/*

* Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "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:  MDE session utility class

 *

*/

#ifndef MDSSESSIONOBJECTUTILS_H_

#define MDSSESSIONOBJECTUTILS_H_

#include <mdccommon.h>

#include <mdesession.h>

#include <mdequery.h>

//Forward declaration

class CMdeObject;

class CMdsSessionObjectUtils : public CBase,

                               public MMdESessionObserver,

                               public MMdEQueryObserver

    {

public:

    /*

     * NewL construction

     * @return instance of mds session utils

     */

    static CMdsSessionObjectUtils* NewL();

    /*

     * NewLC construction

     * @return instance of mds session utils

     */

    static CMdsSessionObjectUtils* NewLC();

    /*

     * Destructor

     */

    virtual ~CMdsSessionObjectUtils();

    /*

     * InitializeL 

     */

    void InitializeL(); //Open valid mde Sessions

public:

    //From MMdESessionObserver

    void HandleSessionOpened(CMdESession& aSession, TInt aError);

    void HandleSessionError(CMdESession& aSession, TInt aError);

    //From MMdEQueryObserver

    void HandleQueryNewResults(CMdEQuery& aQuery,

                               TInt aFirstNewItemIndex,

                               TInt aNewItemCount);

    void HandleQueryCompleted(CMdEQuery& aQuery, TInt aError);

private:

    /*

     * Second phase constructor

     */

    void ConstructL();

    /*

     * default constructor

     */

    CMdsSessionObjectUtils();

public:

    /*

     * GetSession

     * @return instance of valid mde session

     */

    CMdESession* GetSession(); //get valid session

    /*

     * GetObjectL

     * @param TItemId& aItemId mde item id to get

     * @param TDesC& aObjectDefName object definition

     * @return reference of object 

     */

    CMdEObject& GetObjectL(const TItemId& aItemId,const TDesC& aObjectDefName);

private:

    CMdESession*     iMdeSession; //Valid mde session

    CMdEObjectQuery* iQuery; // metadata query

    CActiveSchedulerWait* iWait; //Nested AO wait

    };

#endif /* MDSSESSIONOBJECTUTILS_H_ */