content: package org.apache.solr.analysis;
  
  import java.io.IOException;
  
  import org.apache.lucene.analysis.CharArraySet;
  import org.apache.lucene.analysis.KeywordMarkerFilter;
  import org.apache.lucene.analysis.TokenStream;
  import org.apache.solr.common.ResourceLoader;
  import org.apache.solr.util.plugin.ResourceLoaderAware;
  
  /**
   * 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.
   */
  
  /**
   * Factory for {@link KeywordMarkerFilter}.
   * <pre class="prettyprint" >
   * &lt;fieldType name="text_keyword" class="solr.TextField" positionIncrementGap="100"&gt;
   *   &lt;analyzer&gt;
   *     &lt;tokenizer class="solr.WhitespaceTokenizerFactory"/&gt;
   *     &lt;filter class="solr.KeywordMarkerFilterFactory" protected="protectedkeyword.txt" ignoreCase="false"/&gt;
   *   &lt;/analyzer&gt;
   * &lt;/fieldType&gt;</pre> 
   * @version $Id$
   */
  public class KeywordMarkerFilterFactory extends BaseTokenFilterFactory implements ResourceLoaderAware {
    public static final String PROTECTED_TOKENS = "protected";
    private CharArraySet protectedWords;
    private boolean ignoreCase;
    
    public void inform(ResourceLoader loader) {
      String wordFiles = args.get(PROTECTED_TOKENS);
      ignoreCase = getBoolean("ignoreCase", false);
      if (wordFiles != null) {  
        try {
          protectedWords = getWordSet(loader, wordFiles, ignoreCase);
        } catch (IOException e) {
          throw new RuntimeException(e);
        }
      }
    }
    
    public boolean isIgnoreCase() {
      return ignoreCase;
    }
  
    public TokenStream create(TokenStream input) {
      return protectedWords == null ? input : new KeywordMarkerFilter(input, protectedWords);
    }
  }
  