| /* |
| * 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.lucene.queryparser.xml.builders; |
| |
| 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.search.spans.SpanBoostQuery; |
| import org.apache.lucene.search.spans.SpanOrQuery; |
| import org.apache.lucene.search.spans.SpanQuery; |
| import org.apache.lucene.search.spans.SpanTermQuery; |
| import org.apache.lucene.util.BytesRef; |
| import org.apache.lucene.queryparser.xml.DOMUtils; |
| import org.apache.lucene.queryparser.xml.ParserException; |
| import org.w3c.dom.Element; |
| |
| import java.io.IOException; |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| /** |
| * 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<SpanQuery> 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(); |
| SpanOrQuery soq = new SpanOrQuery(clausesList.toArray(new SpanQuery[clausesList.size()])); |
| float boost = DOMUtils.getAttribute(e, "boost", 1.0f); |
| return new SpanBoostQuery(soq, boost); |
| } |
| catch (IOException ioe) { |
| throw new ParserException("IOException parsing value:" + value); |
| } |
| } |
| |
| } |