/*

* Copyright (c) 2010 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:  This class keeps a snap shot of the object id present in the MDS DB

*                Any change monitored by the mde harvester plugin, first checks in this

*                table and then updates the content in the lucene database

*

*/

#ifndef CPIX_MDE_DB_MANAGER_H_

#define CPIX_MDE_DB_MANAGER_H_

#include <e32def.h>

#include <e32base.h>

#include <d32dbms.h>

enum TCPixMdeDBManagerAPIReturnType

    {

    EOperationSuccess=0,

    EOperationFailure,

    EItemPresent,

    EItemNotPresent,

    EOperationUndefined

    };

typedef enum TCPixMdeDBManagerAPIReturnType TCPIXMDEDBAPIReturnType;

//Forward declaration

class CMDSEntity;

class CCPIXMDEDbManager : public CBase

    {

public:

    /**

     * Construction

     * @return instance of CCPIXMDEDbManager

     */

    static CCPIXMDEDbManager* NewL(const TUid& aPluginImplUid);

    /**

     * Construction

     * @return instance of CCPIXMDEDbManager

     */

    static CCPIXMDEDbManager* NewLC(const TUid& aPluginImplUid);

    /**

     * Destructor

     */    

    virtual ~CCPIXMDEDbManager();

    /**

     * Utility method Add an Object ID in the database

     * @param TUint& aObjectId

     * @param aMdsItem mds entity to be added

     * @return TCPixMdeDBManagerAPIReturnType

     */    

    TCPIXMDEDBAPIReturnType AddL(const TUint& aObjectId,CMDSEntity& aMdsItem);

    /**

     * Utility method Update an Object 

     * @param TUint& aObjectId

     * @param aMdsItem mds entity to be added

     * @return TCPixMdeDBManagerAPIReturnType

     */

    TCPIXMDEDBAPIReturnType UpdateL(const TUint& aObjId,CMDSEntity& aMdsItem);

    /*

     * Checks if item already exist in database

     * @param aObjectId object id of MDS Items

     * @return ETrue if exist else EFalse

     */

    TBool IsAlreadyExistL(const TUint& aObjectId);

    /*

     * Get the MDS item from Database

     * @param aKey object Id of item

     * @param aMdsItem reference of entity

     */

    void GetItemL(const TInt aKey, CMDSEntity& aMdsItem); 

    /**

     * Utility method remove an Object ID in the database

     * @param aObjectId Object ID

     * @return TCPixMdeDBManagerAPIReturnType

     */    

    TCPIXMDEDBAPIReturnType RemoveL(const TUint& aObjectId);

    /**

     * Utility method remove all items from database

     * @return TCPixMdeDBManagerAPIReturnType

     */    

    TCPIXMDEDBAPIReturnType ResetL();    

protected:

    /*

     * second phase constructor ConstructL

     */

    void ConstructL(const TUid& aPluginImplUid);

    /*

     * Default constructor

     */

    CCPIXMDEDbManager(); //Default constructor

private:

    void CreateMdeCPIXSyncDBL(const TDesC& aDatabaseFile); 

    /**

     * Creates a column set used to create a new database file.

     * @return column set.

     */

    CDbColSet* CreateColumnSetLC();

    void Rollback();

private:

    /**

     *  Session to File system

     */

    RFs  iFs;

    //Flag to check if database is opened or not

    TBool iOpened;

    /**

     * Interface to Notepad database     

     */ 

    RDbNamedDatabase iDatabase;    

    /**

     * handle to the table.owned

     */ 

    RDbTable iTable;

    };

#endif /* CPIXDOCFETCHER_H_ */