT_SERIALIZE_UPDATE_QUERY
-    * \retval An XQuery dynamic or type error (e.g. XPDY*, XPTY* )
-    *)
-    execute: function(query: XQC_Query; fileptr: pfile): XQUERY_ERROR; extdecl;
-
-
-   (**
-    * Executes the query represented by the XQC_Query object and prints the serialized
-    * output to the given FILE pointer. The target format of the serialization is
-    * specified by the passed serializer options.
-    *
-    * \param query The XQC_Query that this function pointer is a member of.
-    * \param options The Zorba_SerializerOptions_t that specifies serializer options.
-    * \param file The FILE pointer to print the serialized result to.
-    *
-    * \retval ::XQC_NO_ERROR
-    * \retval ::XQP0019_INTERNAL_ERROR
-    * \retval ::API0023_CANNOT_SERIALIZE_UPDATE_QUERY
-    * \retval An XQuery dynamic or type error (e.g. XPDY*, XPTY* )
-    *)
-    serialize_file: function(query: XQC_Query; options: pZorba_SerializerOptions_t; fileptr: pfile): XQUERY_ERROR; extdecl;
-
-
-   (**
-    * Executes the query represented by the XQC_Query object and writes the serialized
-    * output to the given ::XQC_OutputStream. The target format of the serialization is
-    * specified by the passed serializer options.
-    *
-    * \param query The XQC_Query that this function pointer is a member of.
-    * \param options The Zorba_SerializerOptions_t that specifies serializer options.
-    * \param file The XQC_OutputStream to print the serialized result to.
-    *
-    * \retval ::XQC_NO_ERROR
-    * \retval ::XQP0019_INTERNAL_ERROR
-    * \retval ::API0023_CANNOT_SERIALIZE_UPDATE_QUERY
-    * \retval An XQuery dynamic or type error (e.g. XPDY*, XPTY*)
-    serialize_stream: function(query: XQC_Query; options: pZorba_SerializerOptions_t; stream: XQC_OutputStream): XQUERY_ERROR; extdecl;
-
-
-   (**
-    * Checks if the query is an updating query.
-    *
-    * \param query The XQC_Query that this function pionter is a member of.
-    *
-    * \retval 1 if query is updating query, else 0
-    *)
-    is_update_query: function(query: XQC_Query): cint; extdecl;
-
-
-   (**
-    * Applies the updates declared in the query represented by the XQC_Query object.
-    *
-    * \param query The XQC_Query that this function pointer is a member of.
-    *
-    * \retval ::XQC_NO_ERROR
-    * \retval ::XQP0019_INTERNAL_ERROR
-    * \retval ::API0023_CANNOT_SERIALIZE_UPDATE_QUERY
-    * \retval An XQuery dynamic or type error (e.g. XPDY*, XPTY*)
-    apply_updates: function(query: XQC_Query): XQUERY_ERROR; extdecl;
-
-
-   (**
-    * Executes the query represented by the XQC_Query object.
-    * An ::XQC_Sequence object is returned which can be used to examine the results
-    * of the query execution. The user is responsible for freeing the
-    * ::XQC_Sequence object returned by calling XQC_Sequence::free().
-    *
-    * \param query The XQC_Query that this function pointer is a member of.
-    * \param[out] sequence The newly created XQC_Sequence object.
-    *
-    * \retval ::XQC_NO_ERROR
-    * \retval ::XQP0019_INTERNAL_ERROR
-    * \retval ::API0024_CANNOT_ITERATE_OVER_UPDATE_QUERY
-    * \retval An XQuery dynamic or type error (e.g. XPDY*, XPTY* )
-    *)
-    sequence: function(query: XQC_Query; out sequence: XQC_Sequence): XQUERY_ERROR; extdecl;
-
-
-    (**
-     * Sets the error handler whose <code>error</code> function is called
-     * if an error occurs when executing the query.
-     * The user keeps the ownership of this object and is required to freeing
-     * the aquired resources.
-     *)
-    set_error_handler: procedure(query: XQC_Query; handler: XQC_ErrorHandler); extdecl;
-
-
-   (**
-    * Called to free the resources associated with the XQC_Query.
-    *
-    * \param query The XQC_Query that this function pointer is a member of.
-    *)
-    free: procedure(query: XQC_Query); extdecl;
-
-
-    (**
-     * for internal use only
-     *)
-    data: pointer;
-  end;
-
-
-(**
- * The ::XQC_StaticContext struct provides a way to specify values for the static context of 
- * the query to be prepared. An ::XQC_StaticContext object is not thread-safe - threads should 
- * each use their own instance of a ::XQC_StaticContext object (see create_child_context).
- *
- * ::XQC_StaticContext objects are created by calling the XQC_Implementation::create_context() 
- * function. Once created, the user is responsible for freeing the object by calling
- * the free() function. 
- * The ::XQC_StaticContext object should be freed before the ::XQC_Implementation object that
- * created it.
- *)
-  XQC_StaticContext_s = record
-   (**
-    * Creates a child context of the given static context.
-    * A child context contains the same information as it's parent context but
-    * it allows the user to override and add information.
-    * The user is responsible for freeing the ::XQC_StaticContext object returned by calling
-    * XQC_StaticContext::free().
-    *
-    * \param context The XQC_StaticContext that this function pointer is a member of
-    * \param[out] child_context The newly created XQC_StaticContext object which is
-    *             a child of the given context.
-    *
-    * \retval ::XQC_NO_ERROR
-    * \retval ::XQP0019_INTERNAL_ERROR
-    *)
-    create_child_context: function(context: XQC_StaticContext; out child_context: XQC_StaticContext): XQUERY_ERROR; extdecl;
-
-
-   (**
-    * Adds a (prefix, uri) pair to the set of statically known namespaces of
-    * the given context.
-    *
-    * \param context The XQC_StaticContext that this function pointer is a member of.
-    * \param prefix The prefix of the namespace to add to the given XQC_StaticContext.
-    * \param uri    The uri of the namespace to add to the given XQC_StaticContext.
-    *
-    * \retval ::XQC_NO_ERROR
-    * \retval ::XQC_INTERNAL_ERROR
-    *)
-    declare_ns: function(context: XQC_StaticContext; const prefix: pchar; const uri: ppchar): XQUERY_ERROR; extdecl;
-
-
-   (**
-    * Returns the namespace uri that belongs to the given prefix.
-    *
-    * \param context The XQC_StaticContext that this function pointer is a member of
-    * \param prefix The prefix of the namespace to add to the given XQC_StaticContext.
-    * \param[out] result_ns The namespace uri of the namespace registered with the given prefix.
-    *
-    * \retval ::XQC_NO_ERROR
-    * \retval ::XQC_INTERNAL_ERROR
-    *)
-    get_ns_by_prefix: function(context: XQC_StaticContext; const prefix: pchar; out result_ns: ppchar): XQUERY_ERROR; extdecl;
-
-
-    (**
-     * Sets the value of the default namespace for elements and types.
-     *
-  	 * \param context The XQC_StaticContext that this function pointer is a member of
-     * \param uri The uri of the default element and type namespace to set in the given context.
-     *
-  	 * \retval ::XQC_NO_ERROR
-  	 * \retval ::XQC_INTERNAL_ERROR
-     *)
-    set_default_element_and_type_ns: function(context: XQC_StaticContext; const uri: pchar): XQUERY_ERROR; extdecl;
-
-
-   (**
-    * Returns the default namespace for elements and types.
-    *
-    * \param context The XQC_StaticContext that this function pointer is a member of
-    * \param[out] uri The uri of the default element and type namespace that is set in the given context.
-    *
-    * \retval ::XQC_NO_ERROR
-    * \retval ::XQC_INTERNAL_ERROR
-    *)
-    get_default_element_and_type_ns: function(context: XQC_StaticContext; out uri: pchar): XQUERY_ERROR; extdecl;
-
-
-   (**
-    * Sets the default namespace for functions.
-    *
-    * \param context The XQC_StaticContext that this function pointer is a member of
-    * \param uri The uri of the default function namespace to set in the given context.
-    *
-    * \retval ::XQC_NO_ERROR
-    * \retval ::XQC_INTERNAL_ERROR
-    *)
-    set_default_function_ns: function(context: XQC_StaticContext; const uri: pchar): XQUERY_ERROR; extdecl;
-
-
-   (**
-    * Returns the default namespace for functions set in this static context.
-    *
-    * \param context The XQC_StaticContext that this function pointer is a member of
-    * \param[out] uri The uri of the default function namespace that is set in the given context.
-    *
-    * \retval ::XQC_NO_ERROR
-    * \retval ::XQC_INTERNAL_ERROR
-    *)
-    get_default_function_ns: function(context: XQC_StaticContext; out uri: pchar): XQUERY_ERROR; extdecl;
-
-
-    (**
-     * Add a collation URI.
-     * The URI specifies the locale and collation strength of the collation that is added.
-     * A valid collation URI must begin with http://www.flworfound.org/collations/.
-     * This prefix is followed by a collation strength (i.e. PRIMARY, SECONDARY, TERTIARY,
-     * QUATTERNARY, or IDENTICAL) followed by a '/'.
-     * After the strength a lower-case two- or three-letter ISO-639 language code must follow.
-     * The URI may end with an upper-case two-letter ISO-3166.
-     * For example, http://www.flworfound.org/collations/PRIMARY/en/US
-     * specifies an english language with US begin the country..
-     *
-     * Internally, ICU is used for comparing strings. For detailed description see
-     * http://www.icu-project.org/apiref/icu4c/classCollator.html
-     * and http://www.icu-project.org/apiref/icu4c/classLocale.html
-     *
-     * \param context The XQC_StaticContext that this function pointer is a member of
-     * \param uri The URI of the collation to add.
