/**********************************************************************
 *
 * lucenequeryfilter.h -- new queryfilter to use lucene 
 * Copyright (C) 1999  The New Zealand Digital Library Project
 *
 * A component of the Greenstone digital library software
 * from the New Zealand Digital Library Project at the
 * University of Waikato, New Zealand.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 * $Id$
 *
 *********************************************************************/


#ifndef LUCENEQUERYFILTER_H
#define LUCENEQUERYFILTER_H

#include "fieldedqueryfilter.h"

class lucenequeryfilterclass : public fieldedqueryfilterclass {
protected:

  stringmap sortfieldmap;

  // mgsearchptr and db_ptr are assumed to be valid
  void do_multi_query (const FilterRequest_t &request,
		       const vector<queryparamclass> &query_params,
		       queryresultsclass &multiresults,
		       comerror_t &err, ostream &logout);

  void set_queryparam_defaults(queryparamclass &query );
  bool set_queryparam_field(const OptionValue_t &option, queryparamclass &query);

public:
  lucenequeryfilterclass ();
  virtual ~lucenequeryfilterclass ();

  void configure (const text_t &key, const text_tarray &cfgline);
  bool init (ostream &logout);
  void filter (const FilterRequest_t &request,
		       FilterResponse_t &response,
		       comerror_t &err, ostream &logout);
  
  void browsefilter(const FilterRequest_t &request,
		    FilterResponse_t &response,
		    comerror_t &err, ostream &logout);  


};

#endif