sql_callback.h

/*
  Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.

  This program is free software; you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation; version 2 of the License.

  This program is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU General Public License for more details.

  You should have received a copy of the GNU General Public License
  along with this program; if not, write to the Free Software
  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301  USA
*/

#ifndef SQL_CALLBACK_INCLUDED
#define SQL_CALLBACK_INCLUDED

#define MYSQL_CALLBACK(OBJ, FUNC, PARAMS)         \
  do {                                            \
    if ((OBJ) && ((OBJ)->FUNC))                   \
      (OBJ)->FUNC PARAMS;                         \
  } while (0)

#define MYSQL_CALLBACK_ELSE(OBJ, FUNC, PARAMS, ELSE)    \
  (((OBJ) && ((OBJ)->FUNC)) ? (OBJ)->FUNC PARAMS : (ELSE))


#endif /* SQL_CALLBACK_INCLUDED */