--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/locationtriggering/ltserver/ltserverlogic/src/lbtstratergycontainer.cpp	Wed Nov 03 23:28:39 2010 +0530
@@ -0,0 +1,220 @@
+/*
+* Copyright (c) 2006,2007 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:  This class is responsible for loading,upgrading and holding 
+*				 the stratergy ecom plugin
+*
+*/
+
+
+// INCLUDE FILES
+#include <e32base.h>
+#include <ecom.h>
+#include <implementationinformation.h>
+#include <e32property.h>
+#include "lbtstratergycontainer.h"
+#include "lbtstatuspskeys.h"
+#include "lbtstrategybase.h"
+#include "lbttriggeringsupervisionobserver.h"
+#include "lbtlogger.h"
+
+// ======== LOCAL FUNCTIONS =========
+// static cleanup function
+static void RImpleInfoPtrArrayCleanup( TAny* aArray )
+	{
+	static_cast<RImplInfoPtrArray*>( aArray )->ResetAndDestroy();
+	}
+
+// ======== MEMBER FUNCTIONS ========
+
+// ---------------------------------------------------------------------------
+// CLbtStratergyContainer::NewL
+// Symbian Two - phase constructor
+// ---------------------------------------------------------------------------
+//
+CLbtStratergyContainer* CLbtStratergyContainer::NewL()
+	{
+	FUNC_ENTER("CLbtStratergyContainer::NewL");
+	CLbtStratergyContainer* self = new ( ELeave ) CLbtStratergyContainer;
+    CleanupStack::PushL( self );
+    self->ConstructL();    
+    CleanupStack::Pop();
+    return self;
+	}
+
+// ---------------------------------------------------------------------------
+// CLbtStratergyContainer::ConstructL
+// ---------------------------------------------------------------------------
+//
+void CLbtStratergyContainer::ConstructL()
+	{
+	FUNC_ENTER("CLbtStratergyContainer::ConstructL");
+	iEComSession = &(REComSession::OpenL());
+	iStratergy = NULL;
+	
+	User::LeaveIfError( iProperty.Attach(KPSUidLbtStatusInformation, 
+                                         KLbtLocationTriggeringSupervisionStatus,
+                                         EOwnerThread) );
+  }
+
+// ---------------------------------------------------------------------------
+// CLbtStratergyContainer::~CLbtStratergyContainer
+// ---------------------------------------------------------------------------
+//
+CLbtStratergyContainer::~CLbtStratergyContainer()
+	{
+	FUNC_ENTER("CLbtStratergyContainer::~CLbtStratergyContainer");
+	delete iStratergy;
+	Cancel();
+	if(iEComSession)
+		{
+		iEComSession->Close();
+		}
+	
+    // This has to be called to free resources by
+    // ECom Framework. Failing this call memory is leaked
+	REComSession::FinalClose();
+	iProperty.Close();
+	}
+	
+// ---------------------------------------------------------------------------
+// CLbtStratergyContainer::CLbtStratergyContainer
+// ---------------------------------------------------------------------------
+//
+CLbtStratergyContainer::CLbtStratergyContainer()
+    : CActive(EPriorityStandard)
+	{
+	FUNC_ENTER("CLbtStratergyContainer::CLbtStratergyContainer");
+	CActiveScheduler::Add(this);
+	}
+
+// ---------------------------------------------------------------------------
+// CLbtStratergyContainer::LoadStratergyL
+// ---------------------------------------------------------------------------
+//
+void CLbtStratergyContainer::LoadStratergyL(MLbtTriggeringSupervisionObserver* aPtr)
+	{
+	FUNC_ENTER("CLbtStratergyContainer::LoadStratergyL");
+	RImplInfoPtrArray implArray;
+	REComSession::ListImplementationsL(KLocAcquisitionStrategyInterfaceUid, implArray);	
+	if(implArray.Count() != 1)
+		{
+		implArray.ResetAndDestroy();
+		// Leave if there are more than one or no 
