/*

* Copyright (c) 2009 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:  Class to hold description about one relation

*

*/

#ifndef __MDSRELATIONDEF_H__

#define __MDSRELATIONDEF_H__

#include <e32base.h>

#include "mdsitemdef.h"

class CMdCSerializationBuffer;

/**

 *  Metadata relationdef class

 *

 *  This class is responsible for holding information about one relation

 *

 */

class CMdsRelationDef : public CMdsItemDef

    {

    friend class CMdsNamespaceDef;

public:

	/**

	 * Create new relation object

	 * @param aId id of relation

	 * @param aName name of relation

	 * @return pointer to new created relation

	 */

    static CMdsRelationDef* NewL( const TDesC& aName );

	/**

	 * Create new relation object

	 * @param aId id of relation

	 * @param aName name of relation

	 * @return pointer to new created relation

	 */

    static CMdsRelationDef* NewLC( const TDesC& aName );

    virtual ~CMdsRelationDef();

    TBool operator==( const CMdsRelationDef& aRelationDef ) const;

	inline TBool operator!=( const CMdsRelationDef& aRelationDef ) const;

	void StoreToDBL( const TDefId aNamespaceDefId );

	/**

     * Get required size of serialized buffer when this is serialized.

     *

     * @return required size of serialized buffer

     */

    TUint32 RequiredBufferSize();

    /**

     * Serialize own data to serialized buffer (correct position must be set 

     * before calling) and return new position of serialized buffer.

	 *

     * @param aBuffer  serialized buffer.

     */

    TMdCOffset SerializeL(CMdCSerializationBuffer& aBuffer, TMdCOffset aFreeSpace);

private:

	/**

	 * 2nd phase construction

	 * @param aName name of event

	 */

    void ConstructL( const TDesC& aName );

private: // data

    };

#include "mdsrelationdef.inl"

#endif // __MDSRELATIONDEF_H__