1 /*

     2 * Copyright (c) 2006 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:  

    15 *

    16 */

    17 

    18 

    19 #ifndef M_NCDSTORAGEITEMDATA_H

    20 #define M_NCDSTORAGEITEMDATA_H

    21 

    22 

    23 #include <s32strm.h> // RWriteStream, RReadStream

    24 

    25 

    26 /**

    27  * Interface for database items.

    28  *

    29  * All items that are added to the database storage must implement this

    30  *

    31  * @note Do not try to use the database from ExternalizeL or InternalizeL since

    32  * it leads to a DBMS-Table 11 panic.

    33  *  

    34  */

    35 class MNcdStorageDataItem

    36 {

    37 public:

    38 

    39 

    40     /**

    41      * Writes the implementing object's data to the stream

    42      *

    43      * @param aStream Write stream

    44      */

    45     virtual void ExternalizeL( RWriteStream& aStream ) = 0;

    46 

    47 

    48     /**

    49      * Reads the implementing object's data from the stream

    50      * 

    51      * @param aStream Read stream

    52      */

    53     virtual void InternalizeL( RReadStream& aStream ) = 0;

    54 

    55 

    56 protected:

    57 

    58     virtual ~MNcdStorageDataItem()

    59         {

    60         }

    61 };

    62 

    63 

    64 #endif // M_NCDSTORAGEITEMDATA_H