/* 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

/**
 Sql_cmd_common_signal represents the common properties of the
 SIGNAL and RESIGNAL statements.
*/
class Sql_cmd_common_signal : public Sql_cmd
{
protected:
 /**
 Constructor.
 @param cond the condition signaled if any, or NULL.
 @param set collection of signal condition item assignments.
 */
 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()
 {}


 /**
 The condition to signal or resignal.
 This member is optional and can be NULL (RESIGNAL).
 */
 const sp_condition_value *m_cond;

 /**
 Collection of 'SET item = value' assignments in the
 SIGNAL/RESIGNAL statement.
 */
 Set_signal_information m_set_signal_information;
};

/**
 Sql_cmd_signal represents a SIGNAL statement.
*/
class Sql_cmd_signal : public Sql_cmd_common_signal
{
public:
 /**
 Constructor, used to represent a SIGNAL statement.
 @param cond the SQL condition to signal (required).
 @param set the collection of signal informations to signal.
 */
 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;
 }
};

/**
 Sql_cmd_resignal represents a RESIGNAL statement.
*/
class Sql_cmd_resignal : public Sql_cmd_common_signal
{
public:
 /**
 Constructor, used to represent a RESIGNAL statement.
 @param cond the SQL condition to resignal (optional, may be NULL).
 @param set the collection of signal informations to resignal.
 */
 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;
 }
};

#endif