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Print a error message if the handler don't support transactional table

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locks (LOCK TABLES ... WHERE ENGINE = ).
 


sql/handler.h:
  Return a error if the handler don't support transactional table locks.
sql/lock.cc:
  Print a error message if the handler don't support transactional table
  locks.
This commit is contained in:
unknown 2004-12-16 09:52:19 +02:00
parent 1bea012cce
commit 868266f1b1
2 changed files with 21 additions and 7 deletions
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8
sql/handler.h
View File

@ -452,7 +452,13 @@ public:
{ return extra(operation); }
virtual int reset() { return extra(HA_EXTRA_RESET); }
virtual int external_lock(THD *thd, int lock_type) { return 0; }
virtual int transactional_table_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;}
/*

20
sql/lock.cc
View File

@ -79,7 +79,7 @@ static MYSQL_LOCK *get_lock_data(THD *thd, TABLE **table,uint count,
bool unlock, TABLE **write_locked);
static int lock_external(THD *thd, TABLE **table,uint count);
static int unlock_external(THD *thd, TABLE **table,uint count);
static void print_lock_error(int error);
static void print_lock_error(int error, const char *);
MYSQL_LOCK *mysql_lock_tables(THD *thd,TABLE **tables,uint count)
@ -187,7 +187,7 @@ static int lock_external(THD *thd, TABLE **tables, uint count)
(*tables)->file->external_lock(thd, F_UNLCK);
(*tables)->current_lock=F_UNLCK;
}
print_lock_error(error);
print_lock_error(error, (*tables)->file->table_type());
DBUG_RETURN(error);
}
else
@ -380,7 +380,7 @@ static int unlock_external(THD *thd, TABLE **table,uint count)
table++;
} while (--count);
if (error_code)
print_lock_error(error_code);
print_lock_error(error_code, (*table)->file->table_type());
DBUG_RETURN(error_code);
}
@ -683,7 +683,7 @@ void unlock_table_names(THD *thd, TABLE_LIST *table_list,
}
static void print_lock_error(int error)
static void print_lock_error(int error, const char *table)
{
int textno;
DBUG_ENTER("print_lock_error");
@ -698,11 +698,19 @@ static void print_lock_error(int error)
case HA_ERR_LOCK_DEADLOCK:
textno=ER_LOCK_DEADLOCK;
break;
case HA_ERR_WRONG_COMMAND:
textno=ER_ILLEGAL_HA;
break;
default:
textno=ER_CANT_LOCK;
break;
}
my_error(textno,MYF(ME_BELL+ME_OLDWIN+ME_WAITTANG),error);
if ( textno == ER_ILLEGAL_HA )
my_error(textno, MYF(ME_BELL+ME_OLDWIN+ME_WAITTANG), table);
else
my_error(textno, MYF(ME_BELL+ME_OLDWIN+ME_WAITTANG), error);
DBUG_VOID_RETURN;
}
@ -977,7 +985,7 @@ int transactional_lock_tables(THD *thd, TABLE_LIST *tables, uint counter)
if ((error=(*start)->file->transactional_table_lock(thd, lock_type)))
{
print_lock_error(error);
print_lock_error(error, (*start)->file->table_type());
DBUG_RETURN(-1);
}
else