| using Lucene.Net.Search; |
| using System.Xml; |
| |
| namespace Lucene.Net.QueryParsers.Xml.Builders |
| { |
| /* |
| * 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. |
| */ |
| |
| /// <summary> |
| /// Builder for <see cref="DisjunctionMaxQuery"/> |
| /// </summary> |
| public class DisjunctionMaxQueryBuilder : IQueryBuilder |
| { |
| private readonly IQueryBuilder factory; |
| |
| public DisjunctionMaxQueryBuilder(IQueryBuilder factory) |
| { |
| this.factory = factory; |
| } |
| |
| /// <summary> |
| /// (non-Javadoc) |
| /// @see org.apache.lucene.xmlparser.QueryObjectBuilder#process(org.w3c.dom.Element) |
| /// </summary> |
| public virtual Query GetQuery(XmlElement e) |
| { |
| float tieBreaker = DOMUtils.GetAttribute(e, "tieBreaker", 0.0f); |
| DisjunctionMaxQuery dq = new DisjunctionMaxQuery(tieBreaker); |
| dq.Boost = DOMUtils.GetAttribute(e, "boost", 1.0f); |
| |
| XmlNodeList nl = e.ChildNodes; |
| for (int i = 0; i < nl.Count; i++) |
| { |
| XmlNode node = nl.Item(i); |
| if (node is XmlElement queryElem) |
| { // all elements are disjuncts. |
| Query q = factory.GetQuery(queryElem); |
| dq.Add(q); |
| } |
| } |
| |
| return dq; |
| } |
| } |
| } |