/*

* Copyright (c) 2005-2009 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 for database import/export and maintenance*

*/

#ifndef __MDSMAINTENANCEENGINE_H__

#define __MDSMAINTENANCEENGINE_H__

#include <e32base.h>

#include "mdccommon.h"

// DEFINITIONS

_LIT( KSchemaImportFile, "C:\\Private\\200009F3\\schema.mde" );

_LIT( KSchemaRomImportFile, "Z:\\Private\\200009F3\\schema.mde" );

// forward declarations

class CMdsSchema;

class CMdSManipulationEngine;

class CMdCSerializationBuffer;

class CMdSSqlDbMaintenance;

/**

* Abstract class for validating and creating tables.

*/

class CMdSMaintenanceEngine : public CBase

    {

    public: // Constructors and destructor

        /**

        * NewL.

        * Two-phased constructor.

        */

        static CMdSMaintenanceEngine* NewL();

        /**

        * NewL.

        * Two-phased constructor.

        */

        static CMdSMaintenanceEngine* NewLC();

        virtual ~CMdSMaintenanceEngine();

    public: // Operations

  	    /**

	    * Imports external schema to database.

        * @param aSchema schema that is on phone currently

        * @param aFileName name of the import file

	    */        

        void ImportSchemaL( CMdsSchema& aSchema, const TDesC16& aFileName, TUint32 aVendorId );

        CMdsSchema* ImportSchemaTestL( const TDesC16& aFileName );

  	    /**

	    * Imports metadata to database.

        * @param aSchema schema that is on phone currently

        * @param aFileName name of the import file

	    */        

        TInt ImportMetadataL( CMdSManipulationEngine& aManipulate, 

        					     CMdsSchema& aSchema, const TDesC16& aFileName );

  	    /**

	    * Exports metadata to file.

        * @param aFileName name of the file where to export

        * @param aSchema current schema

        * @param aHierarchyArray an array of criteria what to export

	    */        

        void ExportMetadataL( CMdsSchema& aSchema, const TDesC16& aFileName, 

                              CMdCSerializationBuffer& aItems );

        /**

         * Stores drive media id to the DB.

         */

        void StoreDriveMediaIdsL();

  	    /**

	    * Creates metadata tables to database.

	    */

	    void InstallL( CMdSManipulationEngine& aManipulate, CMdsSchema& aSchema );

        /**

        * Loads schema from database

        */

        void LoadSchemaL( CMdsSchema& aSchema );

        /**

         * performs initialization (at server start) for default database

         */

        static void InitConnectionL();

        /**

         * closes default database

         */

        static void CloseDatabase();

        /**

         * close and delete default database

         */

		static void DeleteDatabase();

		TInt FailedImports() const

			{

			return iFailedImports;

			};

    private: // Constructors and destructors

        /**

        * CMdSManipulationEngine.

        * C++ default constructor.

        * @param .

        */

        CMdSMaintenanceEngine();

        /**

        * ConstructL.

        * 2nd phase constructor.

        */

        void ConstructL();

	private: // Member data

        /**

         * database validation and creation

         */

        CMdSSqlDbMaintenance* iMaintenance;

        TInt iFailedImports;

    };

#endif // __MDSMAINTENANCEENGINE_H__