/*

* 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 PREFIXQUERYPARSER_H_

#define PREFIXQUERYPARSER_H_

#include <memory>

#include "queryparser.h"

#include "cpixmaindefs.h"

namespace lucene {

	namespace analysis {

		class Token;

	}

	namespace search {

		class Query; 

	}

}

namespace Cpt {

	namespace Lex {

		class Token; 

	}

}

namespace Cpix {

	/**

	 * Cpix special query parser.

	 *

	 * Potential parameters 

	 *  

	 *    * Target Field (makes sense)

	 *    * QueryAnalyzer (doesn't make sense)

	 *    * PrefixAnalyzer (doesn't make sense) 

	 */

	class PrefixQueryParser : public IQueryParser {

		public:

			PrefixQueryParser(const wchar_t* field = LCPIX_DEFAULT_FIELD); 

			virtual ~PrefixQueryParser(); 

			virtual std::auto_ptr<lucene::search::Query> parse(const wchar_t* query);

			virtual const wchar_t* getField() const;

			virtual void setDefaultOperator(cpix_QP_Operator op);

		private:

			std::auto_ptr<lucene::search::Query> toQuery(Cpt::Lex::Token word);

			bool usePrefixFor(lucene::analysis::Token& token);

		private: 

			std::wstring field_; 

	};

}

#endif /* PREFIXQUERYPARSER_H_ */