+		// implementation of stratergy
+		User::Leave(KErrNotFound);
+		}
+	TCleanupItem arrayCleanup( RImpleInfoPtrArrayCleanup, &implArray );
+	CleanupStack::PushL(arrayCleanup);
+	CImplementationInformation* info = implArray[0];
+	iStratergy = CLbtStrategyBase::NewL(aPtr);
+	iVersion = info->Version();
+	CleanupStack::PopAndDestroy(); // implArray
+	
+	iProperty.Set(KPSUidLbtStatusInformation, 
+                  KLbtLocationTriggeringSupervisionStatus, 
+                  ELbtLocationTriggeringSupervisionSuccessful);
+                                     
+  // request ecom framework for ecom change notification
+	iEComSession->NotifyOnChange(iStatus);	
+	SetActive();
+	}
+
+// ---------------------------------------------------------------------------
+// CLbtStratergyContainer::Stratergy
+// ---------------------------------------------------------------------------
+//
+CLbtStrategyBase* CLbtStratergyContainer::Stratergy()
+	{
+	FUNC_ENTER("CLbtStratergyContainer::Stratergy");
+	return iStratergy;
+	}
+
+// ---------------------------------------------------------------------------
+// CLbtStratergyContainer::RunL
+// ---------------------------------------------------------------------------
+//
+void CLbtStratergyContainer::RunL()
+	{
+	FUNC_ENTER("CLbtStratergyContainer::RunL");
+	// request ecom framework for notification
+	iEComSession->NotifyOnChange(iStatus);
+	SetActive();
+	
+	RImplInfoPtrArray implArray;
+	REComSession::ListImplementationsL(KLocAcquisitionStrategyInterfaceUid, implArray);
+	CleanupClosePushL(implArray);
+
+	CImplementationInformation* info = implArray[0];
+	
+	// If stratergy is already loaded, and if its
+	// dll has changed then reload it
+	if(info->Version() != iVersion && iStratergy )
+	    {
+	    // this will unload stratergy
+	    delete iStratergy;
+	    iStratergy = NULL;
+	    // Load the dll again
+	    iStratergy = CLbtStrategyBase::NewL(this);
+	    iVersion = info->Version();
+        }
+    CleanupStack::PopAndDestroy(); // implArray
+	}
+
+// ---------------------------------------------------------------------------
+// CLbtStratergyContainer::RunError
+// ---------------------------------------------------------------------------
+//
+TInt CLbtStratergyContainer::RunError(TInt /*aError*/)
+	{
+	FUNC_ENTER("CLbtStratergyContainer::RunError");
+	return KErrNone;
+	}
+
+// ---------------------------------------------------------------------------
+// CLbtStratergyContainer::DoCancel
+// ---------------------------------------------------------------------------
+//
+void CLbtStratergyContainer::DoCancel()
+	{
+	FUNC_ENTER("CLbtStratergyContainer::DoCancel");
+	if(iEComSession)
+		{
+		// cancel request for ecom notification
+		// Note that although this takes a iStatus parameter, this is a
+		// synchronous call.
+		iEComSession->CancelNotifyOnChange(iStatus);
+		}
+	}
+
+// ---------------------------------------------------------------------------
+// CLbtStratergyContainer::UnloadStratergy
+// ---------------------------------------------------------------------------
+//
+void CLbtStratergyContainer::UnloadStratergy()
+    {
+    FUNC_ENTER("CLbtStratergyContainer::UnloadStratergy");
+    // Deleting the interface will unload 
+    // Stratergy
+    delete iStratergy;
+    iStratergy = NULL;
+    
+    iProperty.Set(KPSUidLbtStatusInformation, 
+                  KLbtLocationTriggeringSupervisionStatus, 
+                  ELbtLocationTriggeringSupervisionNotActive);
+                                     
+    // Cancel ECom upgrade notification
+    Cancel();
+    }
+
+// end of file