--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/omads/omadsextensions/adapters/mediads/inc/changefinder.h	Tue Aug 31 15:05:37 2010 +0300
@@ -0,0 +1,202 @@
+/*
+* Copyright (c) 2009 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:  CChangeFinder class header
+*
+*/
+
+
+
+#ifndef __CHANGEFINDER_H__
+#define __CHANGEFINDER_H__
+
+// INCLUDES
+#include <msvids.h>
+#include <nsmlchangefinder.h>
+#include "snapshotitem.h"
+
+// DATATYPES
+typedef CArrayFixSeg<TSnapshotItem> CSnapshotArray;
+
+// Granularity used with dynamic array
+const TInt KSnapshotGranularity = 32;
+
+// CLASS DECLARATION
+
+/**
+ * @brief CChangeFinder Class
+ * This is a ChangeFinder class, which can be used to track down changes in the media store.
+ * It's functionality is equal to CSmlChangeFinder. Because neither of these classes contained virtual
+ * functionality, the functionality of this class couldn't be inherited from the CSmlChangeFinder
+ */
+class CChangeFinder : public CBase
+	{ 
+public:
+	
+	/**
+    * Class constructor, Creates a new class instance.
+    *
+    * @param aSyncRelationship  IN: Reference to MSmlSyncRelationship interface.
+    * @param aKey               IN: Key that is used in sorting snapshot.
+    * @param aStreamUid         IN: Snapshot stream UID.
+    * @return CChangeFinder*, New ChangeFinder instance.
+    */
+    static CChangeFinder* NewL( MSmlSyncRelationship& aSyncRelationship, 
+                               TKeyArrayFix aKey,
+                               TBool& aHasHistory, 
+                               TInt aStreamUid = KNSmlDefaultSnapshotStreamUID );
+
+    /**
+    * Class destructor.
+    */
+	~CChangeFinder();
+	
+    /**
+    * Close ChangeFinder object, stores snapshot.
+    */
+	void CloseL();
+
+    /**
+    * Reset change information, makes all content new from ChangeFinder point of view.
+    */
+	void ResetL();
+
+    /**
+    * Find changed items by comparing snapshots.
+    * 
+    * @param aChangedUids   IN: Array for results.
+    */
+	void FindChangedItemsL( CNSmlDataItemUidSet& aChangedUids );
+
+    /**
+    * Find deleteed items by comparing snapshots.
+    * 
+    * @param aDeletedUids   IN: Array for results.
+    */
+	void FindDeletedItemsL( CNSmlDataItemUidSet& aDeletedUids );
+	
+    /**
+    * Find new items by comparing snapshots.
+    * 
+    * @param aNewUids   IN: Array for results.
+    */	
+	void FindNewItemsL(CNSmlDataItemUidSet& aNewUids);
+	
+    /**
+    * Add item to snapshot, it is no loger reported.
+    * 
+    * @param aItem   IN: item to add.
+    */
+	void ItemAddedL( const TSnapshotItem& aItem );
+
+    /**
+    * Delete item from snapshot, it is no loger reported.
+    * 
+    * @param aItem   IN: item to delete.
+    */
+	void ItemDeletedL( const TSnapshotItem& aItem );
+	
+    /**
+    * Update item to snapshot, it is no loger reported.
+    * 
+    * @param aItem   IN: item to update.
+    */
+	void ItemUpdatedL( const TSnapshotItem& aItem );
+
+    /**
+    * Commit all changes to snapshot, there's nothing to report anymore.
+    */
+	void CommitChangesL();
+
+    /**
+    * Commit a set of items to snapshot, these items won't be reported anymore.
+    * 
+    * @param aUids   IN: a set of items to commit.
+    */
+	void CommitChangesL( const MSmlDataItemUidSet& aUids );
+	
+	/**
+    * Sets new snapshot to compare against.
+    * 
+    * @param aNewSnapshot   IN: a new snapshot.
+    */
+	void SetNewSnapshot( CSnapshotArray* aNewSnapshot );
+	
+	/**
+    * Retrieves DataStore id number.
+    *
+    * @return TInt64, DataStore id.
+    */
+	TInt64 DataStoreUid() const;
+
+	/**
+    * Sets DataStore id number.
+    * 
+    * @param aUid   IN: a new datastore id.
+    */
+	void SetDataStoreUid( TInt64 aUid );
+	
+private:
+	
+    /**
+    * C++ Constructor
+    *
+    * @param aSyncRelationship  IN: Reference to MSmlSyncRelationship interface.
+    * @param aKey               IN: Key that is used in sorting snapshot.
+    * @param aStreamUid         IN: Snapshot stream UID.
+    */    
+	CChangeFinder( MSmlSyncRelationship& aSyncRelationship, 
+	              TKeyArrayFix aKey,
+	              TInt aStreamUid );
+    
+    /**
+    * 2nd-phase Constructor
+    *
+    * @param aHasHistory   IN: ETrue, if there was synchronization history.
+    */    
+    void ConstructL( TBool& aHasHistory );
+    
+private:
+
+    /**
+    * Allows access to streams.
+    */
+	MSmlSyncRelationship& iSyncRelationship;
+	
+    /**
+    * New snapshot to compare against.
+    */	
+	CSnapshotArray* iCurrentSnapshot;
+
+    /**
+    * Current snapshot.
+    */
+	CSnapshotArray* iOldSnapshot;
+	
+    /**
+    * Key that is used in sorting snapshot.
+    */
+	TKeyArrayFix iKey;
+	
+    /**
+    * Stream id number to access sync relationship.
+    */	
+	TInt iStreamUid;
+	
+    /**
+    * Data store id number.
+    */	
+	TInt64 iDataStoreUid;
+    };
+
+#endif // __CHANGEFINDER_H__