content: package org.apache.solr.analysis;
  
  /**
   * 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.
   */
  
  import java.io.IOException;
  import java.util.List;
  
  import org.apache.lucene.analysis.CharArrayMap;
  import org.apache.lucene.analysis.TokenStream;
  import org.apache.lucene.analysis.miscellaneous.StemmerOverrideFilter;
  import org.apache.solr.common.ResourceLoader;
  import org.apache.solr.common.util.StrUtils;
  import org.apache.solr.util.plugin.ResourceLoaderAware;
  
  /**
   * Factory for {@link StemmerOverrideFilter}.
   * <pre class="prettyprint" >
   * &lt;fieldType name="text_dicstem" class="solr.TextField" positionIncrementGap="100"&gt;
   *   &lt;analyzer&gt;
   *     &lt;tokenizer class="solr.WhitespaceTokenizerFactory"/&gt;
   *     &lt;filter class="solr.StemmerOverrideFilterFactory" dictionary="dictionary.txt" ignoreCase="false"/&gt;
   *   &lt;/analyzer&gt;
   * &lt;/fieldType&gt;</pre>
   * @version $Id
   */
  public class StemmerOverrideFilterFactory extends BaseTokenFilterFactory implements ResourceLoaderAware {
    private CharArrayMap<String> dictionary = null;
    private boolean ignoreCase;
  
    public void inform(ResourceLoader loader) {
      String dictionaryFiles = args.get("dictionary");
      ignoreCase = getBoolean("ignoreCase", false);
      if (dictionaryFiles != null) {
        assureMatchVersion();
        List<String> files = StrUtils.splitFileNames(dictionaryFiles);
        try {
          if (files.size() > 0) {
            dictionary = new CharArrayMap<String>(luceneMatchVersion, 
                files.size() * 10, ignoreCase);
            for (String file : files) {
              List<String> list = loader.getLines(file.trim());
              for (String line : list) {
                String[] mapping = line.split("\t", 2);
                dictionary.put(mapping[0], mapping[1]);
              }
            }
          }
        } catch (IOException e) {
          throw new RuntimeException(e);
        }
      }
    }
  
    public boolean isIgnoreCase() {
      return ignoreCase;
    }
  
    public TokenStream create(TokenStream input) {
      return dictionary == null ? input : new StemmerOverrideFilter(luceneMatchVersion, input, dictionary);
    }
  }
  