--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/messagingfw/msgsrvnstore/server/src/msvsearchsortdeltacache.cpp	Mon Jan 18 20:36:02 2010 +0200
@@ -0,0 +1,135 @@
+// Copyright (c) 2008-2009 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:
+//
+
+#include "msvsearchsortdeltacache.h"
+#include "MSVPANIC.H"
+
+
+CMsvSearchSortDeltaCache* CMsvSearchSortDeltaCache::iMsvSearchSortDeltaCache =NULL;
+
+/**
+* CMsvSearchSortDeltaCache()
+* 
+*/
+
+CMsvSearchSortDeltaCache::CMsvSearchSortDeltaCache()
+	{
+	iNewEntry.Reset();
+	iUpdateEntry.Reset();
+	iDeleteEntry.Reset();
+	}
+
+/**
+* ~CMsvSearchSortDeltaCache()
+*
+*/
+
+CMsvSearchSortDeltaCache::~CMsvSearchSortDeltaCache() 
+	{
+	iDeleteEntry.Close();
+	iNewEntry.Close();
+	iUpdateEntry.Close();
+	iMsvSearchSortDeltaCache = NULL;
+	}
+
+
+ /**
+ * Instance()
+ *
+ * The function returns already created instance of
+ * this class to the caller. To create a new instance
+ * the caller should call CreateL(). If an instance of
+ * this object does not already exists, the function 
+ * throws a panic EMsvFreePoolNotCreated in DEBUG mode.
+ */ 
+CMsvSearchSortDeltaCache* CMsvSearchSortDeltaCache::Instance()
+	{
+	__ASSERT_DEBUG(iMsvSearchSortDeltaCache!=NULL , PanicServer(EMsvSearchSortDeltaCacheNotCreated));
+	return iMsvSearchSortDeltaCache;
+	}
+
+
+/**
+ * CreateDeltaCacheL()
+ *
+ * The only way to create an object of this class.
+ * The function ensures that only one instance of
+ * the object is created. This is a static interface.
+ * The function is made private to ensure that only
+ * friend function can create instance of this class.
+ */ 
+CMsvSearchSortDeltaCache* CMsvSearchSortDeltaCache::CreateDeltaCacheL()
+	{
+	CMsvSearchSortDeltaCache* self = new (ELeave) CMsvSearchSortDeltaCache();
+	//Push object in to cleanup stack so that it 
+	// will be handles properly incase of a leave.
+	CleanupStack::PushL(self);
+	self->ConstructL();
+	//Pop from cleanupstack
+	CleanupStack::Pop(self);
+	iMsvSearchSortDeltaCache = self;
+	return self;
+	}
+
+
+/**
+ * ConstructL()
+ *
+ * The function is called from InstanceL() and used to
+ * initialize the instance of this class. It firsts reads
+ * cache configuration information from msgcache.ini file
+ * and stores them into member variable. It then allocates
+ * creates initial set of entries as described in conf file. 
+ */
+void CMsvSearchSortDeltaCache::ConstructL()
+	{
+	}
+
+/**
+* EntryInDeltaCache()
+* Add three different type (New, Update, Delete) of entry  in Delta Cache.
+* @param :aID :a TMsvId ;aType = a TMsgType
+* @return :TInt
+*/
+	
+void CMsvSearchSortDeltaCache::EntryInDeltaCache(TMsvId aID,TMsgType aType)
+	{
+	if(aType == ENewMsg ) //New Msg Entry
+		{
+		iMsvSearchSortDeltaCache->iNewEntry.Append(aID);
+		iMsvSearchSortDeltaCache->iDeltaCacheDirtyFlag = ETrue;
+		}
+	// This conditional statement is required to check if any msg updation is going  on while doing search or not.
+	// And if any TMsvId  is  alreday added it should not add it again.
+	else if(aType == EUpdatedMsg && !iIsHeaderSearchEnabled) //Updated msg Entry
+			{
+			//check if we already have aID in iNewEntry array list.
+			TInt foundPos = iMsvSearchSortDeltaCache->iNewEntry.Find(aID);
+						
+			if( foundPos < 0 &&
+				iUpdateEntry.Find(aID) == KErrNotFound )
+				{
+				iMsvSearchSortDeltaCache->iUpdateEntry.Append(aID);
+				iMsvSearchSortDeltaCache->iDeltaCacheDirtyFlag = ETrue;
+				}
+							
+			}
+	else if(aType == EDeletedMsg) //Deleted msg Entry.
+		{
+		iMsvSearchSortDeltaCache->iDeleteEntry.Append(aID);
+		iMsvSearchSortDeltaCache->iDeltaCacheDirtyFlag = ETrue;
+		}
+	}
+