-     *
-     * \retval ::XQC_NO_ERROR
-     * \retval ::XQST0038
-     * \retval ::XQC_INTERNAL_ERROR
-     *)
-    add_collation: function(context: XQC_StaticContext; const uri: pchar): XQUERY_ERROR; extdecl;
-
-
-    (**
-     * Set the URI of the default collation.
-     * (see http://www.w3.org/TR/xquery/#static_context)
-     *
-     * \param context The XQC_StaticContext that this function pointer is a member of
-     * \param uri The URI of the default collation to set
-     *
-     * \retval ::XQC_NO_ERROR
-     * \retval ::XQST0038
-     * \retval ::XQC_INTERNAL_ERROR
-     *)
-    set_default_collation: function(context: XQC_StaticContext; const uri: pchar): XQUERY_ERROR; extdecl;
-
-
-    (**
-     * Get the URI of the default collation. The uri returned is valid
-     * as long as the corresponding XQC_StaticContext object is valid.
-     *
-     * \param context The XQC_StaticContext that this function pointer is a member of
-     * \param[out] uri The URI of the default collation that is currently set in the given context.
-     *)
-    get_default_collation: function(context: XQC_StaticContext; out uri: pchar): XQUERY_ERROR; extdecl;
-
-
-    (**
-    * Sets the XQuery processor's version to either xquery_version_1_0 or xquery_version_1_1.
-    *
-    * \param context The XQC_StaticContext that this function pointer is a member of
-    * \param mode The xquery_version_t to set in the given context.
-    *
-    * \retval ::XQC_NO_ERROR
-    * \retval ::XQC_INTERNAL_ERROR
-    *)
-    set_xquery_version: function(context: XQC_StaticContext; mode: xquery_version_t): XQUERY_ERROR; extdecl;
-
-
-   (**
-    * Returns the XQuery processor's version that is set in the given static context.
-    *
-    * \param context The XQC_StaticContext that this function pointer is a member of
-    * \param[out] mode The xquery_version_t that is set in the given context.
-    *
-    * \retval ::XQC_NO_ERROR
-    * \retval ::XQC_INTERNAL_ERROR
-    *)
-    get_xquery_version: function(context: XQC_StaticContext; out mode: xquery_version_t): XQUERY_ERROR; extdecl;
-
-
-   (**
-    * Sets the XPath 1.0 compatibility mode to either xpath1_0 or xpath2_0.
-    *
-    * \param context The XQC_StaticContext that this function pointer is a member of
-    * \param mode The xpath1_0compatib_mode_t to set in the given context.
-    *
-    * \retval ::XQC_NO_ERROR
-    * \retval ::XQC_INTERNAL_ERROR
-    *)
-    set_xpath1_0_mode: function(context: XQC_StaticContext; mode: xpath1_0compatib_mode_t): XQUERY_ERROR; extdecl;
-
-
-   (**
-    * Returns the XPath 1.0 compatibility that is set in the given static context.
-    *
-    * \param context The XQC_StaticContext that this function pointer is a member of
-    * \param[out] mode The xpath1_0compatib_mode_t that is set in the given context.
-    *
-    * \retval ::XQC_NO_ERROR
-    * \retval ::XQC_INTERNAL_ERROR
-    *)
-    get_xpath1_0_mode: function(context: XQC_StaticContext; out mode: xpath1_0compatib_mode_t): XQUERY_ERROR; extdecl;
-
-
-   (**
-    * Sets the construction mode to either preserve_cons or strip_cons.
-    *
-    * \param context The XQC_StaticContext that this function pointer is a member of
-    * \param mode The construction_mode_t to set in the given context.
-    *
-    * \retval ::XQC_NO_ERROR
-    * \retval ::XQC_INTERNAL_ERROR
-    *)
-    set_construction_mode: function(context: XQC_StaticContext; mode: construction_mode_t): XQUERY_ERROR; extdecl;
-
-
-   (**
-    * Returns the construction mode that is set in the given static context.
-    *
-    * \param context The XQC_StaticContext that this function pointer is a member of
-    * \param[out] mode The construction_mode_t that is set in the given context.
-    *
-    * \retval ::XQC_NO_ERROR
-    * \retval ::XQC_INTERNAL_ERROR
-    *)
-    get_construction_mode: function(context: XQC_StaticContext; out mode: construction_mode_t): XQUERY_ERROR; extdecl;
-
-
-   (**
-    * Sets the ordering mode to either order or unordered.
-    *
-    * \param context The XQC_StaticContext that this function pointer is a member of
-    * \param mode The ordering_mode_t to set in the given context.
-    *
-    * \retval ::XQC_NO_ERROR
-    * \retval ::XQC_INTERNAL_ERROR
-    *)
-    set_ordering_mode: function(context: XQC_StaticContext; mode: ordering_mode_t): XQUERY_ERROR; extdecl;
-
-
-   (**
-    * Returns the ordering mode that is set in the given static context.
-    *
-    * \param context The XQC_StaticContext that this function pointer is a member of
-    * \param[out] mode The ordering_mode_t that is set in the given context.
-    *
-    * \retval ::XQC_NO_ERROR
-    * \retval ::XQC_INTERNAL_ERROR
-    *)
-    get_ordering_mode: function(context: XQC_StaticContext; out mode: ordering_mode_t): XQUERY_ERROR; extdecl;
-
-
-   (**
-    * Sets the default order mode for empty sequences to either empty_least or
-    * empty_greatest
-    *
-    * \param context The XQC_StaticContext that this function pointer is a member of
-    * \param mode The order_empty_mode_t to set in the given context.
-    *
-    * \retval ::XQC_NO_ERROR
-    * \retval ::XQC_INTERNAL_ERROR
-    *)
-    set_default_order_empty_sequences: function(context: XQC_StaticContext; mode: order_empty_mode_t): XQUERY_ERROR; extdecl;
-
-
-   (**
-    * Returns the default order mode for empty sequences that is set in the given
-    * static context.
-    *
-    * \param context The XQC_StaticContext that this function pointer is a member of
-    * \param[out] mode The order_empty_mode_t that is set in the given context.
-    *
-    * \retval ::XQC_NO_ERROR
-    * \retval ::XQC_INTERNAL_ERROR
-    *)
-    get_default_order_empty_sequences: function(context: XQC_StaticContext; out mode: order_empty_mode_t): XQUERY_ERROR; extdecl;
-
-
-   (**
-    * Sets the boundary space policy to either preserve_space or strip_space.
-    *
-    * \param context The XQC_StaticContext that this function pointer is a member of
-    * \param mode The boundary_space_mode_t to set in the given context.
-    *
-    * \retval ::XQC_NO_ERROR
-    * \retval ::XQC_INTERNAL_ERROR
-    *)
-    set_boundary_space_policy: function(context: XQC_StaticContext; mode: boundary_space_mode_t): XQUERY_ERROR; extdecl;
-
-
-   (**
-    * Returns the boundary space policy that is set in the given static context.
-    *
-    * \param context The XQC_StaticContext that this function pointer is a member of
-    * \param[out] mode The boundary_space_mode_t that is set in the given context.
-    *
-    * \retval ::XQC_NO_ERROR
-    * \retval ::XQC_INTERNAL_ERROR
-    *)
-    get_boundary_space_policy: function(context: XQC_StaticContext; out mode: boundary_space_mode_t): XQUERY_ERROR; extdecl;
-
-
-   (**
-    * Sets the copy namespace mode which consists of the preserve and the inherit mode.
-    *
-    * \param context The XQC_StaticContext that this function pointer is a member of
-    * \param preserve The preserve_mode_t to set in the given context.
-    * \param inherit The inherit_mode_t to set in the given context.
-    *
-    * \retval ::XQC_NO_ERROR
-    * \retval ::XQC_INTERNAL_ERROR
-    *)
-    set_copy_ns_mode: function(context: XQC_StaticContext; mode: preserve_mode_t; inherit: inherit_mode_t): XQUERY_ERROR; extdecl;
-
-
-   (**
-    * Returns the copy namespace mode as a pair consisting of the preserve and the inherit
-    * mode.
-    *
-    * \param context The XQC_StaticContext that this function pointer is a member of
-    * \param[out] preserve The preserve_mode_t that is set in the given context.
-    * \param[out] inherit The inherit_mode_t that is set in the given context.
-    *
-    * \retval ::XQC_NO_ERROR
-    * \retval ::XQC_INTERNAL_ERROR
-    *)
-    get_copy_ns_mode: function(context: XQC_StaticContext; out mode: preserve_mode_t; out inherit: inherit_mode_t): XQUERY_ERROR; extdecl;
-
-
-   (**
-    * Sets the base uri in the given static context.
-    *
-    * \param context The XQC_StaticContext that this function pointer is a member of
-    * \param base_uri The base uri to set in the given context.
-    *
-    * \retval ::XQC_NO_ERROR
-    * \retval ::XQC_INTERNAL_ERROR
-    *)
-    set_base_uri: function(context: XQC_StaticContext; const base_uri: pchar): XQUERY_ERROR; extdecl;
-
-
-   (**
-    * Returns the base uri that is set in the given static context.
-    * The returned base uri is only valid as long as the corresponding static context
-    * is valid.
-    *
-    * \param context The XQC_StaticContext that this function pointer is a member of
-    * \param[out] base_uri The base uri that is set in the given context.
-    *
-    * \retval ::XQC_NO_ERROR
-    * \retval ::XQC_INTERNAL_ERROR
-    *)
-    get_base_uri: function(context: XQC_StaticContext; out base_uri: pchar): XQUERY_ERROR; extdecl;
-
-
-    (**
-     * Register an external function that can be called within a query.
-     * One external function consists of three function parameters, i.e. init, next, and release.
-     *
-     * \param context The XQC_StaticContext that this function pointer is a member of
-     * \param uri The URI of the external function to add.
