Changed SQL variable delay_key_write to an enum

able delay_key_write as default (as it was in 4.0.2)


Docs/manual.texi:
  Updated information about variable DELAY_KEY_WRITE.
mysql-test/r/type_decimal.result:
  Updated results
mysql-test/r/variables.result:
  Updated results
mysql-test/t/type_decimal.test:
  Fixed test to not cause purify error in mathlib during purify.
mysql-test/t/variables.test:
  Test new usage of DELAY_KEY_WRITE
sql/ha_innodb.cc:
  Merge with 3.23 code
sql/mysql_priv.h:
  Changed SQL variable delay_key_write to an enum
sql/mysqld.cc:
  Changed SQL variable delay_key_write to an enum.
  Enable delay_key_write as default (as it was in 4.0.2)
sql/set_var.cc:
  Changed SQL variable delay_key_write to an enum
sql/set_var.h:
  Changed SQL variable delay_key_write to an enum
sql/sql_class.h:
  Changed SQL variable delay_key_write to an enum
sql/sql_yacc.yy:
  Changed SQL variable delay_key_write to an enum

1 files changed, 22 insertions, 1 deletions

diff --git a/sql/set_var.h b/sql/set_var.h
index 46463089b03..cbe479b7902 100644
--- a/sql/set_var.h
+++ b/sql/set_var.h
@@ -28,7 +28,7 @@
 class sys_var;
 class set_var;
 typedef struct system_variables SV;
-extern TYPELIB bool_typelib;
+extern TYPELIB bool_typelib, delay_key_write_typelib;
 
 enum enum_var_type
 {
@@ -140,6 +140,26 @@ public:
 };
 
 
+class sys_var_enum :public sys_var
+{
+  uint	*value; 
+  TYPELIB *enum_names;
+public:
+  sys_var_enum(const char *name_arg, uint *value_arg,
+	       TYPELIB *typelib, sys_after_update_func func)
+    :sys_var(name_arg,func), value(value_arg), enum_names(typelib)
+  {}
+  bool check(THD *thd, set_var *var)
+  {
+    return check_enum(thd, var, enum_names);
+  }
+  bool update(THD *thd, set_var *var);
+  SHOW_TYPE type() { return SHOW_CHAR; }
+  byte *value_ptr(THD *thd, enum_var_type type);
+  bool check_update_type(Item_result type) { return 0; }
+};
+
+
 class sys_var_thd :public sys_var
 {
 public:
@@ -415,5 +435,6 @@ void set_var_init();
 void set_var_free();
 sys_var *find_sys_var(const char *str, uint length=0);
 bool sql_set_variables(THD *thd, List<set_var_base> *var_list);
+void fix_delay_key_write(THD *thd, enum_var_type type);
 
 extern sys_var_str sys_charset;