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syncmlfw/ds/hostserver/dshostclient/inc/nsmldshostclient.h
changeset 0 b497e44ab2fc 
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/syncmlfw/ds/hostserver/dshostclient/inc/nsmldshostclient.h	Thu Dec 17 09:07:52 2009 +0200
@@ -0,0 +1,512 @@
+/*
+* Copyright (c) 2005 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:  Client module of DS Host Servers
+*
+*/
+
+
+#ifndef __NSMLDSHOSTCLIENT_H__ 
+#define __NSMLDSHOSTCLIENT_H__ 
+
+// ------------------------------------------------------------------------------------------------
+// Includes
+// ------------------------------------------------------------------------------------------------
+#include <e32base.h>
+#include <e32std.h>
+#include <badesca.h>
+#include <SyncMLDef.h>
+#include <SmlDataProvider.h>
+#include <SyncMLDataFilter.h>
+
+#include "nsmldshostclientsession.h"
+#include "nsmldsdpinformation.h"
+#include "nsmldsitemmodificationset.h"
+
+// ------------------------------------------------------------------------------------------------
+// Class forwards
+// ------------------------------------------------------------------------------------------------
+class RSmlFilter;
+class RSmlFilterDef;
+class CNSmlDbCaps;
+class RNSmlDbItemModificationSet;
+
+// ------------------------------------------------------------------------------------------------
+// client API for DS Host Servers.
+//
+//  @lib nsmldshostclient.lib
+// ------------------------------------------------------------------------------------------------
+class CNSmlDSHostClient : public CBase
+	{
+public:
+	/**
+	* Creates new instance of CNSmlDSHostClient based class.
+	* @return CNSmlDSHostClient*. Newly created instance.
+	*/
+	IMPORT_C static CNSmlDSHostClient* NewL();
+	
+	/**
+	* Creates new instance of CNSmlDSHostClient based class.
+	* @return CNSmlDSHostClient*. Newly created instance that is pushed to cleanup stack.
+	*/
+	IMPORT_C static CNSmlDSHostClient* NewLC();
+	
+	/**
+	* C++ Destructor.
+	*/
+	IMPORT_C ~CNSmlDSHostClient();
+	
+	/**
+	* Creates Data Providers.
+	* @param aIds. The array of IDs of Data Providers.
+	* @param aResultArray. The result for each Data Provider. KErrNone or one of the system wide error codes.
+	* 		 Order of results must be same as IDs of Data Providers.
+	*/
+	IMPORT_C void CreateDataProvidersL( const RArray<TSmlDataProviderId>& aIds, RArray<TInt>& aResultArray );
+	
+	/**
+	* Creates all possible Data Providers.
+	* @param aIds. At return the array of IDs of Data Providers.
+	*/
+	IMPORT_C void CreateAllDataProvidersL( RArray<TSmlDataProviderId>& aIds );
+	
+	/**
+	* fetches information on data provider
+	* The caller has the responsibility to free all the memory reserved for returned struct.
+	* @param aId. The ID of Data Provider.
+	* @param aResultCode. The result of method. KErrNone if everything goes correctly.
+	* @return TNSmlDPInformation*. Struct filled with fetched information. 
+	*/
+	IMPORT_C TNSmlDPInformation* DataProviderInformationL( const TSmlDataProviderId aId, TInt& aResultCode ) const;
+
+	/**
+	* Asks if Data Provider supports some operation.
+	* @param aOpId. The ID of Operation.
+	* @param aId. The ID of Data Provider.
+	* @param aResultCode. The result of method. KErrNone if everything goes correctly.
+	* @return TBool, ETrue if operation is supported and EFalse if not.
+	*/
+	IMPORT_C TBool SupportsOperationL( TUid aOpId, const TSmlDataProviderId aId, TInt& aResultCode ) const;
+	
+	/**
+	* Creates Data Store format of Data Provider.
+	* @param aId. The ID of Data Provider.
+	* @param aResultCode. The result of method. KErrNone if everything goes correctly.
+	* @return CNSmlDbCaps. Store format of Data Provider.
+	*/
+	IMPORT_C CNSmlDbCaps* StoreFormatL( const TSmlDataProviderId aId, TInt& aResultCode );
+	
+	/**
+	* Creates list of Data Store names of Data Provider.
+	* @param aNameList. Return the names of datastores that the Data Provider can open.
+	* @param aId. The ID of Data Provider.
+	* @param aResultCode. The result of method. KErrNone if everything goes correctly.