-     * \param localname The localname of the function to add.
-     * \param init A callback function pointer that is called once when the external function
-     *             is initialized. The init function gets the global_user_data pointer
-     *             as parameter.
-     * \param next A callback function pointer that is called each time the corresponding
-     *             XQuery function is executed.
-     * \param release A callback function pointer that is called once when the external function
-     *                is deinitialized.
-     * \param global_user_data User specific data that is passed to the init function as a parameter.
-     *
-     * \retval ::XQC_NO_ERROR
-     * \retval ::API0019_FUNCTION_ALREADY_REGISTERED,
-     * \retval ::XQC_INTERNAL_ERROR
-     *)
-    register_external_function: function(context: XQC_StaticContext; const uri, localname: pchar; init: external_function_init;
-      next: external_function_next; release: external_function_release; global_user_data: pointer): XQUERY_ERROR; extdecl;
-
-
-   (**
-    * Called to free the resources associated with the XQC_StaticContext.
-    *
-    * \param context The XQC_StaticContext that this function pointer is a member of
-    *)
-    free: procedure(context: XQC_StaticContext); extdecl;
-
-
-    (**
-     * for internal use only
-     *)
-    data: Pointer;
-  end;
-
-
-(**
- * An object of the type ::XQC_DynamicContext contains the information that is available at the 
- * time the query is executed.  It contains the information that is defined in the %XQuery 
- * specification (see http://www.w3.org/TR/xquery/#eval_context).
- * An instance of this struct can be retrieved by calling the <code>get_dynamic_context</code> function
- * of an ::XQC_Query object.
- *)
-  XQC_DynamicContext_s = record
-    (**
-     * Sets the context item to the given ::XQC_Item.
-     *
-     * \param context The XQC_DynamicContext that this function pointer is a member of
-     * \param value The XQC_Item for the context item.
-     *
-     * \retval ::XQC_NO_ERROR
-     * \retval ::XQC_INTERNAL_ERROR
-     *)
-    set_context_item: function(context: XQC_DynamicContext; value: XQC_Item): XQUERY_ERROR; extdecl;
-
-
-    (**
-     * Sets the context item to the document given by the FILE pointer.
-     * The provided document is accessible by the provided doc_uri.
-     *
-     * \param context The XQC_DynamicContext that this function pointer is a member of
-     * \param doc_uri The URI referencing the given document
-     * \param document The document to which the context item should be set as a FILE pointer.
-     *
-     * \retval ::XQC_NO_ERROR
-     * \retval ::XQP0016_LOADER_IO_ERROR,
-     * \retval ::XQP0017_LOADER_PARSING_ERROR,
-     * \retval ::XQC_INTERNAL_ERROR
-     *)
-    set_context_document: function(context: XQC_DynamicContext; const doc_uri: pchar; document: pfile): XQUERY_ERROR; extdecl;
-
-
-    (**
-     * Sets the external variable to the value given.
-     *
-     * \param context The XQC_DynamicContext that this function pointer is a member of
-     * \param qname The qname of the external variable to set
-     * \param value The XQC_Item value for the variable.
-     *
-     * \retval ::XQC_NO_ERROR
-     * \retval ::XQC_INTERNAL_ERROR
-     *)
-    set_variable_item: function(context: XQC_DynamicContext; const qname: pchar; value: XQC_Item): XQUERY_ERROR; extdecl;
-
-
-    (**
-     * Sets the external variable to the sequence given.
-     *
-     * \param context The XQC_DynamicContext that this function pointer is a member of
-     * \param qname The qname of the external variable to set
-     * \param value The XQC_Sequence value for the variable.
-     *
-     * \retval ::XQC_NO_ERROR
-     * \retval ::XQC_INTERNAL_ERROR
-     *)
-    set_variable_sequence: function(context: XQC_DynamicContext; const qname: pchar; value: XQC_Sequence): XQUERY_ERROR; extdecl;
-
-
-    (**
-     * Sets the external variable to the document given by the FILE pointer.
-     *
-     * \param context The XQC_DynamicContext that this function pointer is a member of
-     * \param var_qname The qname of the external variable to set
-     * \param doc_uri The URI referencing the given document
-     * \param document The document to which the context item should be set as a FILE pointer.
-     *
-     * \retval ::XQC_NO_ERROR
-     * \retval ::XQP0016_LOADER_IO_ERROR,
-     * \retval ::XQP0017_LOADER_PARSING_ERROR,
-     * \retval ::XQC_INTERNAL_ERROR
-     *)
-    set_variable_document: function(context: XQC_DynamicContext; const var_qname, doc_uri: pchar; document: pfile): XQUERY_ERROR; extdecl;
-
-
-    (**
-     * Sets the implicit timezone parameter.
-     *
-     * \param context The XQC_DynamicContext that this function pointer is a member of
-     * \param timezone The implicit timezone to set
-     *
-     * \retval ::XQC_NO_ERROR
-     * \retval ::XQC_INTERNAL_ERROR
-     *)
-    set_implicit_timezone: function(context: XQC_DynamicContext; timezone: cint): XQUERY_ERROR; extdecl;
-
-
-    (**
-     * Defines the value of the default collection that is used when calling the
-     * fn:collection function without a parameter.
-     *
-     * \param context The XQC_DynamicContext that this function pointer is a member of
-     * \param collection_uri the URI of the collection used by the fn:collection function.
-     * \retval ::XQC_NO_ERROR
-     * \retval ::XQC_INTERNAL_ERROR
-     *)
-    set_default_collection: function(context: XQC_DynamicContext; collection_uri: XQC_Item): XQUERY_ERROR; extdecl;
-
-
-    (**
-     * Called to free the resources associated with the XQC_DynamicContext.
-     *
-     * \param context The XQC_DynamicContext that this function pointer is a member of
-     *)
-    free: procedure(context: XQC_DynamicContext); extdecl;
-
-
-    (**
-     * for internal use only
-     *)
-    data: pointer;
-  end;
-
-
-(**
- * This struct is Zorba's representation of an Item as defined in the
- * XQuery 1.0 and XPath 2.0 Data Model (XDM); see http://www.w3.org/TR/xpath-datamodel/. 
- * 
- * Instances of the XDM are a sequence, i.e. an ordered collection of zero or more items.
- * In the Zorba API, a sequence is represented by the XQC_Sequence struct.
- *
- * The Item class is the union of all XQuery node and atomic types.
- * The class provides functions to access the information of an Item. Note that not
- * all functions are defined on every Item kind. If a function is called on an Item that
- * does not provide the function called, an XQP0024_FUNCTION_NOT_IMPLEMENTED_FOR_ITEMTYPE error
- * is raised.
- *
- * A new atomic Item can be created using the ItemFactory. A new node Item should be created
- * by the result of a query.
- *)
-  XQC_Item_s = record
-    (**
-     * The string value is the string that is extracted by calling the fn:string function
-     * on the Item (see http://www.w3.org/TR/xpath-functions/#func-string).
-     * Note that this function is available for all types of Items.
-     *
-     * \param item The XQC_Item that this function pointer is a member of
-     * \param[out] string_value The string-value of the given item.
-     *             This string is valid as long as the given item is valid.
-     *
-     * \retval ::XQC_NO_ERROR
-     * \retval ::XQP0019_INTERNAL_ERROR
-     * \retval ::XQP0024_FUNCTION_NOT_IMPLEMENTED_FOR_ITEMTYPE
-     *)
-    string_value: function(item: XQC_Item; out string_value: pchar): XQUERY_ERROR; extdecl;
-
-
-    (**
-     * Get the (optional) value of a QName's prefix.
-     * Note that this function is only available for Items of type QName.
-     *
-     * \param item The XQC_Item that this function pointer is a member of
-     * \param[out] prefix The prefix of the given QName item.
-     *             This string is valid as long as the given item is valid.
-     *
-     * \retval ::XQC_NO_ERROR
-     * \retval ::XQP0019_INTERNAL_ERROR
-     * \retval ::XQP0024_FUNCTION_NOT_IMPLEMENTED_FOR_ITEMTYPE
-     *)
-    prefix: function(item: XQC_Item; out prefix: pchar): XQUERY_ERROR; extdecl;
-
-
-    (**
-     * Get the (optional) value of a QName's namespace.
-     * Note that this function is only available for Items of type QName.
-     *
-     * \param item The XQC_Item that this function pointer is a member of
-     * \param[out] namespace The namespace of the given QName item.
-     *             This string is valid as long as the given item is valid.
-     *
-     * \retval ::XQC_NO_ERROR
-     * \retval ::XQP0019_INTERNAL_ERROR
-     * \retval ::XQP0024_FUNCTION_NOT_IMPLEMENTED_FOR_ITEMTYPE
-     *)
-    ns: function(item: XQC_Item; out ns: pchar): XQUERY_ERROR; extdecl;
-
-
-    (**
-     * Get the value of a QName's localname.
-     * Note that this function is only available for Items of type QName.
-     *
-     * \param item The XQC_Item that this function pointer is a member of
-     * \param[out] localname The localname of the given QName item.
-     *             This string is valid as long as the given item is valid.
-     *
-     * \retval ::XQC_NO_ERROR
-     * \retval ::XQP0019_INTERNAL_ERROR
-     * \retval ::XQP0024_FUNCTION_NOT_IMPLEMENTED_FOR_ITEMTYPE
-     *)
-    localname: function(item: XQC_Item; out local_name: pchar): XQUERY_ERROR; extdecl;
-
-
-    (**
-     * Get the bool value of the boolean Item.
-     * Note that this function is only available for Items of type boolean.
-     *
-     * \param item The XQC_Item that this function pointer is a member of
-     * \param[out] bool_value 1 if the boolean value of the given item is true, 0 otherwise.
