// Copyright (c) 2006-2009 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 __DSCDATABASE_H__

#define __DSCDATABASE_H__

#include <d32dbms.h>

#include <dscstoredefs.h>

extern const TInt KDscStoreMaxStringLength;

class CDscItem;

/** 

A database of DSC items

@internalComponent 

@released

*/

class CDscDatabase: public CBase

	{

public:

	static CDscDatabase* NewL();

	~CDscDatabase();

	void CreateDscL(const TUid& aDscId, const TDesC& aDescription);

	void DeleteDscL(const TUid& aDscId);

	TBool DscExistsL(const TUid& aDscId) const;

	void GetDscDescriptionL(const TUid &aDscId, TDes& aDescription) const;

	void AddItemL(CDscItem& aItem, TDscPosition aPos);

	void ReadItemL(CDscItem& aItem);

	void DeleteItemL(const CDscItem& aItem);

	void UpdateItemL(const CDscItem& aItem);

	TBool ItemExistsL(const CDscItem& aItem) const;

	void EnumOpenLC(const TUid& aDscId);

	CDscItem* EnumReadNextL();

	void EnumClose();

	static TInt MaxStringLength();

private:

	CDscDatabase();

	void ConstructL();	

	void CreateDatabaseL(const TDesC& aDatabaseName);

	void CreateTablesL();

	void QueryItemL(RDbView& aView,  const CDscItem& aItem) const;

	void ReadDscItemL(RDbRowSet& rowSet, CDscItem& aItem) const;

	TInt GetNextItemIdL(TDscPosition aPos, const TUid& aDscId) const;

	void Rollback();

	void DatabaseBeginLC();

	void DatabaseCommitL();

	static void CleanupDatabaseRollback(TAny *aDatabase);

	static void CleanupEnumRollback(TAny *aDatabase);

	void EnumBeginLC();

	TInt DeleteDb();

	static void GetDatabaseNameL(TDes& aDatabaseName);

private:

	RDbs iDbsSession;	

	mutable RDbNamedDatabase iDatabase;

	RDbView iView;

	TBool iIsEnumOpened;

	};

#endif // __DSCDATABASE_H__