Adding XPath support: ExtractValue and UpdateXML functions.

libmysqld/Makefile.am:
sql/Makefile.am:
  Adding new source files.
  Adding new file into build process.
include/my_xml.h:
strings/xml.c:
  Adding new XML parse flags to skip text normalization and 
  to use relative tag names. Adding enum for XML token types.
sql/lex.h:
  Making parser aware of new SQL functions.
sqll/item_create.h, sql/item_create.cc:
  Adding creators for ExtractValue and UpdateXML.
sql/item.h:
  Adding new Item types: nodeset and nodeset comparator.
sql/item_xmlfunc.h
sql/item_xmlfunc.cc
  Adding new classes implementing XPath functions.
mysql-test/t/xml.test, mysql-test/r/xml.result:
  New files: adding test case


include/my_xml.h:
  Adding ExtractValue and UpdateXML functions.
  Adding XML parser flags and enum for XML token types.
sql/Makefile.am:
  Adding new source files.
sql/item.h:
  Adding new Item types: nodeset and nodeset comparator.
sql/item_create.cc:
  Adding creators for ExtractValue and UpdateXML.
sql/item_create.h:
  Adding creators for ExtractValue and UpdateXML.
sql/lex.h:
  Make parse aware of new SQL functions.
strings/xml.c:
  Adding new flags to skip text normalization and 
  to use relative tag names.
libmysqld/Makefile.am:
  Adding new file into build process.

1 files changed, 56 insertions, 0 deletions

diff --git a/sql/item_xmlfunc.h b/sql/item_xmlfunc.h
new file mode 100644
index 00000000000..bc47e9c5bb1
--- /dev/null
+++ b/sql/item_xmlfunc.h
@@ -0,0 +1,56 @@
+/* Copyright (C) 2000-2005 MySQL AB
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA */
+
+
+/* This file defines all XML functions */
+
+
+#ifdef __GNUC__
+#pragma interface			/* gcc class implementation */
+#endif
+
+
+class Item_xml_str_func: public Item_str_func
+{
+protected:
+  String tmp_value, pxml;
+  Item *nodeset_func;
+public:
+  Item_xml_str_func(Item *a, Item *b): Item_str_func(a,b) {}
+  Item_xml_str_func(Item *a, Item *b, Item *c): Item_str_func(a,b,c) {}
+  void fix_length_and_dec();
+  String *parse_xml(String *raw_xml, String *parsed_xml_buf);
+};
+
+
+class Item_func_xml_extractvalue: public Item_xml_str_func
+{
+public:
+  Item_func_xml_extractvalue(Item *a,Item *b) :Item_xml_str_func(a,b) {}
+  const char *func_name() const { return "extractvalue"; }
+  String *val_str(String *);
+};
+
+
+class Item_func_xml_update: public Item_xml_str_func
+{
+  String tmp_value2, tmp_value3;
+public:
+  Item_func_xml_update(Item *a,Item *b,Item *c) :Item_xml_str_func(a,b,c) {}
+  const char *func_name() const { return "updatexml"; }
+  String *val_str(String *);
+};
+