--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/PECengine/StorageManager2/ServerSrc/TPEngStorageServerBTreeKeys.h	Thu Dec 17 08:41:52 2009 +0200
@@ -0,0 +1,67 @@
+/*
+* Copyright (c) 2002 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 class handls key operation
+*
+*/
+
+#ifndef __TPENGSTORAGESERVERBTREEKEYS_H__
+#define __TPENGSTORAGESERVERBTREEKEYS_H__
+
+// INCLUDES
+#include	<s32btree.h>
+#include	"CPEngDataEntry.h"
+#include	"PEngStorageServerCommon.h"
+
+
+// CLASS DECLARATION
+class TPEngBaseKey : public MBtreeKey
+    {
+    public:
+        /*
+         *	Return key which is between aLeft and aRight. Can be also equal to left.
+         */
+        void Between( const TAny* aLeft, const TAny* aRight, TBtreePivot& aPivot ) const
+            {
+            __ASSERT_ALWAYS( aLeft && aRight, User::Panic( KStorageServerName, EErrorInBTree ) );
+            //Return key equal to left.
+            aPivot.Copy( reinterpret_cast<const TUint8*>( aLeft ), 4 );
+            }
+
+        //Compare two keys.
+        TInt Compare( const TAny* aLeft, const TAny* aRight ) const
+            {
+            __ASSERT_ALWAYS( aLeft && aRight, User::Panic( KStorageServerName, EErrorInBTree ) );
+            HBufC* left = *reinterpret_cast<HBufC**>( const_cast<TAny*>( aLeft ) );
+            HBufC* right = *reinterpret_cast<HBufC**>( const_cast<TAny*>( aRight ) );
+            TInt ret = left->CompareF( *right );
+            return ret;
+            }
+    };
+
+class TPEngDataEntryKey : public TPEngBaseKey
+    {
+    public:
+
+        //Get pointer to entry key.(HBufC**)
+        const TAny* Key( const TAny* anEntry ) const
+            {
+            __ASSERT_ALWAYS( anEntry, User::Panic( KStorageServerName, EErrorInBTree ) );
+            CPEngDataEntry* entry = *reinterpret_cast<CPEngDataEntry**>( const_cast<TAny*>( anEntry ) );
+            return entry->KeyBuffer();
+            }
+    };
+
+#endif      //  __TPENGSTORAGESERVERBTREEKEYS_H__
+
+//  End of File