/*

* Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of the License "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description: 

* Declares SCR subsession implementation classes on the server side.

*

*/

/**

 @file

 @internalComponent

 @released

*/

#ifndef SCRSUBSESSION_H

#define SCRSUBSESSION_H

#include "scrserver.h"

#include "usifcommon.h"

namespace Usif

	{

	// forward declarations

	class CStatement;

	class CComponentEntry;

	class CComponentFilter;

	class CScrSubsession : public CScsSubsession

	/**

		Base SCR Subsession. Owns handle to an existing database session.

	 */

		{

	public:

		virtual ~CScrSubsession();

	protected:

		CScrSubsession(CScrSession &aSession);

		void ConstructL();

	public:

		CStatement *iStatement;

		// Pointer to the server object. Owned by the session object. 

		// Do NOT delete. Added to make the code cleaner and more consistent.

		CScrServer *iServer; 

		// Pointer to the session object. The owner session passes its own pointer. 

		// Do NOT delete. Added to make the code cleaner and more consistent.

		CScrSession *iSession;

		};

	class CCompViewSubsessionContext : public CBase

		{

	friend class CScrRequestImpl;

	friend class CComponentViewSubsession;

	public:

		~CCompViewSubsessionContext();

	private:

		TInt iLastSoftwareTypeId;

		HBufC* iLastSoftwareTypeName;

		RArray<TComponentId> iComponentFilterSuperset; ///< A helper array for the component filter. The filter conditions are split into two, and this variable is used for maintaing all components matching the first set of conditions.

		TBool iFilterSupersetInUse; ///< Specifies whether the filter superset array should be used when iterating over the filter query.		

		};

	class CComponentViewSubsession : public CScrSubsession

	/**

		This object is created for each component view subsession opened by the SCR client.

		Handles component view creation by using a provided filter and returns the row(s) of the view.

	 */

		{

	public:

		static CComponentViewSubsession* NewL(CScrSession& aSession);

		~CComponentViewSubsession();

		// Implement CScsSession

		TBool DoServiceL(TInt aFunction, const RMessage2& aMessage);

	private:

		CComponentViewSubsession(CScrSession& aSession);

		void ConstructL();

	private:

		CComponentFilter* iFilter;

		CComponentEntry *iComponentEntry;

		RPointerArray<CComponentEntry> iComponentEntryList;

		CCompViewSubsessionContext* iSubsessionContext;

		};	

	class CFileListSubsession : public CScrSubsession

	/**

		This object is created for each file list subsession opened by the SCR client

		to retrieve the list of files owned by a given component.

	 */

		{

	public:

		static CFileListSubsession* NewL(CScrSession& aSession);

		~CFileListSubsession();

		// Implement CScsSession

		TBool DoServiceL(TInt aFunction, const RMessage2& aMessage);

	private:

		CFileListSubsession(CScrSession& aSession);

	private:

		HBufC *iFilePath;

		RPointerArray<HBufC> iFileList;

		};	

	}// End of namespace Usif

#endif /* SCRSUBSESSION_H */