content: /**
   * Licensed to the Apache Software Foundation (ASF) under one or more
   * contributor license agreements.  See the NOTICE file distributed with
   * this work for additional information regarding copyright ownership.
   * The ASF licenses this file to You under the Apache License, Version 2.0
   * (the "License"); you may not use this file except in compliance with
   * the License.  You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  package org.apache.solr.analysis;
  
  import org.apache.lucene.analysis.CharArraySet;
  import org.apache.lucene.analysis.KeywordMarkerFilter;
  import org.apache.lucene.analysis.TokenFilter;
  import org.apache.lucene.analysis.TokenStream;
  import org.apache.lucene.analysis.snowball.SnowballFilter;
  import org.apache.solr.common.ResourceLoader;
  import org.apache.solr.util.plugin.ResourceLoaderAware;
  
  import java.io.IOException;
  import java.util.Map;
  
  /**
   * @version $Id: EnglishPorterFilterFactory.java 1065312 2011-01-30 16:08:25Z rmuir $
   *
   * @deprecated Use SnowballPorterFilterFactory with language="English" instead
   */
  @Deprecated
  public class EnglishPorterFilterFactory extends BaseTokenFilterFactory implements ResourceLoaderAware {
    public static final String PROTECTED_TOKENS = "protected";
  
    @Override
    public void init(Map<String,String> args) {
      super.init(args);
      warnDeprecated("use PorterStemFilterFactory (Porter1) or SnowballPorterFilterFactory with 'English' (Porter2) instead");
    }
    
    public void inform(ResourceLoader loader) {
      String wordFiles = args.get(PROTECTED_TOKENS);
      if (wordFiles != null) {
        try {
          protectedWords = getWordSet(loader, wordFiles, false);
        } catch (IOException e) {
          throw new RuntimeException(e);
        }
      }
    }
  
    private CharArraySet protectedWords = null;
  
    public TokenFilter create(TokenStream input) {
      if (protectedWords != null)
        input = new KeywordMarkerFilter(input, protectedWords);
      return new SnowballFilter(input, new org.tartarus.snowball.ext.EnglishStemmer());
    }
  
  }
  