| /* |
| * 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.queryparser.xml.DOMUtils; |
| import org.apache.lucene.queryparser.xml.ParserException; |
| import org.apache.lucene.queryparser.xml.builders.SpanQueryBuilder; |
| import org.apache.lucene.search.BooleanClause; |
| import org.apache.lucene.search.BooleanQuery; |
| import org.apache.lucene.search.Query; |
| import org.apache.lucene.search.spans.SpanOrQuery; |
| import org.apache.lucene.search.spans.SpanQuery; |
| import org.apache.solr.request.SolrQueryRequest; |
| import org.w3c.dom.Element; |
| |
| // A simple test query builder to demonstrate use of |
| // SolrQueryBuilder's queryFactory constructor argument. |
| public class HandyQueryBuilder extends SolrSpanQueryBuilder { |
| |
| public HandyQueryBuilder(String defaultField, Analyzer analyzer, |
| SolrQueryRequest req, SpanQueryBuilder spanFactory) { |
| super(defaultField, analyzer, req, spanFactory); |
| } |
| |
| public Query getQuery(Element e) throws ParserException { |
| final BooleanQuery.Builder bq = new BooleanQuery.Builder(); |
| final Query lhsQ = getSubQuery(e, "Left"); |
| final Query rhsQ = getSubQuery(e, "Right"); |
| bq.add(new BooleanClause(lhsQ, BooleanClause.Occur.SHOULD)); |
| bq.add(new BooleanClause(rhsQ, BooleanClause.Occur.SHOULD)); |
| return bq.build(); |
| } |
| |
| public SpanQuery getSpanQuery(Element e) throws ParserException { |
| SpanQuery subQueries[] = { |
| getSubSpanQuery(e, "Left"), |
| getSubSpanQuery(e, "Right"), |
| }; |
| |
| return new SpanOrQuery(subQueries); |
| } |
| |
| private Query getSubQuery(Element e, String name) throws ParserException { |
| Element subE = DOMUtils.getChildByTagOrFail(e, name); |
| subE = DOMUtils.getFirstChildOrFail(subE); |
| return queryFactory.getQuery(subE); |
| } |
| |
| private SpanQuery getSubSpanQuery(Element e, String name) throws ParserException { |
| Element subE = DOMUtils.getChildByTagOrFail(e, name); |
| subE = DOMUtils.getFirstChildOrFail(subE); |
| return spanFactory.getSpanQuery(subE); |
| } |
| } |