/**
* 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());
}
}