diff -r 1fc85118c3ae -r 870918037e16 locationlandmarksrefappfors60/Inc/LandmarksEngineBase.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/locationlandmarksrefappfors60/Inc/LandmarksEngineBase.h	Wed Sep 01 12:31:27 2010 +0100
@@ -0,0 +1,114 @@
+/*
+* Copyright (c) 2004-2005 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:  The base class for engines
+*
+*/
+
+
+#ifndef __LANDMARKS_ENGINE_BASE_H__
+#define __LANDMARKS_ENGINE_BASE_H__
+
+//  INCLUDES
+#include <e32base.h>
+#include <EPos_Landmarks.h>
+
+
+class CPosLandmarkDatabase;
+class CPosLandmarkSearch;
+class CLandmarksLmOpWrapper;
+
+
+
+/**
+*  Abstract base class for sub engines.
+*
+*/
+class CLandmarksEngineBase : public CActive
+    {
+    public: // Constructors and destructor
+
+        /**
+        * Destructor.
+        */
+        ~CLandmarksEngineBase();
+
+    public: // New functions
+
+        /**
+        * SetPrio updates the @ref iPriority data member.
+        *
+        * @param aPriority the priority to set
+        */
+        void SetPrio(CActive::TPriority aPriority);
+
+    protected: // From CActive
+
+        /**
+        * RunL should be implemented by sub classes.
+        */
+        virtual void RunL() = 0;
+        
+        /**
+        * DoCancel should be implemented by sub classes.
+        */
+        virtual void DoCancel() = 0;
+
+        /**
+        * RunError should be implemented by sub classes in case RunL might 
+        * leave.
+        */
+        virtual TInt RunError(TInt aError) = 0;
+
+    protected: // New functions
+
+        /**
+        * C++ constructor.
+        * 
+        * @param aDb an instance of the default landmark database
+        */
+        CLandmarksEngineBase(CPosLandmarkDatabase& aDb);
+
+        /**
+        * By default Symbian 2nd phase constructor is private.
+        */
+        void ConstructL();
+
+        /**
+        * SetPriorityAndSetActive updates the priority of this active object 
+        * if necessary and sets it to active. This method should be used by sub 
+        * classes rather than CActive::SetActive()
+        */
+        void SetPriorityAndSetActive();
+
+    protected: // Data
+
+        //! The default landmark database
+        CPosLandmarkDatabase& iDb;
+
+        //! Used for searching the database
+        CPosLandmarkSearch* iSearcher;
+
+        //! An active object wrapping a CPosLmOperation object
+        CLandmarksLmOpWrapper* iLmOpWrapper;
+
+    private: // Data
+
+        //! Used when setting priority of this active object
+        CActive::TPriority iPriority;
+    };
+
+
+#endif // __LANDMARKS_ENGINE_BASE_H__
+
+