diff -r 000000000000 -r 2e3d3ce01487 tzservices/tzloc/inc/TzLocalizationDbAccessor.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tzservices/tzloc/inc/TzLocalizationDbAccessor.h	Tue Feb 02 10:12:00 2010 +0200
@@ -0,0 +1,103 @@
+// 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 __TZLOCALIZATION_DB_ACCESSOR_H__
+#define __TZLOCALIZATION_DB_ACCESSOR_H__
+
+#include <e32base.h>
+#include <d32dbms.h>
+#include "TzLocalizationDataTypes.h"
+#include <tz.h>
+
+_LIT(KTzMutexName, 	"TZ_GlobalMutex");
+
+/**
+Provides access to the time zone localization database
+through a RDbs session.
+The database is stored in the DBMS private directory
+@internalTechnology
+*/
+class CTzLocalizationDbAccessor : public CBase
+	{
+	public:
+		//Enumerations used for column ordering in the database.
+		//The database columns MUST be created in the same order they appear in this enumeration
+		enum  TTzCityColumn
+			{
+			// Enum will used as a DB column index, so it must start at 1
+			ETzCityId =1,
+			ETzCityCity,
+			ETzCityGroup,
+			ETzCityResourceId,
+			};
+
+		enum TTzZoneColumn
+			{
+			// Enum will used as a DB column index, so it must start at 1
+			ETzZoneId =1,
+			ETzZoneStdName,
+			ETzZoneDSTName,
+			ETzZoneShortStdName,
+			ETzZoneShortDSTName,
+			ETzZoneCity,
+			ETzZoneGroupId,
+			ETzZoneResourceId,
+            ETzZoneCityIndex,
+			};
+
+		// enum that specifies the maximum length of the strings corresponding
+		// to time zone IDs and group IDs
+		enum TTzStringLength
+			{
+			// Group ID is an unsigned 8-bit integer
+			EMaxGroupIdStringLength = 3,
+			// Time Zone ID is an unsigned 16-bit integer
+			EMaxTimeZoneIdStringLength = 5
+			};
+
+	public:
+		//Construction / Destruction
+		static CTzLocalizationDbAccessor* NewL();
+		static CTzLocalizationDbAccessor* NewLC();
+		~CTzLocalizationDbAccessor();
+
+		void PrepareCityViewL(const TDesC& aSqlQuery);
+		void PrepareZoneViewL();
+
+        TBool DbNeedsUpdatingL();
+        void RecreateDbL(RTz& aTzSession);
+
+	protected:
+		CTzLocalizationDbAccessor();
+		//Second phase construction
+		void ConstructL();
+		static void ReleaseMutex(TAny *target) ;
+
+	private:
+		TInt CreateFrequentlyUsedZoneTableL();
+		TInt CreateUserCityTableL();
+        void CloseDb();
+        void OpenDbL();
+
+	protected:
+		//Member data
+		RDbs iDbsSession;						//DBMS server session
+		RDbNamedDatabase iLocalizedTimeZoneDb;	//Database
+		RDbView iCityView;						//Rowset
+		RDbView iZoneView;						//Rowset
+		RMutex	iZoneMutex ;                // protecting iZoneView changes
+	};
+
+#endif //__TZLOCALIZATION_DB_ACCESSOR_H__