| /* |
| * 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.search; |
| |
| import org.apache.lucene.analysis.Analyzer; |
| import org.apache.lucene.index.Term; |
| import org.apache.lucene.queryparser.xml.DOMUtils; |
| import org.apache.lucene.queryparser.xml.ParserException; |
| import org.apache.lucene.queryparser.xml.builders.SpanQueryBuilder; |
| import org.apache.lucene.search.Query; |
| import org.apache.lucene.search.TermQuery; |
| import org.apache.lucene.search.spans.SpanQuery; |
| import org.apache.lucene.search.spans.SpanTermQuery; |
| import org.apache.solr.request.SolrQueryRequest; |
| import org.w3c.dom.Element; |
| import org.w3c.dom.Node; |
| |
| public class ChooseOneWordQueryBuilder extends SolrSpanQueryBuilder { |
| |
| public ChooseOneWordQueryBuilder(String defaultField, Analyzer analyzer, SolrQueryRequest req, |
| SpanQueryBuilder spanFactory) { |
| super(defaultField, analyzer, req, spanFactory); |
| } |
| |
| public Query getQuery(Element e) throws ParserException { |
| return implGetQuery(e, false); |
| } |
| |
| public SpanQuery getSpanQuery(Element e) throws ParserException { |
| return (SpanQuery)implGetQuery(e, true); |
| } |
| |
| public Query implGetQuery(Element e, boolean span) throws ParserException { |
| Term term = null; |
| final String fieldName = DOMUtils.getAttributeWithInheritanceOrFail(e, "fieldName"); |
| for (Node node = e.getFirstChild(); node != null; node = node.getNextSibling()) { |
| if (node.getNodeType() == Node.ELEMENT_NODE && |
| node.getNodeName().equals("Word")) { |
| final String word = DOMUtils.getNonBlankTextOrFail((Element) node); |
| final Term t = new Term(fieldName, word); |
| if (term == null || term.text().length() < t.text().length()) { |
| term = t; |
| } |
| } |
| } |
| return (span ? new SpanTermQuery(term) : new TermQuery(term)); |
| } |
| } |