-     *
-     * \retval ::XQC_NO_ERROR
-     * \retval ::XQP0019_INTERNAL_ERROR
-     * \retval ::XQP0024_FUNCTION_NOT_IMPLEMENTED_FOR_ITEMTYPE
-     *)
-    boolean_value: function(item: XQC_Item; out bool_value: cint): XQUERY_ERROR; extdecl;
-
-
-    (**
-     * Check if the value of the Item is not a number (NaN).
-     * Note that this function is implemented for all item types but may only return
-     * 1 for a numeric item (e.g. Double or Float).
-     *
-     * \param item The XQC_Item that this function pointer is a member of
-     * \param[out] is_nan 1 if the given item is not a number, 0 otherwise.
-     *
-     * \retval ::XQC_NO_ERROR
-     * \retval ::XQP0019_INTERNAL_ERROR
-     * \retval ::XQP0024_FUNCTION_NOT_IMPLEMENTED_FOR_ITEMTYPE
-     *)
-    nan: function(item: XQC_Item; out is_nan: cint): XQUERY_ERROR; extdecl;
-
-
-    (**
-      Check if the value of the Item is positive or negative infinity.
-     * Note that this function is only available for numeric items (e.g. Double or Float).
-     *
-     * \param item The XQC_Item that this function pointer is a member of
-     * \param[out] inf 1 if the given item is +/-INF, 0 otherwise.
-     *
-     * \retval ::XQC_NO_ERROR
-     * \retval ::XQP0019_INTERNAL_ERROR
-     * \retval ::XQP0024_FUNCTION_NOT_IMPLEMENTED_FOR_ITEMTYPE
-     *)
-    pos_or_neg_inf: function(item: XQC_Item; out pos_or_neg_inf: cint): XQUERY_ERROR; extdecl;
-
-
-    (**
-     * Called to free the resources associated with the XQC_Item.
-     *
-     * \param item The XQC_Item that this function pointer is a member of
-     *)
-    free: procedure(item: XQC_Item); extdecl;
-
-
-    (**
-     * for internal use only
-     *)
-    data: pointer;
-  end;
-
-
-(**
- * An instance of this class can be obtained by calling <code>item_factory</code> function
- * of an ::XQC_Implementation object.
- *
- * Each <code>create_XXX</code> function of this struct creates an ::XQC_Item of an XML Schema item.
- * Each of the functions takes either NULL or a valid XQC_Item wrapper. The latter is created
- * by calling <code>XQC_Implementation::create_item</code>. In both cases, the user is responsible 
- * for freeing the object by calling the XQC_Item::free() function.
- *)
-  XQC_ItemFactory_s = record
-    (**
-     * Creates a String Item see [http://www.w3.org/TR/xmlschema-2/#string].
-     *
-     * \param factory The XQC_ItemFactory that this function pointer is a member of
-     * \param str The string as a char pointer.
-     * \param[out] item The item to create. This can either be a wrapper created using
-     *                 ::XQC_ItemFactory::create_item or a pointer initialized to 0.
-     *
-     * \retval ::XQC_NO_ERROR
-     * \retval ::XQP0019_INTERNAL_ERROR
-     * \retval ::XQP0025_COULD_NOT_CREATE_ITEM
-     *)
-    create_string: function(factory: XQC_ItemFactory; const str: pchar; out item: XQC_Item): XQUERY_ERROR; extdecl;
-
-
-    (**
-     * Creates an AnyURI Item see [http://www.w3.org/TR/xmlschema-2/#anyURI]
-     *
-     * \param factory The XQC_ItemFactory that this function pointer is a member of
-     * \param str The uri as a char pointer.
-     * \param[out] item The item to create. This can either be a wrapper created using
-     *                 ::XQC_ItemFactory::create_item or a pointer initialized to 0.
-     *
-     * \retval ::XQC_NO_ERROR
-     * \retval ::XQP0019_INTERNAL_ERROR
-     * \retval ::XQP0025_COULD_NOT_CREATE_ITEM
-     *)
-    create_anyuri: function(factory: XQC_ItemFactory; const str: pchar; out item: XQC_Item): XQUERY_ERROR; extdecl;
-
-
-    (**
-     * Creates a QName Item see [http://www.w3.org/TR/xmlschema-2/#QName]
-     *
-     * \param factory The XQC_ItemFactory that this function pointer is a member of
-     * \param str The uri as a char pointer.
-     * \param localname The localname as a char pointer.
-     * \param[out] item The item to create. This can either be a wrapper created using
-     *                 ::XQC_ItemFactory::create_item or a pointer initialized to 0.
-     *
-     * \retval ::XQC_NO_ERROR
-     * \retval ::XQP0019_INTERNAL_ERROR
-     * \retval ::XQP0025_COULD_NOT_CREATE_ITEM
-     *)
-    create_qname2: function(factory: XQC_ItemFactory; const uri, localname: pchar; out item: XQC_Item): XQUERY_ERROR; extdecl;
-
-
-    (**
-     * Creates a QName Item see [http://www.w3.org/TR/xmlschema-2/#QName]
-     *
-     * \param factory The XQC_ItemFactory that this function pointer is a member of
-     * \param str The uri as a char pointer.
-     * \param prefix The prefix as a char pointer.
-     * \param localname The localname as a char pointer.
-     * \param[out] item The item to create. This can either be a wrapper created using
-     *                 ::XQC_ItemFactory::create_item or a pointer initialized to 0.
-     *
-     * \retval ::XQC_NO_ERROR
-     * \retval ::XQP0019_INTERNAL_ERROR
-     * \retval ::XQP0025_COULD_NOT_CREATE_ITEM
-     *)
-    create_qname3: function(factory: XQC_ItemFactory; const uri, prefix, localname: pchar; out item: XQC_Item): XQUERY_ERROR; extdecl;
-
-
-    (**
-     * Creates a Boolean Item see [http://www.w3.org/TR/xmlschema-2/#bool]
-     *
-     * \param factory The XQC_ItemFactory that this function pointer is a member of
-     * \param boolean 0 for a boolean <code>false</code> boolean item, 1 otherwise.
-     * \param[out] item The item to create. This can either be a wrapper created using
-     *                 ::XQC_ItemFactory::create_item or a pointer initialized to 0.
-     *
-     * \retval ::XQC_NO_ERROR
-     * \retval ::XQP0019_INTERNAL_ERROR
-     * \retval ::XQP0025_COULD_NOT_CREATE_ITEM
-     *)
-    create_boolean: function(factory: XQC_ItemFactory; boolean: cint; out item: XQC_Item): XQUERY_ERROR; extdecl;
-
-
-    (**
-     * Creates a NCName Item see [http://www.w3.org/TR/xmlschema-2/#NCName]
-     *
-     * \param factory The XQC_ItemFactory that this function pointer is a member of
-     * \param ncname The NCName as a char pointer.
-     * \param[out] item The item to create. This can either be a wrapper created using
-     *                 ::XQC_ItemFactory::create_item or a pointer initialized to 0.
-     *
-     * \retval ::XQC_NO_ERROR
-     * \retval ::XQP0019_INTERNAL_ERROR
-     * \retval ::XQP0025_COULD_NOT_CREATE_ITEM
-     *)
-    create_ncname: function(factory: XQC_ItemFactory; const ncname: pchar; out item: XQC_Item): XQUERY_ERROR; extdecl;
-
-
-    (**
-     * Creates a Base64Binary Item see [http://www.w3.org/TR/xmlschema-2/#base64Binary]
-     *
-     * \param factory The XQC_ItemFactory that this function pointer is a member of
-     * \param binary_data The binary data as a char pointer.
-     * \param letter The length of the binary data.
-     * \param[out] item The item to create. This can either be a wrapper created using
-     *                 ::XQC_ItemFactory::create_item or a pointer initialized to 0.
-     *
-     * \retval ::XQC_NO_ERROR
-     * \retval ::XQP0019_INTERNAL_ERROR
-     * \retval ::XQP0025_COULD_NOT_CREATE_ITEM
-     *)
-    create_base64binary: function(factory: XQC_ItemFactory; const binary_data: pchar; length: csize_t; out item: XQC_Item): XQUERY_ERROR; extdecl;
-
-
-    (**
-     * Creates a Decimal Item see [http://www.w3.org/TR/xmlschema-2/#decimal]
-     *
-     * \param factory The XQC_ItemFactory that this function pointer is a member of
-     * \param value The value as a doule
-     * \param[out] item The item to create. This can either be a wrapper created using
-     *                 ::XQC_ItemFactory::create_item or a pointer initialized to 0.
-     *
-     * \retval ::XQC_NO_ERROR
-     * \retval ::XQP0019_INTERNAL_ERROR
-     * \retval ::XQP0025_COULD_NOT_CREATE_ITEM
-     *)
-    create_decimal: function(factory: XQC_ItemFactory; value: cdouble; out item: XQC_Item): XQUERY_ERROR; extdecl;
-
-
-    (**
-     * Creates a Decimal Item see [http://www.w3.org/TR/xmlschema-2/#decimal]
-     *
-     * \param factory The XQC_ItemFactory that this function pointer is a member of
-     * \param value The value as a char pointer.
-     * \param[out] item The item to create. This can either be a wrapper created using
-     *                 ::XQC_ItemFactory::create_item or a pointer initialized to 0.
-     *
-     * \retval ::XQC_NO_ERROR
-     * \retval ::XQP0019_INTERNAL_ERROR
-     * \retval ::XQP0025_COULD_NOT_CREATE_ITEM
-     *)
-    create_decimal_char: function(factory: XQC_ItemFactory; const value: pchar; out item: XQC_Item): XQUERY_ERROR; extdecl;
-
-
-    (**
-     * Creates an Integer Item see [http://www.w3.org/TR/xmlschema-2/#integer]
-     *
-     * \param factory The XQC_ItemFactory that this function pointer is a member of
-     * \param integer_value The value as a long long.
