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PooledSessionImpl.h

//
// PooledSessionImpl.h
//
// $Id: //poco/1.3/Data/include/Poco/Data/PooledSessionImpl.h#2 $
//
// Library: Data
// Package: SessionPooling
// Module:  PooledSessionImpl
//
// Definition of the PooledSessionImpl class.
//
// Copyright (c) 2006, 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_PooledSessionImpl_INCLUDED
#define Data_PooledSessionImpl_INCLUDED


#include "Poco/Data/Data.h"
#include "Poco/Data/SessionImpl.h"
#include "Poco/Data/PooledSessionHolder.h"
#include "Poco/AutoPtr.h"


namespace Poco {
namespace Data {


class SessionPool;


00056 class Data_API PooledSessionImpl: public SessionImpl
      /// PooledSessionImpl is a decorator created by
      /// SessionPool that adds session pool
      /// management to SessionImpl objects.
{
public:
      PooledSessionImpl(PooledSessionHolder* pHolder);
            /// Creates the PooledSessionImpl.

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

      // SessionImpl
      StatementImpl* createStatementImpl();
      void begin();
      void commit();
      void rollback();
      void close();
      bool isConnected();
      bool isTransaction();
      void setFeature(const std::string& name, bool state); 
      bool getFeature(const std::string& name);
      void setProperty(const std::string& name, const Poco::Any& value);
      Poco::Any getProperty(const std::string& name);
      
protected:
      SessionImpl* access();
            /// Updates the last access timestamp,
            /// verifies validity of the session
            /// and returns the session if it is valid.
            ///
            /// Throws an SessionUnavailableException if the
            /// session is no longer valid.
            
      SessionImpl* impl();
            /// Returns a pointer to the SessionImpl.
                        
private:    
00094       Poco::AutoPtr<PooledSessionHolder> _pHolder;
};


//
// inlines
//
00101 inline SessionImpl* PooledSessionImpl::impl()
{
      return _pHolder->session();
}


} } // namespace Poco::Data


#endif // Data_PooledSessionImpl_INCLUDED

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