| /* |
| * 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.monitor; |
| |
| import java.io.IOException; |
| import java.util.Map; |
| import java.util.Objects; |
| |
| import org.apache.lucene.search.Explanation; |
| import org.apache.lucene.search.Query; |
| |
| /** |
| * A query match containing the score explanation of the match |
| */ |
| public class ExplainingMatch extends QueryMatch { |
| |
| /** |
| * A MatcherFactory for producing ExplainingMatches |
| */ |
| public static final MatcherFactory<ExplainingMatch> MATCHER = searcher -> new CandidateMatcher<ExplainingMatch>(searcher) { |
| @Override |
| protected void matchQuery(String queryId, Query matchQuery, Map<String, String> metadata) throws IOException { |
| int maxDocs = searcher.getIndexReader().maxDoc(); |
| for (int i = 0; i < maxDocs; i++) { |
| Explanation explanation = searcher.explain(matchQuery, i); |
| if (explanation.isMatch()) |
| addMatch(new ExplainingMatch(queryId, explanation), i); |
| } |
| } |
| |
| @Override |
| public ExplainingMatch resolve(ExplainingMatch match1, ExplainingMatch match2) { |
| return new ExplainingMatch(match1.getQueryId(), |
| Explanation.match(match1.getExplanation().getValue().doubleValue() + match2.getExplanation().getValue().doubleValue(), |
| "sum of:", match1.getExplanation(), match2.getExplanation())); |
| } |
| }; |
| |
| private final Explanation explanation; |
| |
| ExplainingMatch(String queryId, Explanation explanation) { |
| super(queryId); |
| this.explanation = explanation; |
| } |
| |
| /** |
| * @return the Explanation |
| */ |
| public Explanation getExplanation() { |
| return explanation; |
| } |
| |
| @Override |
| public boolean equals(Object o) { |
| if (this == o) return true; |
| if (o == null || getClass() != o.getClass()) return false; |
| if (!super.equals(o)) return false; |
| ExplainingMatch that = (ExplainingMatch) o; |
| return Objects.equals(explanation, that.explanation); |
| } |
| |
| @Override |
| public int hashCode() { |
| return Objects.hash(super.hashCode(), explanation); |
| } |
| } |