diff -r 000000000000 -r ba25891c3a9e ncdengine/provider/storage/inc/ncddbstoragemanager.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ncdengine/provider/storage/inc/ncddbstoragemanager.h	Thu Dec 17 08:51:10 2009 +0200
@@ -0,0 +1,208 @@
+/*
+* Copyright (c) 2006 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 MCSTORAGEMANAGER_H
+#define MCSTORAGEMANAGER_H
+
+#include "ncddatabasestorage.h"
+#include "ncdstoragebase.h"
+
+
+#include <e32base.h>
+#include <bamdesca.h>
+
+
+class CNcdStorageBase;
+
+
+
+class CNcdDbStorageManager : 
+    public CNcdStorageBaseListener,
+    public MNcdDatabaseStorage
+{
+    class CNcdDbStorageManagerData;
+
+    public:
+
+         static CNcdDbStorageManager* NewLC(
+            RFs& aFs,
+            const TDesC& aStorageUid,
+            const TDesC& aStorageFolder,
+            const TDesC& aStorageName );
+
+         ~CNcdDbStorageManager();
+
+
+    public: // New methods
+         
+
+         TInt CommitCachedItems();
+
+         void RollbackItems();
+
+
+    public: // From MNcdDatabaseStorage
+
+
+        /**
+         * Returns ponter to storage item. If storage item doesn't exist
+         * it is created. Ownerhip of the storage item is not transferred
+         * to caller.
+         */
+         MNcdStorageItem* StorageItemL( const TDesC& aUid, TInt aType );
+
+        /**
+         * Gets all storage items from storage. This method doens't create
+         * new items to storage but returns all items being currently stored
+         * to it.
+         *
+         * @param aItems An array where to storage items will be added.
+         */
+         void StorageItemsL( RPointerArray<MNcdStorageItem>& aItems );
+
+
+        void RemoveItemsL( 
+            const RArray<RNcdDatabaseItems>& aDoNotRemoveItems );
+
+
+        /**
+         * Begins transaction into storage.
+         */
+         void Begin();
+
+        /**
+         * Commits changes to storage.
+         */
+         void CommitL();
+
+        /**
+         * Discards changes and restores storage to state it was before
+         * transaction was started.
+         */
+         void Rollback();
+
+        /**
+         * Ensures that given storage item exists in storage.
+         *
+         * NOTE: It is possible that storage item is created and exists
+         * but it is not stored to storage.
+         *
+         * @param aStorageItem The item to be checked
+         * @return Boolean value indicating whether the item exsists in
+         * storage.
+         */
+         TBool ItemExistsInStorageL( MNcdStorageItem& aStorageItem );
+
+        /**
+         * Ensures that given storage item exists in storage.
+         *
+         * NOTE: It is possible that storage item is created and exists
+         * but it is not stored to storage.
+         *
+         * @param aUid Uid of the item to be checked
+         * @param aType Type of the item to be checked
+         * @return Boolean value indicating whether the item exsists in
+         * storage.
+         */
+         TBool ItemExistsInStorageL( const TDesC& aUid, TInt aType );
+
+
+        /**
+         * Storage UID getter
+         * @return Storage UID
+         */
+        const TDesC& Uid() const;
+
+
+        /**
+         * @see MNcdDatabaseStorage::Size()
+         */
+        TNcdDatabaseSize Size() const;
+        
+
+        /**
+         * @see MNcdDatabaseStorage::Compact()
+         */
+        void Compact();
+        
+        
+    public: // From CNcdStorageBaseListener
+
+         void CacheOpened();
+
+         void CacheReadyL();
+
+         void NotifyRollback();
+
+
+    private:
+
+        CNcdDbStorageManager();
+
+        void ConstructL(
+            RFs& aFs,
+            const TDesC& aStorageUid,
+            const TDesC& aStorageFolder,
+            const TDesC& aStorageName );
+
+
+    private:
+
+        class CNcdDbStorageManagerData : public CBase
+            {
+            public:
+
+                CNcdDbStorageManagerData( CNcdDbStorageManager* aRoot );
+
+                ~CNcdDbStorageManagerData();
+
+            public:
+
+                void StorageOpened();
+
+
+                void StorageClosedL();
+
+                TInt OpenStorages();
+
+                void Rollback();
+
+
+            private:
+
+                CNcdDbStorageManager*      iRoot;                
+                
+                TInt                    iOpenStorages;
+
+            };
+
+
+    private:
+
+        CNcdDbStorageManagerData*           iData;
+
+        CNcdStorageBase*                    iStorage;
+
+        TInt                                iLocallyOpenCount;
+
+        TBool                               iForceOpen;
+
+};
+
+
+#endif