diff -r 000000000000 -r f979ecb2b13e calendarui/server/CalenSvr/inc/CalenSvrDBManager.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/calendarui/server/CalenSvr/inc/CalenSvrDBManager.h	Tue Feb 02 10:12:19 2010 +0200
@@ -0,0 +1,133 @@
+/*
+* Copyright (c) 2002-2004 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:   This class manages Calendar Server's connection to Agenda Server
+*                and Calendar database. 
+*
+*/
+
+
+
+#ifndef CALENSVRDBMANAGER_H
+#define CALENSVRDBMANAGER_H
+
+// INCLUDES
+#include "PropertyObserver.h"
+#include <calprogresscallback.h>    // MCalProgressCallBack
+
+#include <e32base.h>
+
+// FORWARD DECLARATIONS
+class CCalenGlobalData;
+
+/**
+ * CCalenSvrDBManager manages Calendar Server's connection to Agenda Server
+ * and Calendar database. It optimizes behavior so that Agenda Server
+ * is not opened and closed unnecessarily often in short period of time, as
+ * opening can be costly operation as it requires
+ * 1) Starting Agenda Server process
+ * 2) Opening database and creating indexes. Indexes are stored in
+ *   Agenda Server, and reused by all clients of same database. 
+ * 
+ * It uses Calendar Engine to do actual opening. It owns Calendar Engine.
+ */
+NONSHARABLE_CLASS( CCalenSvrDBManager ) : 
+    public CBase, 
+    public MPropertyChangeHandler,
+    public MCalProgressCallBack
+
+    {
+public:
+    NONSHARABLE_CLASS( MCalenDBUser )
+        {
+    public:
+        virtual void DatabaseOpened() = 0;
+        virtual void DatabaseTemporarilyClosed() = 0;
+        };
+
+public: // Construction and destruction
+    static CCalenSvrDBManager* NewL();
+    virtual ~CCalenSvrDBManager();
+
+public: // New methods 
+    /** Called by Calendar server, when booting is ready 
+     */
+    void BootReadyL();
+
+    /** Register new user for Calendar database. Database is kept 
+     * open as long as there are users. 
+     */
+    void RegisterUserL(MCalenDBUser& aUser); 
+
+    /** Unregister user from Calendar database. When there are no more 
+     * users, CCalenSvrDBManager sets small delay and closes database
+     * session. 
+     */
+    void UnregisterUserL(MCalenDBUser& aUser);
+
+public: // From PropertyObserver
+    void HandlePropertyChange(const TUid& aCategory, const TUint& aKey, const TInt& aValue);
+   
+public: // from   MCalProgressCallBack
+    void Completed(TInt aError);
+    TBool NotifyProgress();
+    void Progress(TInt aPercentageCompleted);
+
+private:
+    void OpenDatabaseCompletedL();
+
+private: // Timer handling
+    void StartClosingTimer();
+    void ClosingTimeOut();
+    static TInt ClosingTimeOutCallback(TAny* aAny);
+
+private: // Restore handling
+    void RestoreStarted();
+    void RestoreFinishedL();
+
+private: // construction 
+    CCalenSvrDBManager();
+    void ConstructL();
+
+private: // new functions
+    /**
+     *
+     **/
+    void NotifyUsersL();
+
+private:
+    enum TState 
+    {
+        EStateBooting, // FIXME: if unregister works correctly this is not needed
+        EStateOpeningDB,
+        EStateDBOpen,
+        EStateGoingToCloseDB, 
+        EStateDBClosed,
+        EStateRestoring
+    };
+
+    TState iState;
+    RPointerArray<MCalenDBUser> iUsers;
+    CPeriodic* iClosingTimer;
+
+    CCalenGlobalData* iGlobalData;
+
+    // ?one_line_short_description_of_data
+    CPropertyObserver* iBackupObserver;
+
+    };
+
+#endif // CALENSVRDBMANAGER_H
+
+
+// End of File