/*
* 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 the License "Symbian Foundation License v1.0" to Symbian Foundation members and "Symbian Foundation End User License Agreement v1.0" to non-members
* which accompanies this distribution, and is available
* at the URL "http://www.symbianfoundation.org/legal/licencesv10.html".
*
* Initial Contributors:
* Nokia Corporation - initial contribution.
*
* Contributors:
*
* Description:  PosLmCategorySerialization class definition
*
*/


#ifndef __EPOS_POSCATEGORYSERIALIZATION_H_
#define __EPOS_POSCATEGORYSERIALIZATION_H_

#include <e32base.h>

class CPosLandmarkCategory;

/**
 *  This class contains helper methods for landmark category serialization.
 *  A landmark category can be packed into a buffer with PackL method and unpacked
 *  back with UnpackL method.
 *
 *  @lib eposlandmarks.lib
 *  @since S60 3.1
 */
class PosLmCategorySerialization
    {
    public:
        /** Packs category object into a buffer.
         *
         *  All the data is preserved when packing. Database information is not stored.
         *  Packed category can be unpacked with @ref UnpackL method.
         *
         *  @param aCategory The category to be packed.
         *  @return The buffer with the category data packed.
         *          Ownership is transferred to the client.
         */
        IMPORT_C static HBufC8* PackL( const CPosLandmarkCategory& aCategory );

        /** Unpacks a category object, packed with @ref PackL method, from buffer.
         *
         *  All the data is preserved when packing, and restored exactly
         *  when unpacking. It means that category ID is valid only for the database,
         *  this category was read from.
         *
         *  @param aBuffer The buffer containing category.
         *  @return The category unpacked. Ownership is transferred to client.
         *  @leave KErrCorrupt if buffer does not contain valid category package.
         */
        IMPORT_C static CPosLandmarkCategory* UnpackL( const TDesC8& aBuffer );
    };

#endif // __EPOS_POSCATEGORYSERIALIZATION_H_