+	*/
+	IMPORT_C void ListStoresL( CDesCArray* aNameList, const TSmlDataProviderId aId, TInt& aResultCode );
+	
+	/**
+	* Creates default name for Data Store of Data Provider.
+	* @param aId. The ID of Data Provider.
+	* @param aResultCode. The result of method. KErrNone if everything goes correctly.
+	* @return HBufC*. Contains default Data Store name.
+	*/
+	IMPORT_C HBufC* DefaultStoreL( const TSmlDataProviderId aId, TInt& aResultCode );
+	
+	/**
+	* This method returns the set of filters that can be used to send to the Sync Partner.
+	* @param aId. The ID of Data Provider.
+	* @param aResultCode. The result of method. KErrNone if everything goes correctly.
+	* @return RPointerArray<CSyncMLFilter>*. Array, that includes filter.
+	*/
+	IMPORT_C RPointerArray<CSyncMLFilter>* SupportedServerFiltersL( const TSmlDataProviderId aId, TSyncMLFilterMatchType& aMatchType, TSyncMLFilterChangeInfo& aChangeInfo, TInt& aResultCode ) const;
+	
+	/**
+	* This method updates dynamic filters up-to-date.
+	* @param aFilters. The array that includes filters
+	* @param aChangeInfo. The change information about changes that data provider did
+	* @param aId. The ID of Data Provider.
+	* @param aResultCode. The result of method. KErrNone if everything goes correctly.
+	*/
+	IMPORT_C void CheckServerFiltersL( const TSmlDataProviderId aId, RPointerArray<CSyncMLFilter>& aFilters, TSyncMLFilterChangeInfo& aChangeInfo, TInt& aResultCode ) const;
+	
+	/**
+	* This method checks what filters are supported by server.
+	* @param aServerDataStoreFormat. The store format of Sync Partner.
+	* @param aFilterInfoArr. Array of filter information
+	* @param aFilters. The array that includes filters
+	* @param aChangeInfo. The change information about changes that data provider did
+	* @param aId. The ID of Data Provider.
+	* @param aResultCode. The result of method. KErrNone if everything goes correctly.
+	*/
+	IMPORT_C void CheckSupportedServerFiltersL( const TSmlDataProviderId aId, const CNSmlDbCaps& aServerDataStoreFormat, const CArrayFix<TNSmlFilterCapData>& aFilterInfoArr, RPointerArray<CSyncMLFilter>& aFilters, TSyncMLFilterChangeInfo& aChangeInfo, TInt& aResultCode ) const;
+
+	/**
+	* Get Filters.
+	* @param aId. The ID of Data Provider.
+	* @param aFilterArray. The filters to be used for the query generation
+	* @param aFilter. Results
+	* @param aMatchType. The filter match type to be used
+	* @param aResultCode. The result of method. KErrNone if everything goes correctly.
+	*/	
+	IMPORT_C void GetFilterL( const TSmlDataProviderId aId, const TDesC& aStoreName, const RPointerArray<CSyncMLFilter>& aFilterArray, CNSmlFilter*& aFilter, TSyncMLFilterMatchType aMatchType, TInt& aResultCode );
+	
+	/**
+	* Opens the data store specified by aStoreName asynchronously.
+	* @param aContext. Identifies the specific synchronisation relationship to use.
+	* @param aId. The ID of Data Provider.
+	* @param aStoreName. The name of the data store that is used.
+	* @param aResultCode. The result of method. KErrNone if everything goes correctly.
+	*/
+	IMPORT_C void OpenL( const TSmlDataProviderId aId, const TDesC& aStoreName, const TDesC& aServerId, const TDesC& aRemoteDB, TInt& aResultCode );
+			
+	/**
+	* Cancel the current asynchronous request.
+	* @param aId. The ID of Data Provider.
+	* @param aStoreName. The name of the data store that is used.
+	* @param aResultCode. The result of method. KErrNone if everything goes correctly.
+	*/
+	IMPORT_C void CancelRequestL( const TSmlDataProviderId aId, const TDesC& aStoreName, TInt& aResultCode );
+	
+	/**
+	* Starts the transaction mode.
+	* @param aId. The ID of Data Provider.
+	* @param aStoreName. The name of the data store that is used.
+	* @param aResultCode. The result of method. KErrNone if everything goes correctly.
+	*/
+	IMPORT_C void BeginTransactionL( const TSmlDataProviderId aId, const TDesC& aStoreName, TInt& aResultCode );
+	
+	/**
+	* Method will be called at the end of a successful transaction.
