diff -r 000000000000 -r ba25891c3a9e ncdengine/inc/ncdproviderobserver.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ncdengine/inc/ncdproviderobserver.h	Thu Dec 17 08:51:10 2009 +0200
@@ -0,0 +1,48 @@
+/*
+* 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_NCDPROVIDEROBSERVER_H
+#define M_NCDPROVIDEROBSERVER_H
+
+#include <e32cmn.h>
+#include "catalogsarray.h"
+
+class MNcdNode;
+
+/**
+ * Observer interface for provider generic events
+ *
+ * Provider users should implement this interface to be able to receive
+ * notifications from the root node provider
+ */
+class MNcdProviderObserver
+    {
+    
+public:
+
+    /**
+     * Called when information of expired nodes has been received. Users must
+     * re-load these nodes to get updated data.
+     *
+     * @param aExpiredNodes A list of expired nodes in need of re-loading.
+     */
+    virtual void ForceExpirationInformationReceived(
+        RCatalogsArray< MNcdNode >& aExpiredNodes ) = 0;
+    };
+    
+#endif //  M_NCDPROVIDEROBSERVER_H