/*

* Copyright (c) 2006 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:  Codec to pack and unpack data objects.

*

*/

#ifndef PRESENCEAPIDATAOBJFACTORY_H

#define PRESENCEAPIDATAOBJFACTORY_H

#include <e32base.h>

#include "presencetypehelpers.h"

#include "ximpapidataobjbase.h"

// internal interface for the factory

#include "apidataobjfactory.h"

class RReadStream;

class RWriteStream;

/**

 * Codec to pack and unpack data object arrays.

 *

 * @lib ximpdatamodel.dll

 * @since S60 v3.2

 */

NONSHARABLE_CLASS( CPresenceApiDataObjFactory ) : public CBase,

                                                  public MApiDataObjFactory

    {

public:

    static CPresenceApiDataObjFactory* NewL();

    // From base class

    CXIMPApiDataObjBase* NewFromStreamLC( TInt32 aDataObjInterfaceId,

                                          RReadStream& aStream );

    /**

     * Unpacks a request parameter array from a 

     * descriptor back to array format.

     * @param aDataObjArrayData The packed array

     * @param aArray The array which to fill

     */

    static void InternalizeL( 

            RReadStream& aStream,

            RPresenceReqParamArray& aArray

            );

    /**

     * Packs a given request parameter array into 

     * a stream.

     * @param aWs The stream to pack into

     * @param aArray The array to pack

     */    

    static void ExternalizeL( 

            RWriteStream& aWs,

            const RPresenceReqParamArray& aArray

            );

    /**

     * Internalize a CXIMPApiDataObjBase-derived object

     * from the given stream, ownership is returned to the caller.

     * @param aStream The stream

     * @return The object instance

     */

    static CXIMPApiDataObjBase* InternalizeLC(

            RReadStream& aStream );

    /**

     * Externalize a CXIMPApiDataObjBase-derived object

     * to the given stream.

     * @param aWs The write stream

     * @param aDataObj The data object

     */

    static void ExternalizeL(

            RWriteStream& aWs,

            const CXIMPApiDataObjBase& aDataObj );

    /*

     * Packs a given array into a stream.

     * @param aStream The stream

     * @param aArray The array

     */

    template< class INFOIMP>    

        static inline void InternalizeL( 

                RReadStream& aStream,

                RPointerArray<INFOIMP>& aArray

                );

    /**

     * Unpacks an array of info fields back to array format.

     * @param aWs The stream

     * @param aArray The array which to fill

     */

    template< class INFOIMP >

        static inline void ExternalizeL( 

                RWriteStream& aWs,

                const RPointerArray<INFOIMP>& aArray

                );

    ~CPresenceApiDataObjFactory();

private:

    CPresenceApiDataObjFactory();

    void ConstructL();

    };

// template methods need inline implementation

#include "presenceapidataobjfactory.inl"

#endif // PRESENCEAPIDATAOBJFACTORY_H