--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tzservices/tzserver/Server/Include/ReadOnlyTzDb.h	Tue Feb 02 10:12:00 2010 +0200
@@ -0,0 +1,129 @@
+// Copyright (c) 2004-2009 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 __READONLYTZDB_H__
+#define __READONLYTZDB_H__
+
+#include <f32file.h>
+#include "MBackupRestoreNotificationObserver.h"
+#include "mtimezonedataaccess.h"
+#include "tzdbentities.h"
+#include "tzswiobserver.h"
+
+class CTzDbChangeNotifier;
+class CVTzRules;
+
+//
+// CReadOnlyTzDb: class to manage the Read-Only TimeZone Database
+//
+class CReadOnlyTzDb : public CBase, public MTzDataObserver
+	{
+public:
+	static CReadOnlyTzDb* NewL(RFs& aFs, CTzSwiObserver& aSwiObserver, MTzDataObserver& aTzDataObserver);
+	~CReadOnlyTzDb();
+	void ReleaseData();	// releases the data without destroying the object 
+						// (so that it can keep watching for changes to the database)
+
+	//
+	// Public methods to extract information from the database
+	// 
+	void GetTzRulesL(CTzRules& aRules, CTzId& aTzId);
+	CBufFlat* GetTzRuleDesignationL(CTzId& aTzId, const TDateTime& aDateTime, TTzTimeReference aTimeRef);
+	CTzId* GetDefaultTimeZoneIdL();
+	TInt GetOffsetForTimeZoneIdL(const TTime& aTime, TInt aTzId);
+	TBool IsIdInDbL(TUint aTzId);
+	
+public:
+	// methods to handle backup-restore
+	void BackupBeginningL();
+	void BackupCompletedL();
+	void RestoreBeginningL();
+	void RestoreCompletedL();
+	TInt StartAddress() const;
+
+	CTzDbZone* GetZoneL(TUint aReference) const;
+	CTzDbRuleSet* GetRuleSetL(TUint aReference) const;
+
+	const TTzZone& GetTZone(TUint aReference) const;
+	const TTzRegionalZoneIndex& GetTRegionalZoneIndex(TUint aReference) const;
+	const TTzStdTimeAlignment& GetTStdTimeAlignment(TUint aReference) const;
+	const TTzRuleUse& GetTRuleUse(TUint aReference) const;
+
+	TPtrC8 GetStringL(TUint aOffset) const;
+	const TTzRuleDefinition& GetTRuleDefinition(TUint aOffset) const;
+
+	// inherited from MTzDataObserver
+	void NotifyTZDataStatusChangeL(RTz::TTzChanges);
+	
+private:
+	CReadOnlyTzDb(RFs& aFs, CTzSwiObserver& aSwiObserver, MTzDataObserver& aTzDataObserver);
+	void ConstructL();
+	void InitialiseL();
+	
+	TInt CopyDatabaseToRam(const TDesC &aTzDbFileName);
+	TInt InvalidateFlashDatabaseL();
+	void DoGetTzRulesL(CTzRules& aRules, CTzId& aTzId);
+	
+	CTzDbZone* FindZoneL(CTzId& aTzId, TBool aFillInLocationIDs);
+	CTzDbZone* FindZoneByNameL(const TDesC8& aName);
+	CTzDbZone* FindZoneByNumericIdL(TUint aNumericId);
+	CTzDbStdTimeAlignment* FindStdTimeAlignmentL(const TDesC8& aZone, const TDateTime& aDateTime);
+
+	void HandleDatabaseChangeL(RTz::TTzChanges aChange);
+
+	inline void SetRestoreInProcess();
+	inline void ResetRestoreInProcess();
+
+private:
+	RFs& iFs;
+	CTzSwiObserver& iSwiObserver;
+
+	// detect and notify changes in the flash-based TZ Database
+	MTzDataObserver& iTzDataObserver;
+	
+	// DB entity tables (will be created when the object is constructed)
+	CTzDbStringsTable*				iStringsTable;
+	CTzDbRegionsTable*				iRegionsTable;
+	CTzDbRegionalZonesTable*		iRegionalZonesTable;
+	CTzDbZonesTable*				iZonesTable;
+	CTzDbLinksTable*				iLinksTable;
+	CTzDbStdTimeAlignmentsTable*	iStdTimeAlignmentsTable;
+	CTzDbRuleSetsTable*				iRuleSetsTable;
+	CTzDbRuleUsesTable*				iRuleUsesTable;
+	CTzDbRuleDefinitionsTable*		iRuleDefinitionsTable;
+
+	// Start address of RAM copy of TZ Database file
+	TInt	iStartAddress;
+	// RAM copy of TZ Database file
+	TUint8*	iTzDbData;
+	RChunk	iChunk;
+	// If true, RAM copy of TZ Database file was copied from Flash (C: drive)
+	// otherwise was copied from ROM (Z: drive).
+	TBool iTzDbDataFromFlash;
+
+	TBool	iRestoreInProcess;
+	};
+
+inline void CReadOnlyTzDb::SetRestoreInProcess()	
+	{ 
+	iRestoreInProcess = ETrue;	
+	}
+ 
+inline void CReadOnlyTzDb::ResetRestoreInProcess()	
+	{ 
+	iRestoreInProcess = EFalse;	
+	} 
+
+#endif // __READONLYTZDB_H__