diff -r 000000000000 -r 32704c33136d ncdengine/provider/storage/inc/ncdstoragedataitem.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ncdengine/provider/storage/inc/ncdstoragedataitem.h	Tue Jan 26 12:06:03 2010 +0200
@@ -0,0 +1,64 @@
+/*
+* Copyright (c) 2006 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:  
+*
+*/
+
+
+#ifndef M_NCDSTORAGEITEMDATA_H
+#define M_NCDSTORAGEITEMDATA_H
+
+
+#include <s32strm.h> // RWriteStream, RReadStream
+
+
+/**
+ * Interface for database items.
+ *
+ * All items that are added to the database storage must implement this
+ *
+ * @note Do not try to use the database from ExternalizeL or InternalizeL since
+ * it leads to a DBMS-Table 11 panic.
+ *  
+ */
+class MNcdStorageDataItem
+{
+public:
+
+
+    /**
+     * Writes the implementing object's data to the stream
+     *
+     * @param aStream Write stream
+     */
+    virtual void ExternalizeL( RWriteStream& aStream ) = 0;
+
+
+    /**
+     * Reads the implementing object's data from the stream
+     * 
+     * @param aStream Read stream
+     */
+    virtual void InternalizeL( RReadStream& aStream ) = 0;
+
+
+protected:
+
+    virtual ~MNcdStorageDataItem()
+        {
+        }
+};
+
+
+#endif // M_NCDSTORAGEITEMDATA_H
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