diff -r 000000000000 -r e6b17d312c8b imsrv_plat/im_cache_client_api/inc/mimcacheaccessor.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/imsrv_plat/im_cache_client_api/inc/mimcacheaccessor.h	Thu Dec 17 08:54:49 2009 +0200
@@ -0,0 +1,95 @@
+/*
+* Copyright (c) 2008 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:  base class declaration for accessing the cache
+*
+*/
+
+
+
+#ifndef __MIMCACHEACCESSOR_H
+#define __MIMCACHEACCESSOR_H
+ 
+#include "imcachedefs.h"
+
+class MIMCacheEventHandler;
+ /**
+  * An interface for updating conversation information
+  *
+  * @since 5.0
+  */
+ class MIMCacheAccessor
+     {
+     public:
+     
+ 		/**
+    	* Register to observer conversation data updates
+    	* @param aObserver the observer interface
+    	*/
+        virtual void RegisterObserverL( MIMCacheEventHandler& aObserver ) = 0;
+
+    	/**
+    	* Unregister a conversation data update observer
+    	* @param aObserver the observer interface
+    	*/
+        virtual void UnRegisterObserver( MIMCacheEventHandler& aObserver ) = 0;
+		
+       	/**
+    	* to get the unread message count from server
+    	* @param aOwnUserId , logged in user id
+    	* @return number of unread msg count
+    	*/
+		virtual TInt GetUnreadMessageCountL( const TDesC& aBuddyId ) = 0;
+		
+	   /**
+    	* to get the all unread message count from server
+    	* @param , aOwnUserId logged in user id
+    	* @return number of all unread msg count
+    	*/
+        virtual TInt GetAllUnreadMessageCountL() = 0 ;
+        						
+		 /**
+         * check if already conversation opened
+         * @param aServiceId, serviceid to use
+         * @param aOwnUserId, own user id 
+         * @param aRecipientId, the selected user id with whom conversation is started
+         * @return ETrue if already exist else EFlase.
+         */
+        virtual TBool IsConversationExistL( const TDesC& aBuddyId ) = 0 ;	
+
+		/**
+		* closes conversation and commit operation
+		* @param aServiceId service id.
+		* @param aOwnId own user id.
+		* @param aRecipientId recipient's user id.
+		*/
+		virtual void CloseConversationL( const TDesC& aBuddyId ) = 0;
+		
+		  
+        /**
+        * get the chat list corresponding to service
+        * @param aServiceId service id
+        * @return Array of chats
+        */
+		virtual RArray<SIMCacheChatItem> GetChatListL( const TInt aServiceId  ) = 0 ; 
+		                           
+       
+		 
+	protected:
+     	/**
+     	* Destructor
+     	*/
+     	virtual ~MIMCacheAccessor() {};
+     };
+
+ #endif //__MIMCACHEUPDATER_H