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StringQuery.hpp

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/*==========================================================================
 * Copyright (c) 2004 Carnegie Mellon University.  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
 *
 *==========================================================================
*/

// tnt - 6/2004

#ifndef _STRINGQUERY_HPP
#define _STRINGQUERY_HPP

#include "TermQuery.hpp"
#include "TextHandler.hpp"
#include "common_headers.hpp"


class StringQuery: public TermQuery, public TextHandler {
public:
  StringQuery();
  StringQuery(const char* query, const char* qid=NULL);
  StringQuery(const string& query, const string& qid="");
  ~StringQuery();

  void startTermIteration() const{iter = 0;}
  bool hasMore() const{ return iter < tokens.size();}
  const Term* nextTerm() const;

  void addTerm(const string& token);
  void addTerm(const char* token);
  void parse(const string& token);

  char* handleWord(char* word);
  char* handleSymbol(char* sym);
  
protected:
  vector<string> tokens;
  mutable int iter;
  mutable Term tt;
};


#endif

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