/*
Copyright 2008 Flaptor (flaptor.com)
Licensed 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 com.flaptor.hounder.searcher.query;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.Reader;
import org.apache.lucene.analysis.Analyzer;
import org.apache.lucene.analysis.TokenStream;
import org.apache.lucene.index.memory.SynonymTokenFilter;
/**
* @author Flaptor Development Team
*/
public class SynonymAnalyzer extends Analyzer {
private Analyzer superTS = null;
private SynonymMap map = null;
public SynonymAnalyzer (Analyzer analyzer, String synonymFileName) {
try {
InputStream is = new FileInputStream(synonymFileName);
map = new SynonymMap(is);
superTS = analyzer;
} catch (IOException e) {
throw new RuntimeException(e);
}
}
public TokenStream tokenStream (String field, Reader reader) {
return new SynonymTokenFilter(superTS.tokenStream(field,reader),map,10); // hardcoded max synonyms
}
}