// Copyright (c) 2002-2009 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:

 //

 #ifndef __LOGSERVDATABASETRANSACTIONINTERFACE_H__

 #define __LOGSERVDATABASETRANSACTIONINTERFACE_H__

 #include <d32dbms.h>

 #include "LogServShared.h"

 #include "logservsecurity.h"

 // Classes referenced

 class CLogServCacheTypes;

 class CLogServCacheConfig;

 class CLogServCacheStrings;

 class CLogServResourceInterpreter;

 class MLogServDatabaseChangeInterface;

 /**

 Interface class offering methods for:

  - beginning, committing and rolling back a transaction;

  - accessors to config, types and strings caches;

  - accessors to the resource interpreter and and the change interface;

 @see CLogServResourceInterpreter  

 @see MLogServDatabaseChangeInterface

 @see CLogServCacheStrings

 @see CLogServCacheTypes

 @see CLogServCacheConfig

 @internalComponent

 */

 class MLogServDatabaseTransactionInterface

 	{

 public:

 	virtual TInt DTIBegin() = 0;//Start a new transaction

 	virtual TInt DTICommitAndEnd() = 0;//End an existing transaction

 	virtual void DTIRollBack() = 0;//Roll back the current transaction

 	virtual TInt DTIExecuteSql(const TDesC& aStatement, TDbTextComparison aComparison = EDbCompareNormal) = 0;//Run some arbitrary SQL

 	virtual TBool DTIInTransaction() const = 0;//Is the database in an existing transaction

 	virtual TBool DTIDatabaseIsDamaged() const = 0;//Is the database in an existing transaction

 	virtual CLogServResourceInterpreter& DTIResourceInterface() const = 0;//Access the resource interface

 	virtual MLogServDatabaseChangeInterface& DTIChangeInterface() const = 0;//Acess the change submission interface

 	virtual CLogServCacheStrings& DTICacheStrings() const = 0;//Access the string table cache

 	virtual CLogServCacheTypes& DTICacheTypes() const = 0;//Access the type table cache

 	virtual CLogServCacheConfig& DTICacheConfig() const = 0;//Access the config table cache

 	virtual RDbDatabase& DTIDatabase() = 0;//Access the database

 	virtual TBool DTIIsAllowed(TEventOp aEventOp, const RMessage2& aMessage, TUid aEventType, const char* aDiagnostic = 0) const = 0;//Check client capability

 	virtual const RArray<TUid>& DTIUidsOfStandardTypes() = 0;//Returns a collection of built-in TUids of built-types - those defined in Logwrap.rss

 	void DTIBeginWithRollBackProtectionLC();//Start a transaction with roll-back protection (cleanup)

 	void DTICommitAndCancelRollbackProtectionL();//End a transaction previously started with roll-back protection

 private:

 	static void RollBackDatabase(TAny* aObject);

 	};

 #endif