revert "LOCK TABLES ... WHERE ENGINE=INNODB"

sql/handler.h

@@ -480,13 +480,6 @@ class handler :public Sql_alloc
   { return extra(operation); }
   virtual int reset() { return extra(HA_EXTRA_RESET); }
   virtual int external_lock(THD *thd, int lock_type) { return 0; }
-  /*
-    This is called to set transactional table lock to a table.
-    If the handler don't support this, then this function will
-    return HA_ERR_WRONG_COMMAND and MySQL will give
-    ER_ILLEGAL_HA error message.
-  */
-  virtual int transactional_table_lock(THD *thd, int lock_type) {return HA_ERR_WRONG_COMMAND;}
   virtual void unlock_row() {}
   virtual int start_stmt(THD *thd) {return 0;}
   /*

sql/lock.cc

@@ -939,61 +939,3 @@ bool make_global_read_lock_block_commit(THD *thd)
   DBUG_RETURN(error);
 }
 
-/*
-  Take transactional table lock for all tables in the list
-
-  SYNOPSIS
-    transactional_lock_tables
-    thd			Thread THD
-    tables              list of tables
-    counter             number of tables in the list
-
-  NOTES
-
-  RETURN
-    0  - OK
-    -1 - error
-
-*/
-int transactional_lock_tables(THD *thd, TABLE_LIST *tables, uint counter)
-{ 
-  uint i;
-  int lock_type,error=0;
-  TABLE_LIST *table;
-  TABLE **start,**ptr;
-
-  DBUG_ENTER("transactional_lock_tables");
-
-  if (!(ptr=start=(TABLE**) sql_alloc(sizeof(TABLE*) * counter)))
-      return -1;
-    
-  for (table= tables; table; table= table->next_global)
-  {
-    if (!table->placeholder() && !table->schema_table)
-      *(ptr++)= table->table;
-  }
-
-  for (i=1 ; i <= counter ; i++, start++)
-  {
-    DBUG_ASSERT((*start)->reginfo.lock_type >= TL_READ);
-    lock_type=F_WRLCK;				/* Lock exclusive */
-
-    if ((*start)->db_stat & HA_READ_ONLY ||
-       ((*start)->reginfo.lock_type >= TL_READ &&
-	(*start)->reginfo.lock_type <= TL_READ_NO_INSERT))
-      lock_type=F_RDLCK;
-
-    if ((error=(*start)->file->transactional_table_lock(thd, lock_type)))
-    {
-      print_lock_error(error, (*start)->file->table_type());
-      DBUG_RETURN(-1);
-    }
-    else
-    {
-      (*start)->db_stat &= ~ HA_BLOCK_LOCK;
-      (*start)->current_lock= lock_type;
-    }
-  }
-
-  DBUG_RETURN(0);
-}

sql/mysql_priv.h

@@ -830,7 +830,6 @@ int open_tables(THD *thd, TABLE_LIST *tables, uint *counter);
 int simple_open_n_lock_tables(THD *thd,TABLE_LIST *tables);
 bool open_and_lock_tables(THD *thd,TABLE_LIST *tables);
 int lock_tables(THD *thd, TABLE_LIST *tables, uint counter);
-int transactional_lock_tables(THD *thd, TABLE_LIST *tables, uint counter);
 TABLE *open_temporary_table(THD *thd, const char *path, const char *db,
 			    const char *table_name, bool link_in_list);
 bool rm_temporary_table(enum db_type base, char *path);

sql/sql_lex.h

@@ -87,8 +87,8 @@ enum enum_sql_command {
   SQLCOM_PREPARE, SQLCOM_EXECUTE, SQLCOM_DEALLOCATE_PREPARE,
   SQLCOM_CREATE_VIEW, SQLCOM_DROP_VIEW,
   SQLCOM_CREATE_TRIGGER, SQLCOM_DROP_TRIGGER,
-  SQLCOM_LOCK_TABLES_TRANSACTIONAL,
   /* This should be the last !!! */
+
   SQLCOM_END
 };
 

sql/sql_parse.cc

@@ -3252,27 +3252,6 @@ mysql_execute_command(THD *thd)
       thd->options&= ~(ulong) (OPTION_TABLE_LOCK);
     thd->in_lock_tables=0;
     break;
-  case SQLCOM_LOCK_TABLES_TRANSACTIONAL:
-  {
-    uint counter = 0;
-
-    if (check_db_used(thd, all_tables))
-      goto error;
-    if (check_table_access(thd, LOCK_TABLES_ACL | SELECT_ACL, all_tables, 0))
-      goto error;
-
-    thd->in_lock_tables=1;
-    thd->options|= OPTION_TABLE_LOCK;
-
-    if (open_tables(thd, all_tables, &counter) == 0 &&
-        transactional_lock_tables(thd, all_tables, counter) == 0)
-        send_ok(thd);
-    else
-      thd->options&= ~(ulong) (OPTION_TABLE_LOCK);
-
-    thd->in_lock_tables=0;
-    break;
-  }
   case SQLCOM_CREATE_DB:
   {
     char *alias;

sql/sql_yacc.yy

@@ -7418,7 +7418,7 @@ lock:
 	{
 	  Lex->sql_command=SQLCOM_LOCK_TABLES;
 	}
-	table_lock_list lock_engine_opt
+	table_lock_list
 	{}
 	;
 
@@ -7445,15 +7445,6 @@ lock_option:
 	| READ_SYM LOCAL_SYM { $$= TL_READ; }
         ;
 
-lock_engine_opt:
-	/* empty */	
-	| WHERE 
-	{
-	  Lex->sql_command=SQLCOM_LOCK_TABLES_TRANSACTIONAL;
-	}
-	ENGINE_SYM opt_equal storage_engines
-	;
-
 unlock:
 	UNLOCK_SYM table_or_tables { Lex->sql_command=SQLCOM_UNLOCK_TABLES; }
         ;