| /* |
| * 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.search.spans.SpanBoostQuery; |
| import org.apache.lucene.search.spans.SpanNearQuery; |
| import org.apache.lucene.search.spans.SpanQuery; |
| import org.apache.lucene.queryparser.xml.DOMUtils; |
| import org.apache.lucene.queryparser.xml.ParserException; |
| import org.w3c.dom.Element; |
| import org.w3c.dom.Node; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| /** |
| * Builder for {@link SpanNearQuery} |
| */ |
| public class SpanNearBuilder extends SpanBuilderBase { |
| |
| private final SpanQueryBuilder factory; |
| |
| public SpanNearBuilder(SpanQueryBuilder factory) { |
| this.factory = factory; |
| } |
| |
| @Override |
| public SpanQuery getSpanQuery(Element e) throws ParserException { |
| String slopString = DOMUtils.getAttributeOrFail(e, "slop"); |
| int slop = Integer.parseInt(slopString); |
| boolean inOrder = DOMUtils.getAttribute(e, "inOrder", false); |
| List<SpanQuery> spans = new ArrayList<>(); |
| for (Node kid = e.getFirstChild(); kid != null; kid = kid.getNextSibling()) { |
| if (kid.getNodeType() == Node.ELEMENT_NODE) { |
| spans.add(factory.getSpanQuery((Element) kid)); |
| } |
| } |
| SpanQuery[] spanQueries = spans.toArray(new SpanQuery[spans.size()]); |
| SpanQuery snq = new SpanNearQuery(spanQueries, slop, inOrder); |
| float boost = DOMUtils.getAttribute(e, "boost", 1.0f); |
| return new SpanBoostQuery(snq, boost); |
| } |
| |
| } |