6fcb411fe4
Prepared statements can return multiple result sets since MySQL 5.5. That can happen when calling stored procedures using `CALL x();`. This change removes the previous caching of result bindings, since the number of fields in a result can differ from result set to result set. This could potentially have a negative impact on prepared statements always only returning one result set, since the result binding buffers are recreated everytime the statement is executed instead of once. That difference should be negligible. Fixes #823.
84 lines
2.8 KiB
C++
84 lines
2.8 KiB
C++
/**
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* vim: set ts=4 sw=4 tw=99 noet :
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* =============================================================================
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* SourceMod MySQL Extension
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* Copyright (C) 2004-2008 AlliedModders LLC. All rights reserved.
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* =============================================================================
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*
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* This program is free software; you can redistribute it and/or modify it under
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* the terms of the GNU General Public License, version 3.0, as published by the
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* Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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* details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* As a special exception, AlliedModders LLC gives you permission to link the
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* code of this program (as well as its derivative works) to "Half-Life 2," the
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* "Source Engine," the "SourcePawn JIT," and any Game MODs that run on software
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* by the Valve Corporation. You must obey the GNU General Public License in
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* all respects for all other code used. Additionally, AlliedModders LLC grants
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* this exception to all derivative works. AlliedModders LLC defines further
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* exceptions, found in LICENSE.txt (as of this writing, version JULY-31-2007),
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* or <http://www.sourcemod.net/license.php>.
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*
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* Version: $Id$
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*/
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#ifndef _INCLUDE_SM_MYSQL_STATEMENT_H_
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#define _INCLUDE_SM_MYSQL_STATEMENT_H_
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#include "MyDatabase.h"
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#include "MyBoundResults.h"
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struct ParamBind
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{
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union
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{
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float fval;
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int ival;
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} data;
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void *blob;
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size_t length;
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};
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class MyStatement : public IPreparedQuery
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{
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public:
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MyStatement(MyDatabase *db, MYSQL_STMT *stmt);
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~MyStatement();
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public: //IQuery
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IResultSet *GetResultSet();
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bool FetchMoreResults();
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void Destroy();
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public: //IPreparedQuery
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bool BindParamInt(unsigned int param, int num, bool signd=true);
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bool BindParamFloat(unsigned int param, float f);
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bool BindParamNull(unsigned int param);
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bool BindParamString(unsigned int param, const char *text, bool copy);
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bool BindParamBlob(unsigned int param, const void *data, size_t length, bool copy);
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bool Execute();
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const char *GetError(int *errCode=NULL);
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unsigned int GetAffectedRows();
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unsigned int GetInsertID();
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private:
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void *CopyBlob(unsigned int param, const void *blobptr, size_t length);
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void ClearResults();
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private:
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MYSQL *m_mysql;
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ke::RefPtr<MyDatabase> m_pParent;
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MYSQL_STMT *m_stmt;
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MYSQL_BIND *m_bind;
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MYSQL_RES *m_pRes;
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ParamBind *m_pushinfo;
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unsigned int m_Params;
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MyBoundResults *m_rs;
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bool m_Results;
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};
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#endif //_INCLUDE_SM_MYSQL_STATEMENT_H_
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