+	* @param aId. The ID of Data Provider.
+	* @param aStoreName. The name of the data store that is used.
+	* @param aResultCode. The result of method. KErrNone if everything goes correctly.
+	*/
+	IMPORT_C void CommitTransactionL( const TSmlDataProviderId aId, const TDesC& aStoreName, TInt& aResultCode );
+	
+	/**
+	* Method will be called to abort an ongoing transaction.
+	* @param aId. The ID of Data Provider.
+	* @param aStoreName. The name of the data store that is used.
+	* @param aResultCode. The result of method. KErrNone if everything goes correctly.
+	*/
+	IMPORT_C void RevertTransactionL( const TSmlDataProviderId aId, const TDesC& aStoreName, TInt& aResultCode );
+	
+	/**
+	* Starts the batch mode.
+	* @param aId. The ID of Data Provider.
+	* @param aStoreName. The name of the data store that is used.
+	* @param aResultCode. The result of method. KErrNone if everything goes correctly.
+	*/
+	IMPORT_C void BeginBatchL( const TSmlDataProviderId aId, const TDesC& aStoreName, TInt& aResultCode );
+	
+	/**
+	* Method will be called at the end of the batch mode.
+	* @param aResultArray is used to store result for each operation
+	*		 (in the order they were submitted) during batch.
+	* @param aId. The ID of Data Provider.
+	* @param aStoreName. The name of the data store that is used.
+	* @param aResultCode. The result of method. KErrNone if everything goes correctly.
+	*/
+	IMPORT_C void CommitBatchL( RArray<TInt>& aResultArray, const TSmlDataProviderId aId, const TDesC& aStoreName, TInt& aResultCode );
+	
+	/**
+	* Method will be called to abort an ongoing batch mode.
+	* @param aId. The ID of Data Provider.
+	* @param aStoreName. The name of the data store that is used.
+	* @param aResultCode. The result of method. KErrNone if everything goes correctly.
+	*/
+	IMPORT_C void CancelBatchL( const TSmlDataProviderId aId, const TDesC& aStoreName, TInt& aResultCode );
+	
+	/**
+	* Sets the Sync Partner Data Format
+	* @param aServerDataStoreFormat. The data store format of Sync Partner.
+	* @param aId. The ID of Data Provider.
+	* @param aStoreName. The name of the data store that is used.
+	* @param aResultCode. The result of method. KErrNone if everything goes correctly.
+	*/
+	IMPORT_C void SetRemoteDataStoreFormatL( const CNSmlDbCaps& aServerDataStoreFormat, const TSmlDataProviderId aId, const TDesC& aStoreName, TInt& aResultCode );
+	
+	/**
+	* Sets the SyncML server Sync Partner maximum object size
+	* @param aServerMaxObjectSize. The maximum object size of Sync Partner.
+	* @param aId. The ID of Data Provider.
+	* @param aStoreName. The name of the data store that is used.
+	* @param aResultCode. The result of method. KErrNone if everything goes correctly.
+	*/
+	IMPORT_C void SetRemoteMaxObjectSizeL( TInt aServerMaxObjectSize, const TSmlDataProviderId aId, const TDesC& aStoreName, TInt& aResultCode );
+	
+	/**
+	* Gets the Data Store maximum object size which is reported to the SyncML partner.
+	* @param aId. The ID of Data Provider.
+	* @param aStoreName. The name of the data store that is used.
+	* @return TInt. The maximum object size of Data Store.
+	* @param aResultCode. The result of method. KErrNone if everything goes correctly.
+	*/
+	IMPORT_C TInt MaxObjectSizeL( const TSmlDataProviderId aId, const TDesC& aStoreName, TInt& aResultCode ) const;
+	
+	/**
+	* Opens item at Data Store.
+	* @param aUid. The UID of item.
+	* @param aFieldChange. Data Provider change to ETrue if there is only some field changes at item.
+	* @param aSize. The Data Provider puts the size of item to this parameter.
+	* @param aParent. Data Provider puts the UID of parent of item to this parameter.
+	* @param aMimeType. Data Provider puts the mime type of item to this parameter.
+	* @param aMimeVer. Data Provider puts the mime version of item to this parameter.
+	* @param aId. The ID of Data Provider.
+	* @param aStoreName. The name of the data store that is used.
+	* @param aResultCode. The result of method. KErrNone if everything goes correctly.
