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PriorFactory.hpp

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/*==========================================================================
 * Copyright (c) 2004 University of Massachusetts.  All Rights Reserved.
 *
 * Use of the Lemur Toolkit for Language Modeling and Information Retrieval
 * is subject to the terms of the software license set forth in the LICENSE
 * file included with this software, and also available at
 * http://www.lemurproject.org/license.html
 *
 *==========================================================================
*/


//
// PriorFactory
//
// 4 May 2004 -- tds
//

#ifndef INDRI_PRIORFACTORY_HPP
#define INDRI_PRIORFACTORY_HPP

#include "indri/QuerySpec.hpp"
#include "indri/Parameters.hpp"

class PriorFactory {
private:
  struct prior_data {
    std::string field;
    std::map<int, indri::lang::PriorNode::tuple_type> tuples;
  };

  Parameters _parameters;
  std::map<std::string, prior_data> _data;

  void _readPriorFile( prior_data& data, const std::string& fileName );
  void _readParamValues( prior_data& data, class Parameters& range );

public:
  PriorFactory();
  PriorFactory( Parameters& parameters );
  void initialize();
  indri::lang::PriorNode* create( const std::string& name );
};

#endif // INDRI_PRIORFACTORY_HPP

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