-     * \param[out] item The item to create. This can either be a wrapper created using
-     *                 ::XQC_ItemFactory::create_item or a pointer initialized to 0.
-     *
-     * \retval ::XQC_NO_ERROR
-     * \retval ::XQP0019_INTERNAL_ERROR
-     * \retval ::XQP0025_COULD_NOT_CREATE_ITEM
-     *)
-    create_integer: function(factory: XQC_ItemFactory; const integer_value: clonglong; out item: XQC_Item): XQUERY_ERROR; extdecl;
-
-
-    (**
-     * Creates an Integer Item see [http://www.w3.org/TR/xmlschema-2/#integer]
-     *
-     * \param factory The XQC_ItemFactory that this function pointer is a member of
-     * \param integer_value The value as a char pointer.
-     * \param[out] item The item to create. This can either be a wrapper created using
-     *                 ::XQC_ItemFactory::create_item or a pointer initialized to 0.
-     *
-     * \retval ::XQC_NO_ERROR
-     * \retval ::XQP0019_INTERNAL_ERROR
-     * \retval ::XQP0025_COULD_NOT_CREATE_ITEM
-     *)
-    create_integer_char: function(factory: XQC_ItemFactory; const integer_value: pchar; out item: XQC_Item): XQUERY_ERROR; extdecl;
-
-
-    (**
-     * Creates a Long Item see [http://www.w3.org/TR/xmlschema-2/#long]
-     *
-     * \param factory The XQC_ItemFactory that this function pointer is a member of
-     * \param long_value The value as a long long.
-     * \param[out] item The item to create. This can either be a wrapper created using
-     *                 ::XQC_ItemFactory::create_item or a pointer initialized to 0.
-     *
-     * \retval ::XQC_NO_ERROR
-     * \retval ::XQP0019_INTERNAL_ERROR
-     * \retval ::XQP0025_COULD_NOT_CREATE_ITEM
-     *)
-    create_long: function(factory: XQC_ItemFactory; const long_value: clonglong; out item: XQC_Item): XQUERY_ERROR; extdecl;
-
-
-    (**
-     * Creates a Int Item see [http://www.w3.org/TR/xmlschema-2/#int]
-     *
-     * \param factory The XQC_ItemFactory that this function pointer is a member of
-     * \param int_value The value as an int.
-     * \param[out] item The item to create. This can either be a wrapper created using
-     *                 ::XQC_ItemFactory::create_item or a pointer initialized to 0.
-     *
-     * \retval ::XQC_NO_ERROR
-     * \retval ::XQP0019_INTERNAL_ERROR
-     * \retval ::XQP0025_COULD_NOT_CREATE_ITEM
-     *)
-    create_int: function(factory: XQC_ItemFactory; const int_value: cint; out item: XQC_Item): XQUERY_ERROR; extdecl;
-
-
-    (**
-     * Creates a Short Item see [http://www.w3.org/TR/xmlschema-2/#short]
-     *
-     * \param factory The XQC_ItemFactory that this function pointer is a member of
-     * \param short_value The value as a short.
-     * \param[out] item The item to create. This can either be a wrapper created using
-     *                 ::XQC_ItemFactory::create_item or a pointer initialized to 0.
-     *
-     * \retval ::XQC_NO_ERROR
-     * \retval ::XQP0019_INTERNAL_ERROR
-     * \retval ::XQP0025_COULD_NOT_CREATE_ITEM
-     *)
-    create_short: function(factory: XQC_ItemFactory; const short_value: cshort; out item: XQC_Item): XQUERY_ERROR; extdecl;
-
-
-    (**
-     * Creates a Byte Item see [http://www.w3.org/TR/xmlschema-2/#byte]
-     *
-     * \param factory The XQC_ItemFactory that this function pointer is a member of
-     * \param byte_value The byte value as a char.
-     * \param[out] item The item to create. This can either be a wrapper created using
-     *                 ::XQC_ItemFactory::create_item or a pointer initialized to 0.
-     *
-     * \retval ::XQC_NO_ERROR
-     * \retval ::XQP0019_INTERNAL_ERROR
-     * \retval ::XQP0025_COULD_NOT_CREATE_ITEM
-     *)
-    create_byte: function(factory: XQC_ItemFactory; const byte_value: cchar; out item: XQC_Item): XQUERY_ERROR; extdecl;
-
-
-    (**
-     * Creates a Date Item see [http://www.w3.org/TR/xmlschema-2/#date]
-     *
-     * \param factory The XQC_ItemFactory that this function pointer is a member of
-     * \param date_value The date value as a char pointer.
-     * \param[out] item The item to create. This can either be a wrapper created using
-     *                 ::XQC_ItemFactory::create_item or a pointer initialized to 0.
-     *
-     * \retval ::XQC_NO_ERROR
-     * \retval ::XQP0019_INTERNAL_ERROR
-     * \retval ::XQP0025_COULD_NOT_CREATE_ITEM
-     *)
-    create_date_char: function(factory: XQC_ItemFactory; const date_value: pchar; out item: XQC_Item): XQUERY_ERROR; extdecl;
-
-
-    (**
-     * Creates a Date Item see [http://www.w3.org/TR/xmlschema-2/#date]
-     *
-     * \param factory The XQC_ItemFactory that this function pointer is a member of
-     * \param year The year value as a short.
-     * \param month The month value as a short.
-     * \param day The day value as a short.
-     * \param[out] item The item to create. This can either be a wrapper created using
-     *                 ::XQC_ItemFactory::create_item or a pointer initialized to 0.
-     *
-     * \retval ::XQC_NO_ERROR
-     * \retval ::XQP0019_INTERNAL_ERROR
-     * \retval ::XQP0025_COULD_NOT_CREATE_ITEM
-     *)
-    create_date: function(factory: XQC_ItemFactory; const year, month, day: cshort; out item: XQC_Item): XQUERY_ERROR; extdecl;
-
-
-    (**
-     * Creates a DateTime Item see [http://www.w3.org/TR/xmlschema-2/#dateTime]
-     *
-     * \param factory The XQC_ItemFactory that this function pointer is a member of
-     * \param year The year value as a short.
-     * \param month The month value as a short.
-     * \param day The day value as a short.
-     * \param hour The hour value as a short.
-     * \param minute The minute value as a short.
-     * \param seconds The seconds value as a short.
-     * \param timezone_hours The timezone as a short.
-     * \param[out] item The item to create. This can either be a wrapper created using
-     *                 ::XQC_ItemFactory::create_item or a pointer initialized to 0.
-     *
-     * \retval ::XQC_NO_ERROR
-     * \retval ::XQP0019_INTERNAL_ERROR
-     * \retval ::XQP0025_COULD_NOT_CREATE_ITEM
-     *)
-    create_datetime: function(factory: XQC_ItemFactory; const year, month, day, hour, minute: cshort;
-      seconds: cdouble; timezone_hours: cshort; out item: XQC_Item): XQUERY_ERROR; extdecl;
-
-
-    (**
-     * Creates a DateTime Item see [http://www.w3.org/TR/xmlschema-2/#dateTime]
-     *
-     * \param factory The XQC_ItemFactory that this function pointer is a member of
-     * \param datetime_value The string representation of the datetime value as a char pointer
-     *                       (for example, 2002-10-10T12:00:00-05:00).
-     * \param[out] item The item to create. This can either be a wrapper created using
-     *                 ::XQC_ItemFactory::create_item or a pointer initialized to 0.
-     *
-     * \retval ::XQC_NO_ERROR
-     * \retval ::XQP0019_INTERNAL_ERROR
-     * \retval ::XQP0025_COULD_NOT_CREATE_ITEM
-     *)
-    create_datetime_char: function(factory: XQC_ItemFactory; const datetime_value: pchar; out item: XQC_Item): XQUERY_ERROR; extdecl;
-
-
-    (**
-     * Creates a Double Item see [http://www.w3.org/TR/xmlschema-2/#double]
-     *
-     * \param factory The XQC_ItemFactory that this function pointer is a member of
-     * \param[out] item The item to create. This can either be a wrapper created using
-     *                 ::XQC_ItemFactory::create_item or a pointer initialized to 0.
-     *
-     * \retval ::XQC_NO_ERROR
-     * \retval ::XQP0019_INTERNAL_ERROR
-     * \retval ::XQP0025_COULD_NOT_CREATE_ITEM
-     *)
-    create_double: function(factory: XQC_ItemFactory; const value: cdouble; out item: XQC_Item): XQUERY_ERROR; extdecl;
-
-
-    (**
-     * Creates a Double Item see [http://www.w3.org/TR/xmlschema-2/#double]
-     *
-     * \param factory The XQC_ItemFactory that this function pointer is a member of
-     * \param value The value as a char pointer.
-     * \param[out] item The item to create. This can either be a wrapper created using
-     *                 ::XQC_ItemFactory::create_item or a pointer initialized to 0.
-     *
-     * \retval ::XQC_NO_ERROR
-     * \retval ::XQP0019_INTERNAL_ERROR
-     * \retval ::XQP0025_COULD_NOT_CREATE_ITEM
-     *)
-    create_double_char: function(factory: XQC_ItemFactory; const value: pchar; out item: XQC_Item): XQUERY_ERROR; extdecl;
-
-
-    (**
-     * Creates a Duration Item see [http://www.w3.org/TR/xmlschema-2/#duration]
-     *
-     * \param factory The XQC_ItemFactory that this function pointer is a member of
-     * \param year The year value as a short.
-     * \param month The month value as a short.
-     * \param day The day value as a short.
-     * \param hour The hour value as a short.
-     * \param minute The minute value as a short.
-     * \param seconds The seconds value as a short.
