/*

* 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 deserialize client query cliteria

*

*/

#ifndef __MDSQUERYCRITERIADESERIALIZATION_H__

#define __MDSQUERYCRITERIADESERIALIZATION_H__

#include <e32cmn.h>

#include <e32def.h>

#include <e32des8.h>

#include "mdccommon.h"

#include "mdcserializationbuffer.h"

// added for serialization definitions !!

#include "mdscommoninternal.h"

// end

/**

 * Query criteria serialization.

 */

class CMdSQueryCriteriaDeserialization : public CBase

	{

	friend class CMdSFindSqlClause;

public:

	/* Constructors and destructor. */

	/**

	 * Constructs a new serialized query criteria.

	 * @param aCondition  root logic condition to serialize

	 *

	 * @return  query criteria serialization instance

	 *

	 * @leave KErrNotSupported result mode and query type don't match

	 * @leave KErrCompletion   result mode is EModeDistinctValues and query 

	 *                         criteria is incorrect

	 */

	static CMdSQueryCriteriaDeserialization* NewL(CMdCSerializationBuffer& aSerializationBuffer);

	/**

	 * Constructs a new serialized query criteria and leaves it in the

	 * cleanup stack.

	 * @param aCondition  root logic condition to serialize

	 *

	 * @return  query criteria serialization instance

	 *

	 * @leave KErrNotSupported result mode and query type don't match

	 * @leave KErrCompletion   result mode is EModeDistinctValues and query 

	 *                         criteria is incorrect

	 */

	static CMdSQueryCriteriaDeserialization* NewLC(CMdCSerializationBuffer& aSerializationBuffer);

	/**

	 * Destructor.

	 */

	virtual ~CMdSQueryCriteriaDeserialization();

    /**

    * Returns pointer to the serialized data (read only)

    */

    TPtr8 Buffer() const;

    /**

    * Returns pointer to the serialized data (read only)

    */

    const TPtr8* BufferPtr() const;

    /**

    * Returns pointer to the serialization buffer

    */

    CMdCSerializationBuffer& SerializationBuffer();

protected:

	/**

	* Returns query's result mode.

	*

	* @return query result mode

	*/

	TQueryResultMode ResultModeL();

	/**

	* Returns query's type.

	*

	* @return query type

	*/

	TQueryType QueryTypeL();

	/**

	* Returns query's namespace definition ID.

	*

	* @return namespace definition ID

	*/

	TDefId NamespaceDefIdL();

	/**

	* Returns query's object definition ID.

	*

	* @return object definition ID

	*/

	TDefId ObjectDefIdL();

	/**

	* Moves position to begin of query's object definitions IDs.

	* 

	* @return if offset is KNoOffset return EFalse, else return ETrue and move 

	*         to that position

	*/

	TBool ObjectDefsIdsL();

	/**

	* Returns query's result's limit value.

	*

	* @return limit value

	*/

	TUint32 LimitL();

	/**

	* Returns query's internal optimization flags.

	*

	* @return query's internal optimization flags

	*/

	TUint32 OptimizationFlagsL();

	/**

	* Returns query's result's offset value.

	*

	* @return offset value

	*/

	TUint32 OffsetL();

	/**

	* Moves position to begin of query's root condition.

	*/

	void RootConditionL();

	/**

	* Moves position to begin of query's order rules.

	*/

	void OrderRulesL();

	/**

	* Moves position to begin of query's property filter.

	*/

	void PropertyFiltersL();

private:

	/* Constructors. */

	/**

	 * Constructor.

	 */

	CMdSQueryCriteriaDeserialization(CMdCSerializationBuffer& aSerializedBuffer);

private:

    /** Serialized query criteria. */

    CMdCSerializationBuffer& iSerializedBuffer;

	};

#endif  // __MDEQUERYCRITERIASERIALIZATION_H__