diff -r 000000000000 -r e6b17d312c8b imsrv_plat/ximp_core_feature_plugin_api/inc/ximpapidataobjbase.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/imsrv_plat/ximp_core_feature_plugin_api/inc/ximpapidataobjbase.h	Thu Dec 17 08:54:49 2009 +0200
@@ -0,0 +1,96 @@
+/*
+* 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:  API data object base implementation.
+*
+*/
+
+#ifndef CXIMPAPIDATAOBJBASE_H
+#define CXIMPAPIDATAOBJBASE_H
+
+#include "ximpapiobjbase.h"
+
+class RWriteStream;
+class RReadStream;
+
+
+/**
+ * API event object base.
+ *
+ * Concrete event types must implement static
+ * NewFromStreamLC() constructor and event types
+ * must be registered to event automation system.
+ *
+ * For details, see XIMPEventCodec implementation.
+ * @lib ximpdatamodel.dll
+ * @since S60 v3.2
+ */
+class CXIMPApiDataObjBase : public CXIMPApiObjBase
+    {
+public:
+
+    enum { KClassId = XIMPIMP_CLSID_CXIMPAPIDATAOBJBASE };
+    
+public:
+
+    IMPORT_C CXIMPApiDataObjBase();
+
+    IMPORT_C virtual ~CXIMPApiDataObjBase();
+
+public:
+
+    /**
+     * Compare the content of this data object with another 
+     * data object of the same type.
+     * Volatile things (e.g. timestamps) are not compared, but things like user
+     * ids and such are.
+     * @return ETrue if the content matches.
+     */
+    virtual TBool EqualsContent( const CXIMPApiDataObjBase& aOtherInstance ) const = 0;
+
+    /**
+     * Virtual extenalize method for concrete data
+     * objects to externalize their data.
+     */
+    virtual void ExternalizeL( RWriteStream& aStream ) const = 0;
+    };
+
+
+
+/**
+ * Declares CXIMPApiDataObjBase methods for
+ * concrete event implementation class header (.h) file.
+ */
+#define XIMPIMP_DECLARE_DATAOBJ_BASE_METHODS \
+    void ExternalizeL( RWriteStream& aStream ) const; \
+    IMPORT_C static CXIMPApiDataObjBase* NewFromStreamLC( RReadStream& aStream ); \
+    virtual TBool EqualsContent( const CXIMPApiDataObjBase& aOtherInstance ) const; \
+
+#define XIMPIMP_DECLARE_DATAOBJ_BASE_PRIV_METHODS   \
+    // void ConstructL( RReadStream& aStream ); \
+
+
+/**
+  * Implements a NewFromStreamLC method
+  */
+#define XIMPIMP_IMPLEMENT_DATAOBJ_NEWFROMSTREAM( TheClass ) \
+EXPORT_C CXIMPApiDataObjBase* TheClass::NewFromStreamLC( RReadStream& aStream ) \
+    { \
+    TheClass* self = new( ELeave ) TheClass; \
+    CleanupStack::PushL( self ); \
+    self->ConstructL(); \
+    self->InternalizeL( aStream ); \
+    return self; \
+    } \
+
+#endif // CXIMPAPIDATAOBJBASE_H