// 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.List;
import java.util.Map;
import java.util.Set;
import org.apache.lucene.analysis.StopFilter;
import org.apache.lucene.analysis.TokenStream;
import org.apache.lucene.analysis.compound.CompoundWordTokenFilterBase;
import org.apache.lucene.analysis.compound.DictionaryCompoundWordTokenFilter;
import org.apache.solr.common.ResourceLoader;
import org.apache.solr.common.SolrException;
import org.apache.solr.util.plugin.ResourceLoaderAware;
public class DictionaryCompoundWordTokenFilterFactory extends BaseTokenFilterFactory implements ResourceLoaderAware {
private Set dictionary;
private String dictFile;
private int minWordSize;
private int minSubwordSize;
private int maxSubwordSize;
private boolean onlyLongestMatch;
public void init(Map<String, String> args) {
super.init( args );
dictFile = args.get( "dictionary" );
if ( null == dictFile ) {
throw new SolrException(
SolrException.ErrorCode.SERVER_ERROR,
"Missing required parameter: dictionary"
);
}
minWordSize = getInt( "minWordSize", CompoundWordTokenFilterBase.DEFAULT_MIN_WORD_SIZE );
minSubwordSize = getInt( "minSubwordSize", CompoundWordTokenFilterBase.DEFAULT_MIN_SUBWORD_SIZE );
maxSubwordSize = getInt( "maxSubwordSize", CompoundWordTokenFilterBase.DEFAULT_MAX_SUBWORD_SIZE );
onlyLongestMatch = getBoolean( "onlyLongestMatch", true );
}
public void inform(ResourceLoader loader) {
try {
List<String> wlist = loader.getLines( dictFile );
dictionary = StopFilter.makeStopSet( ( String[] ) wlist.toArray( new String[0] ), false );
}
catch ( IOException e ) {
throw new RuntimeException( e );
}
}
public DictionaryCompoundWordTokenFilter create(TokenStream input) {
return new DictionaryCompoundWordTokenFilter(
input, dictionary, minWordSize, minSubwordSize, maxSubwordSize, onlyLongestMatch
);
}
}