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/*
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* Copyright (c) 2002-2004 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description: This class manages Calendar Server's connection to Agenda Server
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* and Calendar database.
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*
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*/
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#ifndef CALENSVRDBMANAGER_H
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#define CALENSVRDBMANAGER_H
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// INCLUDES
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#include "PropertyObserver.h"
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#include <calprogresscallback.h> // MCalProgressCallBack
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#include <e32base.h>
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// FORWARD DECLARATIONS
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class CCalenGlobalData;
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/**
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* CCalenSvrDBManager manages Calendar Server's connection to Agenda Server
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* and Calendar database. It optimizes behavior so that Agenda Server
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* is not opened and closed unnecessarily often in short period of time, as
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* opening can be costly operation as it requires
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* 1) Starting Agenda Server process
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* 2) Opening database and creating indexes. Indexes are stored in
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* Agenda Server, and reused by all clients of same database.
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*
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* It uses Calendar Engine to do actual opening. It owns Calendar Engine.
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*/
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NONSHARABLE_CLASS( CCalenSvrDBManager ) :
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public CBase,
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public MPropertyChangeHandler,
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public MCalProgressCallBack
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{
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public:
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NONSHARABLE_CLASS( MCalenDBUser )
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{
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public:
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virtual void DatabaseOpened() = 0;
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virtual void DatabaseTemporarilyClosed() = 0;
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virtual void HandleError() = 0;
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};
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public: // Construction and destruction
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static CCalenSvrDBManager* NewL();
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virtual ~CCalenSvrDBManager();
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public: // New methods
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/** Called by Calendar server, when booting is ready
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*/
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void BootReadyL();
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/** Register new user for Calendar database. Database is kept
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* open as long as there are users.
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*/
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void RegisterUserL(MCalenDBUser& aUser);
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/** Unregister user from Calendar database. When there are no more
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* users, CCalenSvrDBManager sets small delay and closes database
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* session.
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*/
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void UnregisterUserL(MCalenDBUser& aUser);
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public: // From PropertyObserver
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void HandlePropertyChange(const TUid& aCategory, const TUint& aKey, const TInt& aValue);
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public: // from MCalProgressCallBack
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void Completed(TInt aError);
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TBool NotifyProgress();
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void Progress(TInt aPercentageCompleted);
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private:
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void OpenDatabaseCompletedL(TInt aErrorVal = KErrNone);
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private: // Timer handling
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void StartClosingTimer();
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void ClosingTimeOut();
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static TInt ClosingTimeOutCallback(TAny* aAny);
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private: // Restore handling
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void RestoreStarted();
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void RestoreFinishedL();
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private: // construction
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CCalenSvrDBManager();
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void ConstructL();
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private: // new functions
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/**
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*
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**/
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void NotifyUsersL(TInt aErrorVal = KErrNone);
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private:
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enum TState
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{
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EStateBooting, // FIXME: if unregister works correctly this is not needed
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EStateOpeningDB,
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EStateDBOpen,
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EStateGoingToCloseDB,
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EStateDBClosed,
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EStateRestoring
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};
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TState iState;
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RPointerArray<MCalenDBUser> iUsers;
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CPeriodic* iClosingTimer;
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CCalenGlobalData* iGlobalData;
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// ?one_line_short_description_of_data
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CPropertyObserver* iBackupObserver;
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};
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#endif // CALENSVRDBMANAGER_H
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// End of File
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