1 /*

     2 * Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description:  Meta data Access Singleton

    15 *

    16 */

    17 

    18 

    19 #ifndef CMMMTPDPACCESSSINGLETON_H

    20 #define CMMMTPDPACCESSSINGLETON_H

    21 

    22 /**

    23 * Implements the MM MTP Data Priovider access singletons reference manager.

    24 */

    25 

    26 class RFs;

    27 class CMmMtpDpMetadataAccessWrapper;

    28 class MMTPDataProviderFramework;

    29 

    30 class CMmMtpDpAccessSingleton : public CObject

    31     {

    32 public:

    33     /**

    34      * Create Singleton instance

    35      * need Release(), if no use

    36      * @param aRFs RFs reference

    37      * @param aFramework framework reference

    38      */

    39     IMPORT_C static void CreateL( RFs& aRfs, 

    40         MMTPDataProviderFramework& aFramework );

    41     

    42     /**

    43      * release singleton instance

    44      */

    45     IMPORT_C static void Release();

    46     

    47     /**

    48      * get metadata access wrapper reference

    49      */

    50     IMPORT_C static CMmMtpDpMetadataAccessWrapper& GetAccessWrapperL();

    51     

    52     /**

    53      * do some special process with assess DBs when receives opensession command

    54      */

    55     IMPORT_C static void OpenSessionL();

    56     

    57     /**

    58      * do some special process with assess DBs when receives closesession command

    59      */

    60     IMPORT_C static void CloseSessionL();

    61     

    62 private:

    63     /*

    64      * get singleton instance, for internal use

    65      */

    66     static CMmMtpDpAccessSingleton* Instance();

    67     

    68     /*

    69      * 2-phase construction

    70      */

    71     static CMmMtpDpAccessSingleton* NewL( RFs& aRfs, 

    72         MMTPDataProviderFramework& aFramework );

    73     

    74     /*

    75      * 2-phase construction

    76      */

    77     void ConstructL( RFs& aRfs, 

    78         MMTPDataProviderFramework& aFramework );

    79     /*

    80      * destruction

    81      */

    82     ~CMmMtpDpAccessSingleton();

    83     

    84 private:

    85     CMmMtpDpMetadataAccessWrapper* iWrapper;

    86     };

    87 

    88 #endif // CMMMTPDPACCESSSINGLETON_H