org.apache.lucene.queryparser.xml.builders.SpanOrTermsBuilder Maven / Gradle / Ivy
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* 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
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* Unless required by applicable law or agreed to in writing, software
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package org.apache.lucene.queryparser.xml.builders;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import org.apache.lucene.analysis.Analyzer;
import org.apache.lucene.analysis.TokenStream;
import org.apache.lucene.analysis.tokenattributes.TermToBytesRefAttribute;
import org.apache.lucene.index.Term;
import org.apache.lucene.queries.spans.SpanOrQuery;
import org.apache.lucene.queries.spans.SpanQuery;
import org.apache.lucene.queries.spans.SpanTermQuery;
import org.apache.lucene.queryparser.xml.DOMUtils;
import org.apache.lucene.queryparser.xml.ParserException;
import org.apache.lucene.util.BytesRef;
import org.w3c.dom.Element;
/** Builder that analyzes the text into a {@link SpanOrQuery} */
public class SpanOrTermsBuilder extends SpanBuilderBase {
private final Analyzer analyzer;
public SpanOrTermsBuilder(Analyzer analyzer) {
this.analyzer = analyzer;
}
@Override
public SpanQuery getSpanQuery(Element e) throws ParserException {
String fieldName = DOMUtils.getAttributeWithInheritanceOrFail(e, "fieldName");
String value = DOMUtils.getNonBlankTextOrFail(e);
List clausesList = new ArrayList<>();
try (TokenStream ts = analyzer.tokenStream(fieldName, value)) {
TermToBytesRefAttribute termAtt = ts.addAttribute(TermToBytesRefAttribute.class);
ts.reset();
while (ts.incrementToken()) {
SpanTermQuery stq =
new SpanTermQuery(new Term(fieldName, BytesRef.deepCopyOf(termAtt.getBytesRef())));
clausesList.add(stq);
}
ts.end();
return new SpanOrQuery(clausesList.toArray(new SpanQuery[clausesList.size()]));
} catch (IOException ioe) {
throw new ParserException("IOException parsing value:" + value, ioe);
}
}
}