sql_signal.h

/* Copyright (c) 2008, 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,
   51 Franklin Street, Suite 500, Boston, MA 02110-1335 USA */

#ifndef SQL_SIGNAL_H
#define SQL_SIGNAL_H

class Sql_cmd_common_signal : public Sql_cmd
{
protected:
  Sql_cmd_common_signal(const sp_condition_value *cond,
                        const Set_signal_information& set)
    : Sql_cmd(),
      m_cond(cond),
      m_set_signal_information(set)
  {}

  virtual ~Sql_cmd_common_signal()
  {}

  static void assign_defaults(Sql_condition *cond,
                              bool set_level_code,
                              Sql_condition::enum_warning_level level,
                              int sqlcode);

  void eval_defaults(THD *thd, Sql_condition *cond);

  int eval_signal_informations(THD *thd, Sql_condition *cond);

  bool raise_condition(THD *thd, Sql_condition *cond);

  const sp_condition_value *m_cond;

  Set_signal_information m_set_signal_information;
};

class Sql_cmd_signal : public Sql_cmd_common_signal
{
public:
  Sql_cmd_signal(const sp_condition_value *cond,
                 const Set_signal_information& set)
    : Sql_cmd_common_signal(cond, set)
  {}

  virtual ~Sql_cmd_signal()
  {}

  virtual enum_sql_command sql_command_code() const
  {
    return SQLCOM_SIGNAL;
  }

  virtual bool execute(THD *thd);
};

class Sql_cmd_resignal : public Sql_cmd_common_signal
{
public:
  Sql_cmd_resignal(const sp_condition_value *cond,
                   const Set_signal_information& set)
    : Sql_cmd_common_signal(cond, set)
  {}

  virtual ~Sql_cmd_resignal()
  {}

  virtual enum_sql_command sql_command_code() const
  {
    return SQLCOM_RESIGNAL;
  }

  virtual bool execute(THD *thd);
};

#endif