--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/menufw/hierarchynavigator/hnmetadatamodel/inc/hnhelper.inl	Thu Dec 17 08:40:49 2009 +0200
@@ -0,0 +1,97 @@
+/*
+* Copyright (c) 2007-2008 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 HNHELPER_H
+#define HNHELPER_H
+
+#include <e32hashtab.h>
+
+/**
+ * Creates hash.
+ * 
+ * @param aBuf Descriptor.
+ * @return Hash.
+ */
+inline TUint32 HBuf16Hash( HBufC16* const &  aBuf )
+    {
+    return DefaultHash::Des16(*aBuf);
+    }
+    
+/**
+ * Creates hash.
+ * 
+ * @param aBuf Descriptor.
+ * @return Hash.
+ */
+inline TUint32 TDesC16Hash( const TDesC16* const &  aBuf )
+    {
+    return DefaultHash::Des16(*aBuf);
+    }
+
+/**
+ * Checks for indentity.
+ * 
+ * @param aL Descriptor.
+ * @param aR Descriptor.
+ * @return Bool.
+ */
+inline TBool HBuf16Ident( HBufC16* const & aL, HBufC16* const & aR )
+    {
+    return DefaultIdentity::Des16(*aL, *aR);
+    }
+
+/**
+ * Checks for indentity.
+ * 
+ * @param aL Descriptor.
+ * @param aR Descriptor.
+ * @return Bool.
+ */
+inline TBool TDesC16Ident( const TDesC16* const & aL, const TDesC16* const & aR )
+    {
+    return DefaultIdentity::Des16(*aL, *aR);
+    }
+
+/**
+ * Destroys both key and value object of a hashmap.
+ */
+template <class TKey, class TValue>
+void DestroyMapKeyAndValue( RHashMap< TKey*, TValue* > & aHashMap )
+	{
+	THashMapIter< TKey*, TValue* > iter( aHashMap );
+	while ( iter.NextKey() )
+		{
+		delete *(iter.CurrentKey());
+		delete *(iter.CurrentValue());
+		}
+	}
+
+/**
+ * Destroys just value object of a hashmap.
+ */
+template <class TKey, class TValue>
+void DestroyMapValue( RHashMap< TKey*, TValue* > & aHashMap )
+	{
+	THashMapIter< TKey*, TValue* > iter( aHashMap );
+	while ( iter.NextKey() )
+		{
+		delete *(iter.CurrentValue());
+		}
+	}
+
+#endif /* HNHELPER_H */