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StatementExecutor.h

//
// StatementExecutor.h
//
// $Id: //poco/1.3/Data/MySQL/include/Poco/Data/MySQL/StatementExecutor.h#2 $
//
// Library: Data
// Package: MySQL
// Module:  StatementExecutor
//
// Definition of the StatementExecutor class.
//
// Copyright (c) 2008, Applied Informatics Software Engineering GmbH.
// and Contributors.
//
// Permission is hereby granted, free of charge, to any person or organization
// obtaining a copy of the software and accompanying documentation covered by
// this license (the "Software") to use, reproduce, display, distribute,
// execute, and transmit the Software, and to prepare derivative works of the
// Software, and to permit third-parties to whom the Software is furnished to
// do so, all subject to the following:
// 
// The copyright notices in the Software and this entire statement, including
// the above license grant, this restriction and the following disclaimer,
// must be included in all copies of the Software, in whole or in part, and
// all derivative works of the Software, unless such copies or derivative
// works are solely in the form of machine-executable object code generated by
// a source language processor.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.
//


#ifndef Data_MySQL_StatementHandle_INCLUDED
#define Data_MySQL_StatementHandle_INCLUDED


#include <mysql.h>
#include "Poco/Data/MySQL/MySQLException.h"
#include <vector>


namespace Poco {
namespace Data {
namespace MySQL {


00053 class StatementExecutor
      /// MySQL statement executor.
{
public:
      enum State
      {
            STMT_INITED,
            STMT_COMPILED,
            STMT_EXECUTED
      };

      explicit StatementExecutor(MYSQL* mysql);
            /// Creates the StatementExecutor.

      ~StatementExecutor();
            /// Destroys the StatementExecutor.

      int state() const;
            /// Returns the current state.

      void prepare(const std::string& query);
            /// Prepares the statement for execution.

      void bindParams(MYSQL_BIND* params, size_t count);
            /// Binds the params.

      void bindResult(MYSQL_BIND* result);
            /// Binds result.

      void execute();
            /// Executes the statement.

      bool fetch();
            /// Fetches the data.

      bool fetchColumn(size_t n, MYSQL_BIND *bind);
            /// Fetches the column.

      operator MYSQL_STMT* ();
            /// Cast operator to native handle type.

private:
      StatementExecutor(const StatementExecutor&);
      StatementExecutor& operator=(const StatementExecutor&);

private:
      MYSQL_STMT* h;
      int _state;
      std::string _query;
};


//
// inlines
//
00108 inline StatementExecutor::operator MYSQL_STMT* ()
{
      return h;
}


} } } // namespace Poco::Data::MySQL


#endif // Data_MySQL_StatementHandle_INCLUDED

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