+	*/
+	IMPORT_C void OpenItemL( TSmlDbItemUid aUid, TBool& aFieldChange, TInt& aSize, TSmlDbItemUid& aParent, HBufC8*& aMimeType, HBufC8*& aMimeVer, const TSmlDataProviderId aId, const TDesC& aStoreName, TInt& aResultCode );
+	
+	/**
+	* Creates new item to Data Store.
+	* @param aUid. The Data Provider puts the UID of new item to this parameter. It can be also put just after commit method.
+	* @param aSize. The size of new item.
+	* @param aParent. The UID of parent of new item.
+	* @param aMimeType. The mime type of new item.
+	* @param aMimeVer. The mime version of new item.
+	* @param aId. The ID of Data Provider.
+	* @param aStoreName. The name of the data store that is used.
+	* @param aResultCode. The result of method. KErrNone if everything goes correctly.
+	*/
+	IMPORT_C void CreateItemL( TSmlDbItemUid& aUid, TInt aSize, TSmlDbItemUid aParent, const TDesC8& aMimeType, const TDesC8& aMimeVer, const TSmlDataProviderId aId, const TDesC& aStoreName, TInt& aResultCode );
+	
+	/**
+	* Replaces old item at Data Store.
+	* @param aUid. The UID of item. If item is added to the Data Store then The Data Provider
+	*		 puts the UID of new item to this parameter. It can be also put just after commit method.
+	* @param aSize. The size of item.
+	* @param aParent. The UID of parent of item.
+	* @param aFieldChange. If this is true then replace is only partial,
+	* @param aId. The ID of Data Provider.
+	* @param aStoreName. The name of the data store that is used.
+	* @param aResultCode. The result of method. KErrNone if everything goes correctly.
+	*/
+	IMPORT_C void ReplaceItemL( TSmlDbItemUid aUid, TInt aSize, TSmlDbItemUid aParent, TBool aFieldChange, TSmlDataProviderId aId, const TDesC& aStoreName, TInt& aResultCode );
+	
+	/**
+	* Reads data from item at Data Store. Item must be opened before this method can be called.
+	* This method is called until aBuffer is not used totally or method leaves with KErrEof.
+	* @param aBuffer. The Data Provider puts readed data to this parameter,
+	* @param aId. The ID of Data Provider.
+	* @param aStoreName. The name of the data store that is used.
+	* @param aResultCode. The result of method. KErrNone if everything goes correctly.
+	*/
+	IMPORT_C void ReadItemL( TDes8& aBuffer, const TSmlDataProviderId aId, const TDesC& aStoreName, TInt& aResultCode );
+	
+	/**
+	* Writes data to item to Data Provider. CreateItemL or ReplaceItemL method must be called before
+	* this method can be called. This method is called until all data to current item is written.
+	* @param aData. The data that is written to item at Data Store,
+	* @param aId. The ID of Data Provider.
+	* @param aStoreName. The name of the data store that is used.
+	* @param aResultCode. The result of method. KErrNone if everything goes correctly.
+	*/
+	IMPORT_C void WriteItemL( const TDesC8& aData, const TSmlDataProviderId aId, const TDesC& aStoreName, TInt& aResultCode );
+	
+	/**
+	* After item is written to Data Provider it can be saved to the Data Store.
+	* This method can be called just after WriteItemL method.
+	* @param aId. The ID of Data Provider.
+	* @param aStoreName. The name of the data store that is used.
+	* @param aResultCode. The result of method. KErrNone if everything goes correctly.
+	*/
+	IMPORT_C void CommitItemL( const TSmlDataProviderId aId, const TDesC& aStoreName, TInt& aResultCode );
+	
+	/**
+	* Closes opened item.
+	* This method can be called just if some item is open.
+	* @param aId. The ID of Data Provider.
+	* @param aStoreName. The name of the data store that is used.
+	* @param aResultCode. The result of method. KErrNone if everything goes correctly.
+	*/
+	IMPORT_C void CloseItemL( const TSmlDataProviderId aId, const TDesC& aStoreName, TInt& aResultCode );
+	
+	/**
+	* Moves item to new location.
+	* @param aUid. The UID of item.
+	* @param aNewParent. The UID of new parent of item.
+	* @param aId. The ID of Data Provider.
+	* @param aStoreName. The name of the data store that is used.
+	* @param aResultCode. The result of method. KErrNone if everything goes correctly.
+	*/
+	IMPORT_C void MoveItemL( TSmlDbItemUid aUid, TSmlDbItemUid aNewParent, const TSmlDataProviderId aId, const TDesC& aStoreName, TInt& aResultCode );
+	
+	/**
+	* Deletes one item at Data Store permanently.
