diff -r 000000000000 -r c53acadfccc6 metadataengine/client/inc/mdeasynchronousfindao.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/metadataengine/client/inc/mdeasynchronousfindao.h	Mon Jan 18 20:34:07 2010 +0200
@@ -0,0 +1,164 @@
+/*
+* Copyright (c) 2005-2009 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:  Asynchronous query active object
+*
+*/
+
+
+#ifndef __MDEASYNCHRONOUSFINDAO_H__
+#define __MDEASYNCHRONOUSFINDAO_H__
+
+// INCLUDE FILES
+#include <e32base.h>
+#include <e32svr.h>
+#include <badesca.h>
+
+#include <mdccommon.h>
+
+// forward declarations
+class CMdEQuery;
+class CMdESessionImpl;
+class RMdEEngineSession;
+class CMdEInstanceItem;
+class CMdEQueryCriteriaSerialization;
+
+/**
+* MdESessionMonitorAO
+* An abstract active object that is used for multiple purposes in
+* MdE client side.
+*/
+NONSHARABLE_CLASS(CMdEAsynchronousFindAO) : public CActive
+    {
+    public: // Constructors and destructors
+
+        /**
+        * NewL.
+        * Two-phased constructor.
+        * Creates a CCSAsyncRequestHandler object using two phase construction,
+        * and return a pointer to the created object.
+        * @param aSession The engine session
+        * @param aType the query type
+        * @return A pointer to the created instance of CCSAsyncRequestHandler.
+        */
+        static CMdEAsynchronousFindAO* NewL( CMdEQuery& aQuery,
+            CMdESessionImpl& aSessionImpl, RMdEEngineSession& aSession );
+
+        /**
+         * NewL.
+         * Two-phased constructor.
+         * Creates a CCSAsyncRequestHandler object using two phase construction,
+         * and return a pointer to the created object.
+         * @param aSession The engine session
+         * @param aType the query type
+         * @return A pointer to the created instance of CCSAsyncRequestHandler.
+         */
+         static CMdEAsynchronousFindAO* NewLC( CMdEQuery& aQuery,
+             CMdESessionImpl& aSessionImpl, RMdEEngineSession& aSession );
+
+        /**
+        * ~CCSAsyncRequestHandler.
+        * Destructor.
+        * Destroys the object and release all memory objects.
+        */
+        virtual ~CMdEAsynchronousFindAO();
+
+    public: // New functions
+
+        /**
+        * Starts find
+        */
+        void DoFindL( TUint aMaxCount, TUint aNotifyCount );
+
+    protected: // Functions from base classes
+
+	    /**
+	     * Calls notify results on CMdEQuery class (one of its subclasses)
+	     * @param aStatus the asynchronous find status
+	     */
+	    void DoNotifyResultsL( TInt aStatus );
+    
+        /**
+        * Calls notify on CMdEQuery class (one of its subclasses)
+        * @param aStatus the asynchronous find status
+        */
+        void DoNotifyL( TBool aNewResults, TInt aStatus );
+
+        /**
+        * From CActive
+        * Callback function.
+        * Invoked to handle responses from the server.
+        */
+        void RunL();
+
+		/**
+		* From CActive
+		*/
+		TInt RunError(TInt aError);
+
+        /**
+        * From CActive
+        * Cancels any outstanding operation.
+        */
+        void DoCancel();
+
+    private: // Constructors and destructors
+
+        /**
+        * CCSAsyncRequestHandler.
+        * Performs the first phase of two phase construction.
+        * @param aSession The engine session
+        * @param aType the query type
+        */
+        CMdEAsynchronousFindAO( CMdEQuery& aQuery,
+            CMdESessionImpl& aSessionImpl, RMdEEngineSession& aSession );
+
+        /**
+        * ConstructL.
+        * Performs the second phase construction of a
+        * CCSAsyncRequestHandler object.
+        */
+        void ConstructL();
+
+
+    private: // Data
+
+        /** the query object */
+        CMdEQuery& iQuery;
+
+        /** The session impl class */
+        CMdESessionImpl& iSessionImpl;
+
+        /** The engine session */
+        RMdEEngineSession& iSession;
+
+        /** package that will receive result hierarchy size */
+        TPckgBuf<TInt> iResultSize;
+
+        /** query results (stored here only temporarily) */
+        RPointerArray<CMdEInstanceItem> iResultList;
+
+        /** ID query results (stored here only temporarily) */
+        RArray<TItemId> iIdResultList;
+
+        /** Count query result */
+        TUint32 iCountResult;
+
+		CMdEQueryCriteriaSerialization* iConditionBuffer;
+
+		/** distinct query results (stored here only temporarily) */
+		CDesCArray* iDistinctResults;
+    };
+
+
+#endif //__MDEASYNCHRONOUSFINDAO_H__