/*
* Copyright 2004-2009 the original author or authors.
*
* 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 org.compass.core.lucene.engine.spellcheck.queryparser;
import java.io.IOException;
import org.apache.lucene.analysis.Analyzer;
import org.apache.lucene.index.Term;
import org.apache.lucene.queryParser.CompassQueryParser;
import org.apache.lucene.queryParser.ParseException;
import org.apache.lucene.search.spell.CompassSpellChecker;
import org.compass.core.engine.SearchEngineFactory;
import org.compass.core.lucene.engine.spellcheck.InternalLuceneSearchEngineSpellCheckManager;
import org.compass.core.mapping.CompassMapping;
/**
* @author kimchy
*/
public class SpellCheckQueryParser extends CompassQueryParser {
private CompassSpellChecker spellChecker;
public SpellCheckQueryParser(String f, Analyzer a, CompassMapping mapping, SearchEngineFactory searchEngineFactory, boolean forceAnalyzer) {
super(f, a, mapping, searchEngineFactory, forceAnalyzer);
InternalLuceneSearchEngineSpellCheckManager spellCheckManager = (InternalLuceneSearchEngineSpellCheckManager) searchEngineFactory.getSpellCheckManager();
this.spellChecker = spellCheckManager.createSpellChecker(null, null);
}
protected Term getTerm(String field, String text) throws ParseException {
try {
if (spellChecker.exist(text)) {
return super.getTerm(field, text);
}
String[] similarWords = spellChecker.suggestSimilar(text, 1);
if (similarWords.length == 0) {
return super.getTerm(field, text);
}
suggestedQuery = true;
return super.getTerm(field, similarWords[0]);
} catch (IOException e) {
throw new ParseException("Failed to spell check suggest " + e.getMessage());
}
}
public void close() {
spellChecker.close();
super.close();
}
}