+	* @param aUid. The UID of item.
+	* @param aId. The ID of Data Provider.
+	* @param aStoreName. The name of the data store that is used.
+	* @param aResultCode. The result of method. KErrNone if everything goes correctly.
+	*/
+	IMPORT_C void DeleteItemL( TSmlDbItemUid aUid, const TSmlDataProviderId aId, const TDesC& aStoreName, TInt& aResultCode );
+	
+	/**
+	* Soft deletes one item at Data Store.
+	* @param aUid. The UID of item.
+	* @param aId. The ID of Data Provider.
+	* @param aStoreName. The name of the data store that is used.
+	* @param aResultCode. The result of method. KErrNone if everything goes correctly.
+	*/
+	IMPORT_C void SoftDeleteItemL( TSmlDbItemUid aUid, const TSmlDataProviderId aId, const TDesC& aStoreName, TInt& aResultCode );
+	
+	/**
+	* Deletes all items at Data Store permanently.
+	* @param aId. The ID of Data Provider.
+	* @param aStoreName. The name of the data store that is used.
+	* @param aResultCode. The result of method. KErrNone if everything goes correctly.
+	*/
+	IMPORT_C void DeleteAllItemsL( const TSmlDataProviderId aId, const TDesC& aStoreName, TInt& aResultCode );
+	
+	/**
+	* Checks if the Data Store has sync history. If not then slow sync is proposed to Sync Partner.
+	* @param aId. The ID of Data Provider.
+	* @param aStoreName. The name of the data store that is used.
+	* @param aResultCode. The result of method. KErrNone if everything goes correctly.
+	* @return TBool. ETrue, if the data store has sync history, EFalse otherwise.
+	*/
+	IMPORT_C TBool HasSyncHistoryL( const TSmlDataProviderId aId, const TDesC& aStoreName, TInt& aResultCode ) const;
+	
+	/**
+	* The Data Provider returns UIDs of items that are added after previous synchronization.
+	* If the Data Provider uses hierarchical synchronization then added folders must be placed
+	* first (from root to leaves) to UID set and finally items.
+	* @param aUidSet. The set of added items.
+	* @param aId. The ID of Data Provider.
+	* @param aStoreName. The name of the data store that is used.
+	* @param aResultCode. The result of method. KErrNone if everything goes correctly.
+	*/
+	IMPORT_C void AddedItemsL( RNSmlDbItemModificationSet& aUidSet, const TSmlDataProviderId aId, const TDesC& aStoreName, TInt& aResultCode ) const;
+	
+	/**
+	* The Data Provider returns UIDs of items that are deleted after previous synchronization.
+	* If the Data Provider uses hierarchical synchronization then deleted items must be placed
+	* first to UID set and folders after items (from leaves to root).
+	* @param aUidSet. The set of deleted items.
+	* @param aId. The ID of Data Provider.
+	* @param aStoreName. The name of the data store that is used.
+	* @param aResultCode. The result of method. KErrNone if everything goes correctly.
+	*/
+	IMPORT_C void DeletedItemsL( RNSmlDbItemModificationSet& aUidSet, const TSmlDataProviderId aId, const TDesC& aStoreName, TInt& aResultCode ) const;
+	
+	/**
+	* The Data Provider returns UIDs of items that are soft deleted after previous synchronization.
+	* If the Data Provider uses hierarchical synchronization then soft deleted items must be placed
+	* first to UID set and folders after items (from leaves to root).
+	* @param aUidSet. The set of soft deleted items.
+	* @param aId. The ID of Data Provider.
+	* @param aStoreName. The name of the data store that is used.
+	* @param aResultCode. The result of method. KErrNone if everything goes correctly.
+	*/
+	IMPORT_C void SoftDeleteItemsL( RNSmlDbItemModificationSet& aUidSet, const TSmlDataProviderId aId, const TDesC& aStoreName, TInt& aResultCode ) const;
+	
+	/**
+	* The Data Provider returns UIDs of items that are modified after previous synchronization.
+	* If the Data Provider uses hierarchical synchronization then modified folders must be placed
+	* first (from root to leaves) to UID set and finally items.
+	* @param aUidSet. The set of modified items.
+	* @param aId. The ID of Data Provider.
+	* @param aStoreName. The name of the data store that is used.
+	* @param aResultCode. The result of method. KErrNone if everything goes correctly.
