--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/cbs/CbsServer/ServerInc/CCbsDbImp.H	Tue Feb 02 01:11:09 2010 +0200
@@ -0,0 +1,224 @@
+/*
+* Copyright (c) 2003 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 file contains the header file of the CCbsDbImp class
+*
+*/
+
+
+
+
+#ifndef     CCBSDBIMP_H
+#define     CCBSDBIMP_H
+
+// INCLUDES
+#include <f32file.h>
+
+// CONSTANTS
+enum TCbsBackupRequest
+    {
+    ECbsNoBackup,
+    ECbsBackup,
+    ECbsRestore,
+    ECbsBackupNotDefined
+    };
+
+// FORWARD DECLARATIONS
+class CCbsDbImpSettings;
+class CCbsDbImpTopicList;
+class CCbsDbImpTopicCollection;
+class CCbsDbImpTopicMessages;
+class CBaBackupSessionWrapper;
+class CCbsBackupMonitor;
+class CCbsDiskSpaceMonitor;
+
+//  CLASS DECLARATION 
+
+/**
+*   Basis for the implementation of the database.
+*
+*   Constructs instances of database subclasses CCbsDbImpSettings,
+*   CCbsDbImpTopicCollection, CCbsDbTopicList and CCbsDbTopicMessages.
+*   On initialization determines whether datafiles already exist.
+*   If all of them are present and valid, no special action is taken.
+*
+*   If some or all datafiles are missing or corrupt, all datafiles
+*   are deleted and new files created.
+*   Factory default settings, if available, are then loaded from
+*   Shared Data and stored in server datafiles. This is done by
+*   database subinstances.
+*/
+class CCbsDbImp : public CBase
+    {
+    public:        // New functions
+
+        /**
+        *   Creates an instance of the class.
+        */
+        static CCbsDbImp* NewL();
+
+        /**
+         *   The destructor.
+         */
+        ~CCbsDbImp();
+    
+    public:
+
+        /**
+        *   Returns a reference to the current active topic list. 
+        *   
+        *   Using that instance the clients of the database can manage the 
+        *   topic list such as add and delete topics.
+        *
+        *   @return reference to the topic list.
+        */
+        CCbsDbImpTopicList& TopicListL();
+    
+        /**
+        *   Returns a reference to the current topic messages DB object.
+        *
+        *   @return reference to the topic messages.
+        */
+        CCbsDbImpTopicMessages& TopicMessagesL();
+
+        /**
+        *   Returns a reference to the settings DB object.
+        *    
+        *   @return reference to the settings.
+        */
+        CCbsDbImpSettings& SettingsL();
+
+        /**
+        *   Returns a reference to the topic collection. 
+        *   
+        *   @return reference to the topic collection.
+        */
+        CCbsDbImpTopicCollection& TopicCollectionL();
+
+        /**
+        *   Returns a reference to the backup wrapper. 
+        *   
+        *   @return reference to the backup wrapper.
+        */
+        CBaBackupSessionWrapper& BackupWrapperL();
+
+        /**
+        *   Checks if the database is initialized.
+        *
+        *   @return     ETrue if database has been initialized.
+        */
+        TBool IsInitialized() const;
+
+        /**
+        *   Registers for a notification for critical level.
+        */
+        void WaitForCriticalLevel();
+
+        /**
+        *   Deregisters from critical level notification.
+        */
+        void WaitForCriticalLevelCancel();
+        
+        /**
+        *   Changes file lock states as requested.
+        */
+        void ChangeFileLocksL( const TCbsBackupRequest& aRequest );
+        
+        /**
+        *   Constructs DB components.
+        *
+        */
+        void CreateComponentsL();
+
+    private:
+
+        /**
+        *   Constructor.
+        */
+        CCbsDbImp();
+
+        /**
+        *   The method creates the member variables and so finalizes 
+        *   the construction. It will leave if the construction fails.
+        */
+        void ConstructL();
+
+        /**
+        *   Constructs CCbsDbImpSettings.
+        *
+        *   @param  aFileName               Name of the settings file.
+        *   @return                         A ready-made CCbsDbImpSettings object.
+        */
+        CCbsDbImpSettings* CreateSettingsL();
+
+        /**
+        *   Constructs CCbsDbImpTopicList.
+        *
+        *   @param  aTopicsFile             Name of the topics file.
+        *   @param  aMessagesFile           Name of the messages file.
+        *   @return                         A ready-made CCbsDbImpTopicList object.
+        */
+        CCbsDbImpTopicList* CreateTopicListL( const TDesC& aTopicsFile,
+                                              const TDesC& aMessagesFile );
+
+        /**
+        *   Constructs CCbsDbImpTopicMessages.
+        *
+        *   @param  aTopicList              The CCbsDbImpTopicList to link to.
+        *   @return                         A ready-made CCbsDbImpTopicMessages object.
+        */
+        CCbsDbImpTopicMessages* CreateTopicMessagesL( CCbsDbImpTopicList& aTopicList );
+
+        /**
+        *   Constructs CCbsDbImpTopicCollection.
+        *
+        *   @param  aTopicList              The CCbsDbImpTopicList to link to.
+        *   @return                         A ready-made CCbsDbImpTopicCollection object.
+        */
+        CCbsDbImpTopicCollection* CreateTopicCollectionL();
+
+        /**
+        *   Free DB components.
+        */
+        void DeleteComponents();        
+        
+    private:
+        // Owns: DB settings object.
+        CCbsDbImpSettings* iSettings;
+
+        // Owns: DB topic list object.
+        CCbsDbImpTopicList* iTopicList;
+
+        // Owns: DB topic collection object. 
+        CCbsDbImpTopicCollection* iTopicCollection;
+
+        // Owns: DB topic messages object.
+        CCbsDbImpTopicMessages* iTopicMessages;
+
+        // File server session shared by all DB objects. 
+        RFs iFs;
+
+        // Owns: The backup wrapper
+        CBaBackupSessionWrapper* iBackupWrapper;
+        
+        // Owns: The backup monitor, uses PubSub
+        CCbsBackupMonitor* iBackupMonitor;
+        
+        // Owns: Disk space monitor, uses PubSub
+        CCbsDiskSpaceMonitor* iDiskSpaceMonitor;
+
+    };
+
+#endif      //  CCBSDBIMP_H   
+            
+// End of File