-     * \param[out] item The item to create. This can either be a wrapper created using
-     *                 ::XQC_ItemFactory::create_item or a pointer initialized to 0.
-     *
-     * \retval ::XQC_NO_ERROR
-     * \retval ::XQP0019_INTERNAL_ERROR
-     * \retval ::XQP0025_COULD_NOT_CREATE_ITEM
-     *)
-    create_duration: function(factory: XQC_ItemFactory; const year, month, day, hour, minute: cshort;
-      seconds: cdouble; out item: XQC_Item): XQUERY_ERROR; extdecl;
-
-
-    (**
-     * Creates a Float Item see [http://www.w3.org/tr/xmlschema-2/#float]
-     *
-     * \param factory The XQC_ItemFactory that this function pointer is a member of
-     * \param value The float value as a char pointer.
-     * \param[out] item The item to create. This can either be a wrapper created using
-     *                 ::XQC_ItemFactory::create_item or a pointer initialized to 0.
-     *
-     * \retval ::XQC_NO_ERROR
-     * \retval ::XQP0019_INTERNAL_ERROR
-     * \retval ::XQP0025_COULD_NOT_CREATE_ITEM
-     *)
-    create_float: function(factory: XQC_ItemFactory; const value: pchar; out item: XQC_Item): XQUERY_ERROR; extdecl;
-
-
-    (**
-     * Creates a gDay Item see [http://www.w3.org/TR/xmlschema-2/#gDay]
-     *
-     * \param factory The XQC_ItemFactory that this function pointer is a member of
-     * \param day The day value as a short.
-     * \param[out] item The item to create. This can either be a wrapper created using
-     *                 ::XQC_ItemFactory::create_item or a pointer initialized to 0.
-     *
-     * \retval ::XQC_NO_ERROR
-     * \retval ::XQP0019_INTERNAL_ERROR
-     * \retval ::XQP0025_COULD_NOT_CREATE_ITEM
-     *)
-    create_gday: function(factory: XQC_ItemFactory; day: cshort; out item: XQC_Item): XQUERY_ERROR; extdecl;
-
-
-    (**
-     * Creates a gMonth Item see [http://www.w3.org/TR/xmlschema-2/#gMonth]
-     *
-     * \param factory The XQC_ItemFactory that this function pointer is a member of
-     * \param month The month value as a short.
-     * \param[out] item The item to create. This can either be a wrapper created using
-     *                 ::XQC_ItemFactory::create_item or a pointer initialized to 0.
-     *
-     * \retval ::XQC_NO_ERROR
-     * \retval ::XQP0019_INTERNAL_ERROR
-     * \retval ::XQP0025_COULD_NOT_CREATE_ITEM
-     *)
-    create_gmonth: function(factory: XQC_ItemFactory; month: cshort; out item: XQC_Item): XQUERY_ERROR; extdecl;
-
-
-    (**
-     * Creates a gMonthDay Item see [http://www.w3.org/TR/xmlschema-2/#gMonthDay]
-     *
-     * \param factory The XQC_ItemFactory that this function pointer is a member of
-     * \param month The month value as a short.
-     * \param day The day value as a short.
-     * \param[out] item The item to create. This can either be a wrapper created using
-     *                 ::XQC_ItemFactory::create_item or a pointer initialized to 0.
-     *
-     * \retval ::XQC_NO_ERROR
-     * \retval ::XQP0019_INTERNAL_ERROR
-     * \retval ::XQP0025_COULD_NOT_CREATE_ITEM
-     *)
-    create_gmonthday: function(factory: XQC_ItemFactory; month, day: cshort; out item: XQC_Item): XQUERY_ERROR; extdecl;
-
-
-    (**
-     * Creates a gYear Item see [http://www.w3.org/TR/xmlschema-2/#gYear]
-     *
-     * \param factory The XQC_ItemFactory that this function pointer is a member of
-     * \param year The year value as a short.
-     * \param[out] item The item to create. This can either be a wrapper created using
-     *                 ::XQC_ItemFactory::create_item or a pointer initialized to 0.
-     *
-     * \retval ::XQC_NO_ERROR
-     * \retval ::XQP0019_INTERNAL_ERROR
-     * \retval ::XQP0025_COULD_NOT_CREATE_ITEM
-     *)
-    create_gyear: function(factory: XQC_ItemFactory; year: cshort; out item: XQC_Item): XQUERY_ERROR; extdecl;
-
-
-    (**
-     * Creates a gYearMonth Item see [http://www.w3.org/TR/xmlschema-2/#gYearMonth]
-     *
-     * \param factory The XQC_ItemFactory that this function pointer is a member of
-     * \param year The year value as a short.
-     * \param month The month value as a short.
-     * \param[out] item The item to create. This can either be a wrapper created using
-     *                 ::XQC_ItemFactory::create_item or a pointer initialized to 0.
-     *
-     * \retval ::XQC_NO_ERROR
-     * \retval ::XQP0019_INTERNAL_ERROR
-     * \retval ::XQP0025_COULD_NOT_CREATE_ITEM
-     *)
-    create_gyearmonth: function(factory: XQC_ItemFactory; year, month: cshort; out item: XQC_Item): XQUERY_ERROR; extdecl;
-
-
-    (**
-     * Creates a HexBinary Item see [http://www.w3.org/TR/xmlschema-2/#hexBinary]
-     *
-     * \param factory The XQC_ItemFactory that this function pointer is a member of
-     * \param hex_data The hex data as a char pointer.
-     * \param size The size of the hex data.
-     * \param[out] item The item to create. This can either be a wrapper created using
-     *                 ::XQC_ItemFactory::create_item or a pointer initialized to 0.
-     *
-     * \retval ::XQC_NO_ERROR
-     * \retval ::XQP0019_INTERNAL_ERROR
-     * \retval ::XQP0025_COULD_NOT_CREATE_ITEM
-     *)
-    create_hexbinary: function(factory: XQC_ItemFactory; const hex_data: pchar; size: csize_t; out item: XQC_Item): XQUERY_ERROR; extdecl;
-
-
-    (**
-     * Creates a negativeInteger Item see [http://www.w3.org/TR/xmlschema-2/#negativeInteger]
-     *
-     * \param factory The XQC_ItemFactory that this function pointer is a member of
-     * \param value The negative integer as a long long value.
-     * \param[out] item The item to create. This can either be a wrapper created using
-     *                 ::XQC_ItemFactory::create_item or a pointer initialized to 0.
-     *
-     * \retval ::XQC_NO_ERROR
-     * \retval ::XQP0019_INTERNAL_ERROR
-     * \retval ::XQP0025_COULD_NOT_CREATE_ITEM
-     *)
-    create_negativeinteger: function(factory: XQC_ItemFactory; value: clonglong; out item: XQC_Item): XQUERY_ERROR; extdecl;
-
-
-    (**
-     * Creates a nonNegativeInteger Item see [http://www.w3.org/TR/xmlschema-2/#nonNegativeInteger]
-     *
-     * \param factory The XQC_ItemFactory that this function pointer is a member of
-     * \param value The non-negative integer as an unsigned long long value.
-     * \param[out] item The item to create. This can either be a wrapper created using
-     *                 ::XQC_ItemFactory::create_item or a pointer initialized to 0.
-     *
-     * \retval ::XQC_NO_ERROR
-     * \retval ::XQP0019_INTERNAL_ERROR
-     * \retval ::XQP0025_COULD_NOT_CREATE_ITEM
-     *)
-    create_nonnegativeinteger: function(factory: XQC_ItemFactory; value: culonglong; out item: XQC_Item): XQUERY_ERROR; extdecl;
-
-
-    (**
-     * Creates a nonPositiveInteger Item see [http://www.w3.org/TR/xmlschema-2/#nonPositiveInteger]
-     *
-     * \param factory The XQC_ItemFactory that this function pointer is a member of
-     * \param value The non-positive integer as a long long value.
-     * \param[out] item The item to create. This can either be a wrapper created using
-     *                 ::XQC_ItemFactory::create_item or a pointer initialized to 0.
-     *
-     * \retval ::XQC_NO_ERROR
-     * \retval ::XQP0019_INTERNAL_ERROR
-     * \retval ::XQP0025_COULD_NOT_CREATE_ITEM
-     *)
-    create_nonpositiveinteger: function(factory: XQC_ItemFactory; value: clonglong; out item: XQC_Item): XQUERY_ERROR; extdecl;
-
-
-    (**
-     * Creates a positiveInteger Item see [http://www.w3.org/TR/xmlschema-2/#positiveInteger]
-     *
-     * \param factory The XQC_ItemFactory that this function pointer is a member of
-     * \param value The positive integer as an unsigned long long value.
-     * \param[out] item The item to create. This can either be a wrapper created using
-     *                 ::XQC_ItemFactory::create_item or a pointer initialized to 0.
-     *
-     * \retval ::XQC_NO_ERROR
-     * \retval ::XQP0019_INTERNAL_ERROR
-     * \retval ::XQP0025_COULD_NOT_CREATE_ITEM
-     *)
-    create_positiveinteger: function(factory: XQC_ItemFactory; value: culonglong; out item: XQC_Item): XQUERY_ERROR; extdecl;
-
-
-    (**
-     * Creates a Time Item see [http://www.w3.org/TR/xmlschema-2/#time]
-     *
-     * \param factory The XQC_ItemFactory that this function pointer is a member of
-     * \param value The time as a char pointer.
-     * \param[out] item The item to create. This can either be a wrapper created using
-     *                 ::XQC_ItemFactory::create_item or a pointer initialized to 0.
