diff -r 000000000000 -r ba25891c3a9e ncdengine/engine/inc/catalogscontext.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ncdengine/engine/inc/catalogscontext.h	Thu Dec 17 08:51:10 2009 +0200
@@ -0,0 +1,77 @@
+/*
+* Copyright (c) 2006 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:   Mixinclass for session's context-related tasks and info
+*
+*/
+
+
+#ifndef M_CATALOGS_CONTEXT_H
+#define M_CATALOGS_CONTEXT_H
+
+#include <e32cmn.h>
+
+/**
+ *  Class for session's context-related tasks and info
+ *
+ *  Server-side class for context-related tasks and info
+ *
+ *  @since S60 3.2
+ */
+class MCatalogsContext
+    {
+
+public:
+
+    /**
+     * Function that returns uid which identifies the family id
+     * of the client-session
+     *
+     * @since S60 3.2
+     * @return TUid that identifies the family id
+     */
+    virtual TUid FamilyId() const = 0;
+
+    /**
+     * Function that returns sid of the client-process
+     *
+     * @since S60 3.2
+     * @return TUid that identifies the family id
+     */
+    virtual TSecureId SecureId() const = 0;
+
+    /**
+     * Method for getting a provider-specific data for the
+     * context for reading and/or modification. By default the data
+     * is empty.
+     *
+     * @since S60 3.2
+     * @param aProviderIndex Local index number of the provider.
+     * @return Context data for the specified provider.
+     */
+    virtual RBuf8& ProviderDataL( TInt aProviderIndex ) = 0;
+    
+    /**
+     * Function that returns the instance id of the client-session.
+     * There may be multiple clients with the same family id and SID
+     * (i.e. multiple instances of the same client) and in some cases
+     * it's necessary to differentiate them. This id serves that purpose.
+     * 
+     * @return Instance id that differentiates clients using the same family uid
+     */
+    virtual TInt InstanceId() const = 0;
+    
+    };
+
+
+#endif // M_CATALOGS_CONTEXT_H