| /* |
| * 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 java.io.IOException; |
| |
| import org.apache.lucene.index.LeafReaderContext; |
| import org.apache.lucene.search.Explanation; |
| import org.apache.lucene.search.FilterWeight; |
| import org.apache.lucene.search.IndexSearcher; |
| import org.apache.lucene.search.Query; |
| import org.apache.lucene.search.Rescorer; |
| import org.apache.lucene.search.Weight; |
| |
| /** |
| * A {@code Weight} used by reranking queries. |
| */ |
| public class ReRankWeight extends FilterWeight { |
| |
| final private IndexSearcher searcher; |
| final private Rescorer reRankQueryRescorer; |
| |
| public ReRankWeight(Query mainQuery, Rescorer reRankQueryRescorer, IndexSearcher searcher, Weight mainWeight) throws IOException { |
| super(mainQuery, mainWeight); |
| this.searcher = searcher; |
| this.reRankQueryRescorer = reRankQueryRescorer; |
| } |
| |
| public Explanation explain(LeafReaderContext context, int doc) throws IOException { |
| final Explanation mainExplain = in.explain(context, doc); |
| return reRankQueryRescorer.explain(searcher, mainExplain, context.docBase+doc); |
| } |
| |
| } |