bk commit into 5.0 tree (bell:1.1936) BUG#9715

[sanja]

Below is the list of changes that have just been committed into a local
5.0 repository of bell. When bell does a push these changes will
be propagated to the main repository and, within 24 hours after the
push, to the public repository.
For information on how to access the public repository
see http://dev.mysql.com/doc/mysql/en/installing-source-tree.html

ChangeSet
  1.1936 05/06/14 22:45:48 bell@stripped +5 -0
  prohibit opening Query cache for SP cursors (BUG#9715)

  sql/sp_rcontext.h
    1.20 05/06/14 22:45:44 bell@stripped +1 -5
    constructor moved to .cc file to be able to use methods from lex_keeper

  sql/sp_rcontext.cc
    1.30 05/06/14 22:45:44 bell@stripped +11 -0
    prohibit opening Query cache for SP cursors

  sql/sp_head.h
    1.55 05/06/14 22:45:44 bell@stripped +4 -0
    method for prohibiting of QC using SP query

  mysql-test/t/query_cache.test
    1.41 05/06/14 22:45:44 bell@stripped +32 -0
    testing cursors in SP with QC
    testing suspicious but working using selects in function with QC

  mysql-test/r/query_cache.result
    1.54 05/06/14 22:45:44 bell@stripped +29 -0
    testing cursors in SP with QC
    testing suspicious but working using selects in function with QC

# This is a BitKeeper patch.  What follows are the unified diffs for the
# set of deltas contained in the patch.  The rest of the patch, the part
# that BitKeeper cares about, is below these diffs.
# User:	bell
# Host:	sanja.is.com.ua
# Root:	/home/bell/mysql/bk/work-bug3-5.0

--- 1.53/mysql-test/r/query_cache.result	Mon May  2 21:45:02 2005
+++ 1.54/mysql-test/r/query_cache.result	Tue Jun 14 22:45:44 2005
@@ -1007,4 +1007,33 @@
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 flush query cache;
 drop table t1, t2;
+create table t1 (a int);
+insert into t1 values (1),(2);
+CREATE PROCEDURE `p1`()
+begin
+Declare c1 cursor for select a from t1;
+open c1;
+select * from t1;
+end//
+call p1()//
+a
+1
+2
+drop procedure p1;
+create function f1() returns int
+begin
+Declare var1 int;
+select max(a) from t1 into var1;
+return var1;
+end//
+create procedure `p1`()
+begin
+select a, f1() from t1;
+end//
+call p1()//
+a	f1()
+1	2
+2	2
+drop procedure p1//
+drop table t1//
 set GLOBAL query_cache_size=0;

--- 1.40/mysql-test/t/query_cache.test	Mon May  2 20:19:33 2005
+++ 1.41/mysql-test/t/query_cache.test	Tue Jun 14 22:45:44 2005
@@ -756,4 +756,36 @@
 
 drop table t1, t2;
 
+#
+# SP cursors and selects with query cache (BUG#9715)
+#
+create table t1 (a int);
+insert into t1 values (1),(2);
+
+delimiter //;
+CREATE PROCEDURE `p1`()
+begin
+Declare c1 cursor for select a from t1;
+open c1;
+select * from t1;
+end//
+call p1()//
+drop procedure p1;
+
+create function f1() returns int
+begin
+Declare var1 int;
+select max(a) from t1 into var1;
+return var1;
+end//
+create procedure `p1`()
+begin
+ select a, f1() from t1;
+end//
+call p1()//
+drop procedure p1//
+
+drop table t1//
+delimiter ;//
+
 set GLOBAL query_cache_size=0;

--- 1.54/sql/sp_head.h	Fri May 27 13:38:28 2005
+++ 1.55/sql/sp_head.h	Tue Jun 14 22:45:44 2005
@@ -377,6 +377,10 @@
     return (uint)m_lex->sql_command;
   }
 
+  void disable_query_cache()
+  {
+    m_lex->safe_to_cache_query= 0;
+  }
 private:
 
   LEX *m_lex;

--- 1.29/sql/sp_rcontext.cc	Fri Jun 10 17:56:25 2005
+++ 1.30/sql/sp_rcontext.cc	Tue Jun 14 22:45:44 2005
@@ -169,6 +169,17 @@
  *
  */
 
+sp_cursor::sp_cursor(sp_lex_keeper *lex_keeper)
+  :m_lex_keeper(lex_keeper), m_prot(NULL), m_isopen(0), m_current_row(NULL)
+{
+  /*
+    currsor can't be stored in QC, so we should prevent opening QC for
+    try to write results which are absent.
+  */
+  lex_keeper->disable_query_cache();
+}
+
+
 /*
   pre_open cursor
 

--- 1.19/sql/sp_rcontext.h	Fri Jun 10 17:13:55 2005
+++ 1.20/sql/sp_rcontext.h	Tue Jun 14 22:45:44 2005
@@ -203,11 +203,7 @@
 {
 public:
 
-  sp_cursor(sp_lex_keeper *lex_keeper)
-    : m_lex_keeper(lex_keeper), m_prot(NULL), m_isopen(0), m_current_row(NULL)
-  {
-    /* Empty */
-  }
+  sp_cursor(sp_lex_keeper *lex_keeper);
 
   virtual ~sp_cursor()
   {