--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ncdengine/provider/server/inc/ncdoperationobserver.h	Thu Dec 17 08:51:10 2009 +0200
@@ -0,0 +1,81 @@
+/*
+* 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:   ?Description
+*
+*/
+	
+
+#ifndef M_NCD_OPERATION_OBSERVER_H
+#define M_NCD_OPERATION_OBSERVER_H
+
+#include <e32cmn.h>
+
+class CNcdBaseOperation;
+class CNcdQuery;
+class CNcdExpiredNode;
+
+/**
+ *  Server side observer interface for operations.
+ *
+ *  This interface offers child operations a way to inform their parent
+ *  operations of progress and completion events. It is also used 
+ *  to pass querys and expiration info to proxy side as sub-ops don't
+ *  usually have proxys.
+ *
+ *  @since S60 v3.2
+ */
+class MNcdOperationObserver
+    {
+    
+public:
+
+    /**
+     * Called when progress is made in the sub-op. 
+     * Should be used only if the parent really needs the progress information
+     * for e.g. forwarding it to the proxy.
+     *
+     * @param aOperation The calling sub-op.
+     */
+    virtual void Progress( CNcdBaseOperation& aOperation ) = 0;
+    
+    /**
+     * Called when sub-op has received a query.
+     *
+     * @param aOperation The calling sub-op.
+     * @param aQuery The query to forward.
+     */
+    virtual void QueryReceived( CNcdBaseOperation& aOperation,
+                                CNcdQuery* aQuery ) = 0;
+
+    /**
+     * Called when a sub-operation has been completed.
+     *
+     * @param aOperation The calling sub-op.
+     * @param aOperation aError KErrNone if completed correctly otherwise
+     *        system-wide error code.
+     */
+    virtual void OperationComplete( CNcdBaseOperation* aOperation,
+                                    TInt aError ) = 0;
+                                    
+    /**
+     * Called when a sub-op has expired nodes.
+     *
+     * @param aOperation The calling sub-op.
+     * @param aOperation Expired nodes.
+     */
+    virtual void ExpirationInfoReceived( CNcdBaseOperation* aOperation,
+        RPointerArray<CNcdExpiredNode>& aExpiredNodes ) = 0;
+    };
+    
+#endif //  M_NCD_OPERATION_OBSERVER_H