/*

* 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:  ?Description

*

*/

#ifndef __MDEINSTANCEITEM_H__

#define __MDEINSTANCEITEM_H__

#include <mdeitem.h>

enum TMdEInstanceType

	{

	EMdETypeObject = 1,

	EMdETypeRelation,

	EMdETypeEvent,

	EMdETypeProperty

	};

/**

 * Abstract base class for all instance items stored in the metadata engine database.

 */

NONSHARABLE_CLASS(CMdEInstanceItem) : public CMdEItem

	{

public:

	/* Destructor. */

	/**

	 * Destructor.

	 */

	virtual ~CMdEInstanceItem();

	/* Methods. */

	virtual TMdEInstanceType InstanceType() const = 0;

protected:

	/* Constructors. */

	/**

	 * Constructor.

	 */

	CMdEInstanceItem(CMdESession* aSession, TItemId aId);

	/**

	 * Second-phase constructor.

	 */

	void InstanceItemBaseConstruct();

	};

#endif  // __MDEINSTANCEITEM_H__