/*

* Copyright (c) 2007 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: provides handling of indexing in database

*

*

*/

#ifndef EPOS_CPOSLMDBINDEXMANAGER_H_

#define EPOS_CPOSLMDBINDEXMANAGER_H_

#include <e32base.h>

class CPosLmServer;

class CPosLmNameIndex;

class CPosLmLocalDbAccess;

class CPosLmIndexManager : public CBase

    {

    class CItem : public CBase

        {

        public:

            ~CItem();

            HBufC* iDbUri;

            CPosLmLocalDbAccess* iDbAccess;

            CPosLmNameIndex* iIndex;

            TInt iRefCount;

            TBool iHasReadLock;

            TBool iHasWriteLock;

        };

    public:

        static CPosLmIndexManager* NewL( CPosLmServer& aServer );

    	~CPosLmIndexManager();

        TInt Find( const TDesC& aUri ) const;

        CPosLmNameIndex& Index( const TDesC& aUri );

        void AddIndexUserL( const TDesC& aUri );

        void RemoveIndexUser( const TDesC& aUri );

        TBool HasAnyLock( const TDesC& aUri ) const;

        TBool HasWriteLock( const TDesC& aUri ) const;

    protected:

        CPosLmIndexManager( CPosLmServer& aServer );

        void ConstructL();

        void LoadIndexL( const TDesC& aUri );

        void SaveIndexL( CItem& aItem );

        TTime DatabaseStampL( const TDesC& aDbUri ) const;

        TBool IsIndexValidL( const TTime& aDbStamp, const TTime& aIndexStamp ) const;

    private:

        RPointerArray<CItem>    iIndexes;

        CPosLmServer&			iServer;

    };

#endif /*EPOS_CPOSLMDBINDEXMANAGER_H_*/