-     *
-     * \retval ::XQC_NO_ERROR
-     * \retval ::XQP0019_INTERNAL_ERROR
-     * \retval ::XQP0025_COULD_NOT_CREATE_ITEM
-     *)
-    create_time_char: function(factory: XQC_ItemFactory; const value: pchar; out item: XQC_Item): XQUERY_ERROR; extdecl;
-
-
-    (**
-     * Creates a Time Item see [http://www.w3.org/TR/xmlschema-2/#time]
-     *
-     * \param factory The XQC_ItemFactory that this function pointer is a member of
-     * \param hour The hour as a short.
-     * \param minute The minute as a short.
-     * \param second The second as a short.
-     * \param[out] item The item to create. This can either be a wrapper created using
-     *                 ::XQC_ItemFactory::create_item or a pointer initialized to 0.
-     *
-     * \retval ::XQC_NO_ERROR
-     * \retval ::XQP0019_INTERNAL_ERROR
-     * \retval ::XQP0025_COULD_NOT_CREATE_ITEM
-     *)
-    create_time: function(factory: XQC_ItemFactory; hour, minute: cshort; second: cdouble; out item: XQC_Item): XQUERY_ERROR; extdecl;
-
-
-    (**
-     * Creates a Time Item see [http://www.w3.org/TR/xmlschema-2/#time]
-     *
-     * \param factory The XQC_ItemFactory that this function pointer is a member of
-     * \param hour The hour as a short.
-     * \param minute The minute as a short.
-     * \param second The second as a double.
-     * \param timezone_hours The timezone hours as a short.
-     * \param[out] item The item to create. This can either be a wrapper created using
-     *                 ::XQC_ItemFactory::create_item or a pointer initialized to 0.
-     *
-     * \retval ::XQC_NO_ERROR
-     * \retval ::XQP0019_INTERNAL_ERROR
-     * \retval ::XQP0025_COULD_NOT_CREATE_ITEM
-     *)
-    create_time_timezone: function(factory: XQC_ItemFactory; hour, minute: cshort; second: cdouble;
-      timezone_hours: cshort; out item: XQC_Item): XQUERY_ERROR; extdecl;
-
-
-    (**
-     * Creates an Unsigned Byte Item see [http://www.w3.org/TR/xmlschema-2/#unsignedByte]
-     *
-     * \param factory The XQC_ItemFactory that this function pointer is a member of
-     * \param value The unsigned byte value as an unsigned char.
-     * \param[out] item The item to create. This can either be a wrapper created using
-     *                 ::XQC_ItemFactory::create_item or a pointer initialized to 0.
-     *
-     * \retval ::XQC_NO_ERROR
-     * \retval ::XQP0019_INTERNAL_ERROR
-     * \retval ::XQP0025_COULD_NOT_CREATE_ITEM
-     *)
-    create_unsignedbyte: function(factory: XQC_ItemFactory; value: cuchar; out item: XQC_Item): XQUERY_ERROR; extdecl;
-
-
-    (**
-     * Creates an unsigned int Item see [http://www.w3.org/TR/xmlschema-2/#unsignedInt]
-     *
-     * \param factory The XQC_ItemFactory that this function pointer is a member of
-     * \param value The unsigned int value as an unsigned int.
-     * \param[out] item The item to create. This can either be a wrapper created using
-     *                 ::XQC_ItemFactory::create_item or a pointer initialized to 0.
-     *
-     * \retval ::XQC_NO_ERROR
-     * \retval ::XQP0019_INTERNAL_ERROR
-     * \retval ::XQP0025_COULD_NOT_CREATE_ITEM
-     *)
-    create_unsignedint: function(factory: XQC_ItemFactory; value: cuint; out item: XQC_Item): XQUERY_ERROR; extdecl;
-
-
-    (**
-     * Creates an unsignedLong Item see [http://www.w3.org/TR/xmlschema-2/#unsignedLong]
-     *
-     * \param factory The XQC_ItemFactory that this function pointer is a member of
-     * \param value The unsigned long value as an unsigned long long.
-     * \param[out] item The item to create. This can either be a wrapper created using
-     *                 ::XQC_ItemFactory::create_item or a pointer initialized to 0.
-     *
-     * \retval ::XQC_NO_ERROR
-     * \retval ::XQP0019_INTERNAL_ERROR
-     * \retval ::XQP0025_COULD_NOT_CREATE_ITEM
-     *)
-    create_unsignedlong: function(factory: XQC_ItemFactory; value: culonglong; out item: XQC_Item): XQUERY_ERROR; extdecl;
-
-
-    (**
-     * Creates a unsignedShort Item see [http://www.w3.org/TR/xmlschema-2/#unsignedShort]
-     *
-     * \param factory The XQC_ItemFactory that this function pointer is a member of
-     * \param value The unsigned short value as an unsigned short.
-     * \param[out] item The item to create. This can either be a wrapper created using
-     *                 ::XQC_ItemFactory::create_item or a pointer initialized to 0.
-     *
-     * \retval ::XQC_NO_ERROR
-     * \retval ::XQP0019_INTERNAL_ERROR
-     * \retval ::XQP0025_COULD_NOT_CREATE_ITEM
-     *)
-    create_unsignedshort: function(factory: XQC_ItemFactory; value: cushort; out item: XQC_Item): XQUERY_ERROR; extdecl;
-
-
-    (**
-     * Called to free the resources associated with the XQC_ItemFactory.
-     *
-     * \param factory The XQC_ItemFactory that this function pointer is a member of
-     * \param[out] item The item to create. This can either be a wrapper created using
-     *                 ::XQC_ItemFactory::create_item or a pointer initialized to 0.
-     *)
-    free: procedure(factory: XQC_ItemFactory); extdecl;
-
-
-    (**
-     * for internal use only
-     *)
-    data: pointer;
-  end;
-
-
-(**
- * This struct represents an instance of the XQuery 1.0 and XPath 2.0 Data Model (XDM).
- *
- * See http://www.w3.org/TR/xpath-datamodel/.
- *)
-  XQC_Sequence_s = record
-    (**
-     * Get the next item of the sequence.
-     *
-     * \param sequence The XQC_Sequence_s that this function pointer is a member of
-     * \param[out] item The item wrapper that should contain the next item if XQ_NO_ERROR is returned
-     *
-     * \retval ::XQC_NO_ERROR
-     * \retval ::XQP0019_INTERNAL_ERROR
-     * \retval any XQuery type or dynamic error
-     *)
-    next: function(sequence: XQC_Sequence; item: XQC_Item): XQUERY_ERROR; extdecl;
-
-
-    (**
-     * called to free the resources associated with the xqc_itemfactory.
-     *
-     * \param sequence the XQC_Sequence that this function pointer is a member of
-     *)
-    free: procedure(sequence: XQC_Sequence); extdecl;
-
-
-    (**
-     * for internal use only
-     *)
-    data: pointer;
-  end;
-
-
-(**
- * A Collection is a sequence of Node Items.
- *
- * Each Collection is created by the XmlDataManager and referenced by a URI.
- * The URI can be accessed in a query's fn:collection function.
- *)
-  XQC_Collection_s = record
-    (**
-     * Get the URI of a collection as an anyURI Item.
-     *
-     * \param collection the XQC_Collection_s that this function pointer is a member of
-     * \param[out] uri_item The uri item of the given collection. The user is responsible
-     *             for freeing the object by calling the XQC_Item::free() function.
-     *
-     * \retval ::XQC_NO_ERROR
-     * \retval ::XQP0019_INTERNAL_ERROR
-     *)
-    get_name: function(collection: XQC_Collection; out name_item: XQC_Item): XQUERY_ERROR; extdecl;
-
-
-    (**
-     * Adds a Node Item to the Collection
-     *
-     * \param collection the XQC_Collection_s that this function pointer is a member of
-     * \param node The node item to add to the given collection.
-     *
-     * \retval ::XQC_NO_ERROR
-     * \retval ::XQP0019_INTERNAL_ERROR
-     * \retval ::API0007_COLLECTION_ITEM_MUST_BE_A_NODE
-     *)
-    add_node: function(collection: XQC_Collection; node: XQC_Item): XQUERY_ERROR; extdecl;
-
-
-    (**
-     * Deletes a Node Item from the given Collection
-     *
-     * \param collection the XQC_Collection_s that this function pointer is a member of
-     * \param node The node item to delete from the given collection.
-     *
-     * \retval ::XQC_NO_ERROR
-     * \retval ::XQP0019_INTERNAL_ERROR
-     * \retval ::API0007_COLLECTION_ITEM_MUST_BE_A_NODE
-     *)
-    delete_node: function(collection: XQC_Collection; node: XQC_Item): XQUERY_ERROR; extdecl;
-
-
-    (**
-     * Adds a sequence of Node Items to the Collection
-     *
-     * \param collection the XQC_Collection_s that this function pointer is a member of
-     * \param sequence The sequence of node items to add to the given collection.
-     *
-     * \retval ::XQC_NO_ERROR
-     * \retval ::XQP0019_INTERNAL_ERROR
-     * \retval ::API0007_COLLECTION_ITEM_MUST_BE_A_NODE
-     *)
-    add_sequence: function(collection: XQC_Collection; sequence: XQC_Sequence): XQUERY_ERROR; extdecl;
-
-
-    (**
-     * Adds a document given by the FILE pointer to this collection.
-     *
-     * \param collection the XQC_Collection_s that this function pointer is a member of
-     * \param doc The document to add as a FILE pointer.
-     *
-     * \retval ::XQC_NO_ERROR
-     * \retval ::XQP0016_LOADER_IO_ERROR,
-     * \retval ::XQP0017_LOADER_PARSING_ERROR,
-     * \retval ::XQC_INTERNAL_ERROR
-     *)
-    add_document: function(collection: XQC_Collection; doc: pfile): XQUERY_ERROR; extdecl;
-
-
-    (**
-     * Adds a document given by the char pointer to this collection.