+	*/
+	IMPORT_C void ModifiedItemsL( RNSmlDbItemModificationSet& aUidSet, const TSmlDataProviderId aId, const TDesC& aStoreName, TInt& aResultCode ) const;
+	
+	/**
+	* The Data Provider returns UIDs of items that are moved after previous synchronization.
+	* If the Data Provider uses hierarchical synchronization then moved folders must be placed
+	* first (from root to leaves) to UID set and finally items.
+	* @param aUidSet. The set of moved items.
+	* @param aId. The ID of Data Provider.
+	* @param aStoreName. The name of the data store that is used.
+	* @param aResultCode. The result of method. KErrNone if everything goes correctly.
+	*/
+	IMPORT_C void MovedItemsL( RNSmlDbItemModificationSet& aUidSet, const TSmlDataProviderId aId, const TDesC& aStoreName, TInt& aResultCode ) const;
+	
+	/**
+	* The Data Provider returns UIDs of items that are added, deleted, modified, softdeleted or moved after previous synchronization.
+	* @param aUidSet. The set of items.
+	* @param aId. The ID of Data Provider.
+	* @param aStoreName. The name of the data store that is used.
+	* @param aResultCode. The result of method. KErrNone if everything goes correctly.
+	*/
+	IMPORT_C void AllItemsL( RNSmlDbItemModificationSet& aUidSet, const TSmlDataProviderId aId, const TDesC& aStoreName, TInt& aResultCode ) const;
+	
+	/**
+	* Reset change info from the Data Provider. The following synchronization will be slow sync.
+	* @param aId. The ID of Data Provider.
+	* @param aStoreName. The name of the data store that is used.
+	* @param aResultCode. The result of method. KErrNone if everything goes correctly.
+	*/
+	IMPORT_C void ResetChangeInfoL( const TSmlDataProviderId aId, const TDesC& aStoreName, TInt& aResultCode );
+	
+	/**
+	* This method is called after some changes are synchronized to Sync Partner. If some changes
+	* were synchronized correctly then those UIDs are included to aItems.
+	* @param aItems. The UIDs of items that were correctly synchronized to Sync Partner.
+	* @param aId. The ID of Data Provider.
+	* @param aStoreName. The name of the data store that is used.
+	* @param aResultCode. The result of method. KErrNone if everything goes correctly.
+	*/
+	IMPORT_C void CommitChangeInfoL( const MSmlDataItemUidSet& aItems, const TSmlDataProviderId aId, const TDesC& aStoreName, TInt& aResultCode );
+	
+	/**
+	* This method is called after some changes are synchronized to Sync Partner. This method is used if
+	* all changes were synchronized correctly.
+	* @param aId. The ID of Data Provider.
+	* @param aStoreName. The name of the data store that is used.
+	* @param aResultCode. The result of method. KErrNone if everything goes correctly.
+	*/
+	IMPORT_C void CommitChangeInfoL( const TSmlDataProviderId aId, const TDesC& aStoreName, TInt& aResultCode );
+	
+	/**
+	* Replaces the give old server ID with new one.
+    * @param aOldServerId Old remote server ID.
+	* @param aNewValue New remote server ID.
+	*/
+	IMPORT_C void UpdateServerIdL( TDesC& aOldServerId, TDesC& aNewValue, TInt& aResultCode  );
+	
+private:
+	/**
+	* C++ constructor.
+	*/	
+	CNSmlDSHostClient();
+	
+	/**
+	* ConstrucL
+	*/	
+	void ConstructL();
+	
+	/**
+	* Return session to correct server that has current Data Provider.
+	* @param aId. The ID of the Data Provider.
+	* @return RNSmlDSHostClient, Session to correct server.
+	*/
+	TInt SessionForDataProvider( const TSmlDataProviderId aId ) const;
+	
+	/**
+	* converts host error code to general error.
+	* @param aStatusFromHost. Status code from host.
+	* @return general error.
+	*/
+	static TInt HostErrorConversion( TInt aStatusFromHost );
+
+private:
+	RArray<TSmlDataProviderId> iDataProviders1;	// Data Providers that are at Host Server 1
+	RArray<TSmlDataProviderId> iDataProviders2;	// Data Providers that are at Host Server 2
+	RNSmlDSHostClient iClient1;					// Session to Host Server 1
+	RNSmlDSHostClient iClient2;					// Session to Host Server 2
+	};
+	
+#endif // __NSMLDSHOSTCLIENT_H__
+
+// End of File
MCL/sf/mw/remotemgmt