diff -r 000000000000 -r a2952bb97e68 mmappcomponents/harvester/filehandler/inc/mpxdbsynchronizer.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mmappcomponents/harvester/filehandler/inc/mpxdbsynchronizer.h	Thu Dec 17 08:55:47 2009 +0200
@@ -0,0 +1,158 @@
+/*
+* Copyright (c) 2006-2007 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:  sync collection and harvester db contents
+*
+*/
+
+
+#ifndef CMPXDBSYNCHRONIZER_H
+#define CMPXDBSYNCHRONIZER_H
+
+// INCLUDES
+#include <e32base.h>
+
+// FORWARD DECLARATIONS
+class RFs;
+class MMPXDbSyncObserver;
+class MMPXCollectionUtility;
+class CMPXHarvesterDatabaseManager;
+class CMPXHarvesterDatabaseTable;
+
+/**
+ *  CMPXDbSynchronizer
+ *
+ *  Sync collection and harvester databases
+ *
+ *  @lib mpxfilehandler
+ *  @since S60 3.0
+ */
+NONSHARABLE_CLASS( CMPXDbSynchronizer ) : public CActive
+    {
+    enum ESyncState
+        {
+        ESyncStopped,
+        ESyncMusic,
+        ESyncPlaylist,
+        ESyncPodcast
+        };
+
+public:    
+    /**
+    * Two-phased constructor
+    * @param aObs synchronization observer
+    * @param aDbMng reference to the database manager
+    * @param aMusic reference to the music collection uid
+    * @param aPodcast reference to the podcast collection uid
+    * @param aFs file session
+    */
+    static CMPXDbSynchronizer* NewL(MMPXDbSyncObserver& aStateObs,
+                                    CMPXHarvesterDatabaseManager& aDbMng,
+                                    const TUid& aMusic,
+                                    const TUid& aPodcast,
+                                    RFs& aFs, 
+                                    TBool aDisablePodcast );
+
+    /**
+    * Virtual destructor
+    */
+    virtual ~CMPXDbSynchronizer();
+
+    /**
+    * Check databases on these drives for sync issues, result within a callback to observer
+    * @param aDrives the drives to be used
+    * @param aColUtil collection utility reference
+    */
+    void Synchronize(RArray<TInt>& aDbIndexes, MMPXCollectionUtility* aColUtil);
+
+protected: // From Base Class
+    /**
+    * From CActive
+    */
+    void RunL();
+    
+    /**
+    * From CActive
+    */
+    void DoCancel();
+    
+    /**
+    *  From CActive
+    */
+    TInt RunError(TInt aError);    
+
+private: // New Functions
+    /**
+    * Sync a portion of data to avoid blocking thread for long
+    * @return ETrue if there is more data to process
+    *         EFalse if the sync process is complete
+    */
+    TBool DoSynchronizeStepL();
+    
+    /**
+    * Handles what to do when synchronization is done
+    * @param aErr error to return to the client
+    */
+    void DoSynchronizeComplete(TInt aErr);
+
+    //Helper functions used inside DoSynchronizeStepL
+    void DoMusicTableSyncL(CMPXHarvesterDatabaseTable& aTable);
+    void DoPlaylistTableSyncL(CMPXHarvesterDatabaseTable& aTable);
+    void DoPodcastTableSyncL(CMPXHarvesterDatabaseTable& aTable);
+    //Misc helper functions for internal use
+    inline void CompleteSelf();
+    inline void GetTableCountL(TInt aDbId, TInt aTable);
+    inline TInt CopyTableRecordsL(CMPXHarvesterDatabaseTable& aTable,
+                                  TInt aColDbId, TInt aColTable);
+    
+private:
+    /**
+    * Private constructor
+    * @param aObs synchronization observer
+    * @param aDbMng reference to the database manager
+    * @param aMusic reference to the music collection uid
+    * @param aPodcast reference to the podcast collection uid
+    * @param aFs file session
+    */
+    CMPXDbSynchronizer(MMPXDbSyncObserver& aObs,
+                       CMPXHarvesterDatabaseManager& aDbMng,
+                       const TUid& aMusic,
+                       const TUid& aPodcast,
+                       RFs& aFs,
+                       TBool aDisablePodcast );
+
+    /**
+    * 2nd Phase constructor
+    */
+    void ConstructL();
+
+private: // data
+    MMPXDbSyncObserver&    iSyncObserver;
+    CMPXHarvesterDatabaseManager& iDBManager; // Not owned
+    MMPXCollectionUtility* iColUtil; //Not owned
+    const TUid&  iMusicUid;
+    const TUid&  iPodcastUid;
+    RFs&  iFs; // Not owned
+
+    // Databases on these drives to be synchronized
+    RArray<TInt>           iDbDrives;
+
+    ESyncState             iSyncState;
+    TInt                   iCurDrive;
+    TInt                   iDbRecTotalCount;
+    TInt                   iCurDbRecCount;
+    TInt                   iLastID;
+    TBool                  iDisablePodcasting;
+    };
+
+#endif // CMPXDBSYNCHRONIZER_H