--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/searchengine/cpix/cpix/inc/private/prefixopt.h	Mon May 03 13:33:22 2010 +0300
@@ -0,0 +1,64 @@
+/*
+* Copyright (c) 2010 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 PREFIXOPT_H_
+#define PREFIXOPT_H_
+
+#include <string>
+#include <wchar.h>
+
+// Forward declarations
+namespace lucene { 
+	namespace search {
+		class Query;  
+	}
+}
+
+namespace Cpix 
+{
+
+	/**
+	 * Goes throught the query hiearchy and converts queries of 
+	 * form "field:c*" into form "field_prefix:c".
+	 * 
+	 */
+	class PrefixOptQueryRewriter
+	{
+		public:
+		
+			PrefixOptQueryRewriter(int maxPrefixLength, 
+								   const wchar_t* optimizedField, 
+								   const wchar_t* prefixField);
+			
+			~PrefixOptQueryRewriter();
+		
+			std::auto_ptr<lucene::search::Query>
+				rewrite(std::auto_ptr<lucene::search::Query> query);
+			
+		private: 
+			
+			int maxPrefixLength_; 
+			
+			std::wstring optimizedField_; 
+			
+			std::wstring prefixField_;
+			
+	};
+
+}
+
+#endif /* PREFIXOPT_H_ */