/*

* Copyright (c) 2007-2008 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:   

*

*/

#ifndef C_HNCONDITIONINTERFACE_H

#define C_HNCONDITIONINTERFACE_H

#include <e32base.h>

class CLiwGenericParamList;

enum TOperator

    {

        EOpeningBrace = '(',

        EClosingBrace = ')', 

        ELogicalAnd = '&',  

        ELogicalOr = '|',  

        ESpace = ' '

    };

/**

 * Condition Interface

 * 

 * This class is an interface for conditions.

 * 

 * @lib hnmetadatamodel

 * @since S60 5.0

 * @ingroup group_hnmetadatamodel

 */

NONSHARABLE_CLASS( CHnConditionInterface ) : public CBase

    {

public:

    /**

     * Returns result.

     *

     * @since S60 v3.2

     * @param aQueryResults Results of query.

     * @param aPos position the list.

     * @return True if condition is true, otherwise false.

     */    

    virtual TBool ResultL( const CLiwGenericParamList& aQueryResults, TInt aPos  = 0 ) = 0;

    };

#endif // C_HNCONDITIONINTERFACE_H