WL#962: Added simple, read-only, non-scrolling, asensitive cursors in SPs, using the

(updated) Protocol_cursor class.
Also did some bug fixes.


Docs/sp-imp-spec.txt:
  Added CURSOR docs (and fixed typos)
Docs/sp-implemented.txt:
  Updated for CURSORs
include/mysqld_error.h:
  New error codes/messages for CURSORs
libmysqld/Makefile.am:
  SP cursors now needs this.
mysql-test/r/sp-error.result:
  New tests for cursors.
mysql-test/r/sp.result:
  New tests for cursors.
mysql-test/t/sp-error.test:
  New tests for cursors.
mysql-test/t/sp.test:
  New tests for cursors.
sql/protocol.cc:
  We now always have Protocol_cursor (SPs use it)
sql/protocol.h:
  Fixed bugs in Protocol_cursor (for SPs)
sql/protocol_cursor.cc:
  Fixed bugs in Protocol_cursor (for SPs)
sql/share/czech/errmsg.txt:
  New error codes/messages for CURSORs
sql/share/danish/errmsg.txt:
  New error codes/messages for CURSORs
sql/share/dutch/errmsg.txt:
  New error codes/messages for CURSORs
sql/share/english/errmsg.txt:
  New error codes/messages for CURSORs
sql/share/estonian/errmsg.txt:
  New error codes/messages for CURSORs
sql/share/french/errmsg.txt:
  New error codes/messages for CURSORs
sql/share/german/errmsg.txt:
  New error codes/messages for CURSORs
sql/share/greek/errmsg.txt:
  New error codes/messages for CURSORs
sql/share/hungarian/errmsg.txt:
  New error codes/messages for CURSORs
sql/share/italian/errmsg.txt:
  New error codes/messages for CURSORs
sql/share/japanese/errmsg.txt:
  New error codes/messages for CURSORs
sql/share/korean/errmsg.txt:
  New error codes/messages for CURSORs
sql/share/norwegian-ny/errmsg.txt:
  New error codes/messages for CURSORs
sql/share/norwegian/errmsg.txt:
  New error codes/messages for CURSORs
sql/share/polish/errmsg.txt:
  New error codes/messages for CURSORs
sql/share/portuguese/errmsg.txt:
  New error codes/messages for CURSORs
sql/share/romanian/errmsg.txt:
  New error codes/messages for CURSORs
sql/share/russian/errmsg.txt:
  New error codes/messages for CURSORs
sql/share/serbian/errmsg.txt:
  New error codes/messages for CURSORs
sql/share/slovak/errmsg.txt:
  New error codes/messages for CURSORs
sql/share/spanish/errmsg.txt:
  New error codes/messages for CURSORs
sql/share/swedish/errmsg.txt:
  New error codes/messages for CURSORs
sql/share/ukrainian/errmsg.txt:
  New error codes/messages for CURSORs
sql/sp_head.cc:
  Added cursor support.
  Also fixed problems with item_lists, where pointers and ref_pointer_arrays.
sql/sp_head.h:
  Added cursor support
sql/sp_pcontext.cc:
  Added cursor support
sql/sp_pcontext.h:
  Added cursor support
sql/sp_rcontext.cc:
  Added cursor support, in particular the new sp_cursor class.
sql/sp_rcontext.h:
  Added cursor support, in particular the new sp_cursor class.
sql/sql_lex.h:
  We sometimes need to copy item_lists in LEX when executing substatements in SPs
sql/sql_yacc.yy:
  Added minimal cursor support (not the full syntax yet).

1 files changed, 7 insertions, 2 deletions

diff --git a/Docs/sp-implemented.txt b/Docs/sp-implemented.txt
index 5ce09ae3af4..c9112d75e43 100644
--- a/Docs/sp-implemented.txt
+++ b/Docs/sp-implemented.txt
@@ -8,8 +8,7 @@ Summary of Not Yet Implemented:
   - Access control
   - Routine characteristics (mostly used for external languages)
   - SQL-99 COMMIT (related to BEGIN/END)
-  - DECLARE CURSOR ...
-  - FOR-loops (as it requires cursors)
+  - FOR-loops
   - CASCADE/RESTRICT for ALTER and DROP
   - ALTER/DROP METHOD (as it implies User Defined Types)
   - SIGNAL and RESIGNAL, and UNDO handlers
@@ -25,6 +24,7 @@ Summary of what's implemented:
   - "Non-query" FUNCTIONs only
   - Prepared SP caching
   - CONDITIONs and HANDLERs
+  - Simple read-only CURSORs.
 
 List of what's implemented:
 
@@ -86,6 +86,11 @@ List of what's implemented:
       The semantics of CONDITIONs is expanded to allow catching MySQL error
       codes as well. UNDO handlers are not implemented (since we don't have
       SQL-99 style transaction control yet).
+    - Simple read-only CURSORs are implemented, but not yet any of the
+      optional arguments to DECLARE (SCROLL, SENSITIVE, etc) or FETCH
+      (NEXT, PRIOR, etc). Cursors are ASENSITIVE, READ-ONLY, non-SCROLLing.
+      (The additional syntax will be added for completeness, but for the
+       most part unsupported with the current underlying cursor mechanism.)
 
 Closed questions: