diff -r e1b950c65cb4 -r 837f303aceeb epoc32/include/syncml/SmlDataSyncDefs.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/epoc32/include/syncml/SmlDataSyncDefs.h	Wed Mar 31 12:33:34 2010 +0100
@@ -0,0 +1,103 @@
+/*
+* Copyright (c) 2003 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: For adding content to be synchronized.
+*
+*/
+
+#ifndef __SMLDATASYNCDEFS_H__
+#define __SMLDATASYNCDEFS_H__
+//
+#include <e32std.h>
+//
+class RReadStream;
+class RWriteStream;
+//
+
+/**
+TSmlDbItemUid is the unique ID of an item in a data store
+
+@publishedPartner
+@released
+*/
+typedef TInt TSmlDbItemUid;
+
+/**
+KNullDataItemId is a null value of a Data Item ID, no item may have this ID.
+
+@publishedPartner
+@released
+*/
+const TSmlDbItemUid KNullDataItemId = KMinTInt;
+
+/**
+TSmlSyncTaskKey uniquely identifies a sync relationship between a local and remote data store.
+It should be used by Data Providers to resolve change information for a sync.
+
+@publishedPartner
+@released
+*/
+typedef TUint32 TSmlSyncTaskKey;
+
+
+class MSmlSyncRelationship
+	/**
+	SyncML store interface exposed to Database Adaptor implementations.
+	This interface may be used by a DBA to store change information for a Data Store, in the context
+	of a sync relationship with a remote Data Store.
+	It is vital for correct synchronisation behaviour that change information is stored separately for
+	different remote Data Stores. This interface facilitates this by providing streams that are stored
+	against specific Sync Tasks, and a unique key that identifies the sync relationship.
+
+	@publishedPartner
+	@released
+	*/
+	{
+	public:
+		/**
+		Returns the unique identifier for the synchronisation relationship.
+
+		@return				A unique identifier for the sync relationship.
+		*/
+		virtual TSmlSyncTaskKey SyncTaskKey() const = 0;
+		/**
+		Opens a specified stream for reading, and places an item on the cleanup stack to close it.
+
+		@param				 aReadStream	On return, an open read stream
+		@param				 aStreamUid		The UID of the stream to open for reading.
+		*/
+		virtual void OpenReadStreamLC(RReadStream& aReadStream, TUid aStreamUid) = 0;
+		/**
+		Opens the specified stream, or creates a new one if it does not exist, and places an item on the cleanup stack to close it.
+
+		@param				aWriteStream	On return, an open write stream
+		@param				aStreamUid		The UID of the stream to open or create
+		*/
+		virtual void OpenWriteStreamLC(RWriteStream& aWriteStream, TUid aStreamUid) = 0;
+		/**
+		Tests if the specified stream identified exists in the store.
+
+		@param				aStreamUid The stream UID
+		@return				Non-zero if the stream exists, otherwise EFalse.
+		*/
+		virtual TBool IsStreamPresentL(TUid aStreamUid) const = 0 ;
+	};
+
+
+
+
+
+///////////////////////////////////////////////////////////////////////////////
+///////////////////////////////////////////////////////////////////////////////
+///////////////////////////////////////////////////////////////////////////////
+#endif