-     *
-     * \param collection the XQC_Collection_s that this function pointer is a member of
-     * \param doc The document to add as a char pointer.
-     *
-     * \retval ::XQC_NO_ERROR
-     * \retval ::XQP0016_LOADER_IO_ERROR,
-     * \retval ::XQP0017_LOADER_PARSING_ERROR,
-     * \retval ::XQC_INTERNAL_ERROR
-     *)
-    add_document_char: function(collection: XQC_Collection; const doc: pchar): XQUERY_ERROR; extdecl;
-
-
-    (**
-     * called to free the resources associated with the xqc_itemfactory.
-     *
-     * \param collection the XQC_Collection that this function pointer is a member of
-     *)
-    free: procedure(collection: XQC_Collection); extdecl;
-
-
-    (**
-     * for internal use only
-     *)
-    data: pointer;
-  end;
-
-
-(**
- * Using the XmlDataManager one can manage documents and collections.
- * 
- * The XmlDataManager is a singelton instance. The instance can be accessed by calling 
- * XQC_Implementation::data_manager. The XmlDataManager is thread-safe.
- *)
-  XQC_DataManager_s = record
-    (**
-     * This function loads a document from the given FILE pointer. The document
-     * is identified by the given URI.
-     *
-     * \param data_manager The XQC_DataManager that this function pointer is a member of
-     * \param doc_uri The URI of the document to load.
-     * \param document The document to load as a FILE pointer.
-     *
-     * \retval ::XQC_NO_ERROR
-     * \retval ::XQP0016_LOADER_IO_ERROR,
-     * \retval ::XQP0017_LOADER_PARSING_ERROR,
-     * \retval ::XQC_INTERNAL_ERROR
-     *)
-    load_document: function(data_manager: XQC_DataManager; const doc_uri: pchar; document: pfile): XQUERY_ERROR; extdecl;
-
-
-    (**
-     * This function loads a document that is retrieved from the given URI location. The document
-     * is identified by the given URI.
-     *
-     * \param data_manager The XQC_DataManager that this function pointer is a member of
-     * \param location The URI of the document to load.
-     *
-     * \retval ::XQC_NO_ERROR
-     * \retval ::XQP0016_LOADER_IO_ERROR,
-     * \retval ::XQP0017_LOADER_PARSING_ERROR,
-     * \retval ::XQC_INTERNAL_ERROR
-     *)
-    load_document_uri: function(data_manager: XQC_DataManager; const location: pchar): XQUERY_ERROR; extdecl;
-
-
-    (**
-     * Get the document identified by the given URI.
-     *
-     * \param data_manager The XQC_DataManager that this function pointer is a member of
-     * \param document_uri The URI of the document to retrieve.
-     * \param[out] doc The Item of the document to get.  The user is responsible
-     *                 for freeing the object by calling the XQC_Item::free() function.
-     *
-     * \retval ::XQC_NO_ERROR
-     * \retval ::XQC_INTERNAL_ERROR
-     *)
-    get_document: function(data_manager: XQC_DataManager; const document_uri: pchar; out doc: XQC_Item): XQUERY_ERROR; extdecl;
-
-
-    (*
-     * Delete the document identified by the given URI.
-     *
-     * \param data_manager The XQC_DataManager that this function pointer is a member of
-     * \param document_uri The URI of the document to delete.
-     *
-     * \retval ::XQC_NO_ERROR
-     * \retval ::XQC_INTERNAL_ERROR
-     *)
-    delete_document: function(data_manager: XQC_DataManager; const document_uri: pchar): XQUERY_ERROR; extdecl;
-
-
-    (**
-     * Create a new collection that is identified by the given URI.
-     *
-     * \param data_manager The XQC_DataManager that this function pointer is a member of
-     * \param document_uri The URI of the collection to create.
-     * \param[out] col The collection to create. The user is responsible
-     *                 for freeing the object by calling the XQC_Item::free() function.
-     *
-     * \retval ::XQC_NO_ERROR
-     * \retval ::XQC_INTERNAL_ERROR
-     *)
-    create_collection: function(data_manager: XQC_DataManager; const collection_uri: pchar; out col: XQC_Collection): XQUERY_ERROR; extdecl;
-
-
-    (**
-     * Get the collection that is identified by the given URI.
-     *
-     * \param data_manager The XQC_DataManager that this function pointer is a member of
-     * \param document_uri The URI of the collection to retrieve.
-     * \param[out] col The collection to retrieve. The user is responsible
-     *                 for freeing the object by calling the XQC_Item::free() function.
-     *
-     * \retval ::XQC_NO_ERROR
-     * \retval ::XQC_INTERNAL_ERROR
-     *)
-    get_collection: function(data_manager: XQC_DataManager; const collection_uri: pchar; out col: XQC_Collection): XQUERY_ERROR; extdecl;
-
-
-    (**
-     * Delete the collection that is identified by the given URI.
-     *
-     * \param data_manager The XQC_DataManager that this function pointer is a member of
-     * \param document_uri The URI of the collection to delete.
-     *
-     * \retval ::XQC_NO_ERROR
-     * \retval ::XQC_INTERNAL_ERROR
-     *)
-    delete_collection: function(data_manager: XQC_DataManager; const collection_uri: pchar): XQUERY_ERROR; extdecl;
-
-    (**
-     * Called to free the resources associated with the XQC_DataManager.
-     *
-     * \param context The XQC_DataManager that this function pointer is a member of
-     *)
-    free: procedure(data_manager: XQC_DataManager); extdecl;
-
-
-    (**
-     * for internal use only
-     *)
-    data: pointer;
-  end;
-
-
-(**
- * The ::XQC_OutputStream struct is designed to be passed to an XQC implementation in order
- * to return streaming data (i.e. the result of a query).
- *)
-  XQC_OutputStream_s = record
-    (**
-     * The function is called to provide the streaming result of a query
-     * in the buffer provided.
-     *
-     * \param stream The XQC_OutputStream that this function pointer is a member of
-     * \param buf The buffer that contains the data
-     * \param length The length of the contents in the buffer
-     *)
-    write: procedure(stream: XQC_OutputStream; const buf: pchar; length: cuint); extdecl;
-
-
-    (**
-     * Called to free the resources associated with the XQC_OutputStream.
-     * Free is called by the implementation if it finished writing to the stream.
-     *
-     * \param stream The XQC_OutputStream that this function pointer is a member of
-     *
-     *)
-    free: procedure(stream: XQC_OutputStream); extdecl;
-
-
-    (**
-     * for internal use only
-     *)
-    data: pointer;
-  end;
-
-
-(**
- * The ::XQC_InputStream struct is designed to be populated by users for the purpose
- * of streaming data into an XQC implementation.
- *)
-  XQC_InputStream_s = record
-     (**
-      * The function called to read more of the input (e.g. the query). The function should read
-      * the next chunk of input into the buffer provided, returning the length of the
-      * data read.
-      *
-      * \param stream The XQC_InputStream that this function pointer is a member of
-      * \param[out] buffer The buffer to read the data into
-      * \param length The length of the buffer
-      *
-      * \return The number of bytes read - this will be less than length if the end of the input is reached
-      *         or -1 if an error occured
-      *
-      *)
-    read: function(stream: XQC_InputStream; const buf: pchar; length: cuint): cint; extdecl;
-
-
-    (**
-     * Called to free the resources associated with the XQC_InputStream.
-     * The free function is called by the implementation if it finished reading from the stream.
-     * This allows for lazy evaluation without the user needing to know when reading from the
-     * stream has finished.
-     *
-     * \param stream The XQC_InputStream that this function pointer is a member of
-     *
-     *)
-    free: procedure(stream: XQC_InputStream); extdecl;
-
-
-    (**
-     * for internal use only
-     *)
-    data: pointer;
-  end;
-
-
-(**
- * The ::XQC_ErrorHandler struct is designed to be populated by users for the purpose
- * of collecting more detailed error messages from an XQC implementation. An XQC_ErrorHandler
- * can be set for a query using the XQC_Query::set_error_handler() function.
- *
- * The XQC_ErrorHandler struct has no free() function pointer because the user remains 
- * responsible for freeing the resources associated with this struct.
- *)
-  XQC_ErrorHandler_s = record
-    (**
-     * The function is called when an error occurs. The function receives the components of the
-     * error as arguments. When this function returns, the implementation will exit query parsing or
-     * execution with the error enumeration value passed as an argument.
-     *
-     * \param handler The XQC_ErrorHandler that this function pointer is a member of
-     * \param error The error as a value of the XQUERY_ERROR enum.
-     * \param local_name The local name of the error or an empty string if no local_name is given 
-     *                   (e.g. for errors not defined in the spec).
-     * \param description A detailed description of the error or an empty string if no description is available.
-     * \param query_uri The uri of the query causing the error or an empty string if no uri is available for the query.
-     * \param line The line number of the query where the error occured.
-     * \param components The column number in the line in the query where the error occured.
-     *)
-    error: procedure(handler: XQC_ErrorHandler; error: XQUERY_ERROR; const local_name, description,
-      query_uri: pchar; line, column: cuint); extdecl;
-
-
-    (**
-     * Can be used for user specific purposes.
-     *)
-    data: pointer;
-  end;
-
 
 (**
  * The zorba_implementation function creates a new ::XQC_Implementation object.
diff --git a/packages/zorba/src/zorba_options.inc b/packages/zorba/src/zorba_options.inc
index 1aabc41f56..15607f1636 100644
--- a/packages/zorba/src/zorba_options.inc
+++ b/packages/zorba/src/zorba_options.inc
@@ -14,7 +14,7 @@
  * limitations under the License.
  *)
 
-
+type
 (** \brief The optimization level used for optimizing the query. *)
   Zorba_opt_level_t = (
     ZORBA_OPT_LEVEL_O0, (**< Don't use any optimization. *)