code: /* LanguageTool, a natural language style checker 
   * Copyright (C) 2005 Daniel Naber (http://www.danielnaber.de)
   * 
   * This library is free software; you can redistribute it and/or
   * modify it under the terms of the GNU Lesser General Public
   * License as published by the Free Software Foundation; either
   * version 2.1 of the License, or (at your option) any later version.
   *
   * This library 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
   * Lesser General Public License for more details.
   *
   * You should have received a copy of the GNU Lesser General Public
   * License along with this library; if not, write to the Free Software
   * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301
   * USA
   */
  package org.languagetool.dev.index;
  
  import org.apache.lucene.analysis.Analyzer;
  import org.apache.lucene.analysis.TokenStream;
  import org.apache.lucene.analysis.Tokenizer;
  import org.languagetool.JLanguageTool;
  
  /**
   * LanguageToolAnalyzer emits the entire input (i.e. a sentence) as a single token by
   * AnyCharTokenizer, and then use JLanguageTool to analyze and tag the tokens by LanguageToolFilter.
   * 
   * @author Tao Lin
   */
  public final class LanguageToolAnalyzer extends Analyzer {
  
    private final JLanguageTool languageTool;
    private final boolean toLowerCase;
  
    public LanguageToolAnalyzer(JLanguageTool languageTool, boolean toLowerCase) {
      super();
      this.languageTool = languageTool;
      this.toLowerCase = toLowerCase;
    }
  
    @Override
    protected TokenStreamComponents createComponents(String s) {
      Tokenizer tokenizer = new AnyCharTokenizer();
      TokenStream result = new LanguageToolFilter(tokenizer, languageTool, toLowerCase);
      return new TokenStreamComponents(tokenizer, result);
    }
  
  }
  