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https://github.com/Telecominfraproject/wlan-cloud-lib-poco.git
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163 lines
4.3 KiB
C++
163 lines
4.3 KiB
C++
//
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// StatementExecutor.cpp
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//
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// $Id: //poco/1.3/Data/MySQL/src/StatementExecutor.cpp#1 $
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//
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// Library: Data
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// Package: MySQL
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// Module: StatementExecutor
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//
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// Copyright (c) 2008, Applied Informatics Software Engineering GmbH.
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// and Contributors.
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//
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// Permission is hereby granted, free of charge, to any person or organization
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// obtaining a copy of the software and accompanying documentation covered by
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// this license (the "Software") to use, reproduce, display, distribute,
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// execute, and transmit the Software, and to prepare derivative works of the
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// Software, and to permit third-parties to whom the Software is furnished to
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// do so, all subject to the following:
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//
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// The copyright notices in the Software and this entire statement, including
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// the above license grant, this restriction and the following disclaimer,
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// must be included in all copies of the Software, in whole or in part, and
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// all derivative works of the Software, unless such copies or derivative
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// works are solely in the form of machine-executable object code generated by
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// a source language processor.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
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// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
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// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
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// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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// DEALINGS IN THE SOFTWARE.
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//
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#include <mysql.h>
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#include "Poco/Data/MySQL/StatementExecutor.h"
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#include <sstream>
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namespace Poco {
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namespace Data {
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namespace MySQL {
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StatementExecutor::StatementExecutor(MYSQL* mysql)
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: _pSessionHandle(mysql)
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, _affectedRowCount(0)
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{
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if (!(_pHandle = mysql_stmt_init(mysql)))
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throw StatementException("mysql_stmt_init error");
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_state = STMT_INITED;
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}
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StatementExecutor::~StatementExecutor()
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{
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mysql_stmt_close(_pHandle);
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}
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int StatementExecutor::state() const
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{
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return _state;
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}
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void StatementExecutor::prepare(const std::string& query)
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{
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if (_state >= STMT_COMPILED)
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{
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_state = STMT_COMPILED;
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return;
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}
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if (mysql_stmt_prepare(_pHandle, query.c_str(), static_cast<unsigned int>(query.length())) != 0)
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throw StatementException("mysql_stmt_prepare error", _pHandle, query);
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_query = query;
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_state = STMT_COMPILED;
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}
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void StatementExecutor::bindParams(MYSQL_BIND* params, std::size_t count)
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{
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if (_state < STMT_COMPILED)
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throw StatementException("Satement is not compiled yet");
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if (count != mysql_stmt_param_count(_pHandle))
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throw StatementException("wrong bind parameters count", 0, _query);
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if (count == 0) return;
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if (mysql_stmt_bind_param(_pHandle, params) != 0)
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throw StatementException("mysql_stmt_bind_param() error ", _pHandle, _query);
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}
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void StatementExecutor::bindResult(MYSQL_BIND* result)
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{
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if (_state < STMT_COMPILED)
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throw StatementException("Satement is not compiled yet");
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if (mysql_stmt_bind_result(_pHandle, result) != 0)
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throw StatementException("mysql_stmt_bind_result error ", _pHandle, _query);
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}
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void StatementExecutor::execute()
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{
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if (_state < STMT_COMPILED)
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throw StatementException("Satement is not compiled yet");
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if (mysql_stmt_execute(_pHandle) != 0)
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throw StatementException("mysql_stmt_execute error", _pHandle, _query);
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_state = STMT_EXECUTED;
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_affectedRowCount = mysql_affected_rows(_pSessionHandle);
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}
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bool StatementExecutor::fetch()
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{
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if (_state < STMT_EXECUTED)
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throw StatementException("Satement is not executed yet");
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int res = mysql_stmt_fetch(_pHandle);
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if ((res != 0) && (res != MYSQL_NO_DATA))
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throw StatementException("mysql_stmt_fetch error", _pHandle, _query);
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return (res == 0);
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}
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bool StatementExecutor::fetchColumn(std::size_t n, MYSQL_BIND *bind)
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{
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if (_state < STMT_EXECUTED)
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throw StatementException("Satement is not executed yet");
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int res = mysql_stmt_fetch_column(_pHandle, bind, static_cast<unsigned int>(n), 0);
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if ((res != 0) && (res != MYSQL_NO_DATA))
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{
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std::ostringstream msg;
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msg << "mysql_stmt_fetch_column(" << n << ") error";
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throw StatementException(msg.str(), _pHandle, _query);
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}
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return (res == 0);
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}
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std::size_t StatementExecutor::getAffectedRowCount() const
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{
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return _affectedRowCount;
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}
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}}}
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