// original code from Apache Solr - ported to work with Lucene 3.x and reformatted to Search coding style
/**
* 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 java.io.IOException;
import java.util.Map;
import java.util.Set;
import org.apache.lucene.analysis.CharArraySet;
import org.apache.lucene.analysis.StopAnalyzer;
import org.apache.lucene.analysis.StopFilter;
import org.apache.lucene.analysis.TokenStream;
import org.apache.solr.common.ResourceLoader;
import org.apache.solr.util.plugin.ResourceLoaderAware;
/**
* @version $Id: StopFilterFactory.java 929782 2010-04-01 02:15:27Z rmuir $
*/
public class StopFilterFactory extends BaseTokenFilterFactory implements ResourceLoaderAware {
@Override
public void init(Map<String, String> args) {
super.init( args );
assureMatchVersion();
}
public void inform(ResourceLoader loader) {
String stopWordFiles = args.get( "words" );
ignoreCase = getBoolean( "ignoreCase", false );
enablePositionIncrements = getBoolean( "enablePositionIncrements", false );
if ( stopWordFiles != null ) {
try {
stopWords = getWordSet( loader, stopWordFiles, ignoreCase );
}
catch ( IOException e ) {
throw new RuntimeException( e );
}
}
else {
stopWords = new CharArraySet( StopAnalyzer.ENGLISH_STOP_WORDS_SET, ignoreCase );
}
}
private CharArraySet stopWords;
private boolean ignoreCase;
private boolean enablePositionIncrements;
public boolean isEnablePositionIncrements() {
return enablePositionIncrements;
}
public boolean isIgnoreCase() {
return ignoreCase;
}
public Set<?> getStopWords() {
return stopWords;
}
public StopFilter create(TokenStream input) {
StopFilter stopFilter = new StopFilter( enablePositionIncrements, input, stopWords, ignoreCase );
return stopFilter;
}
}