| /* |
| * 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 org.apache.lucene.search.Scorable; |
| import org.apache.lucene.search.ScoreMode; |
| import org.apache.lucene.search.similarities.BM25Similarity; |
| import org.apache.lucene.search.similarities.Similarity; |
| |
| /** |
| * A QueryMatch that reports scores for each match |
| */ |
| public class ScoringMatch extends QueryMatch { |
| |
| public static final MatcherFactory<ScoringMatch> matchWithSimilarity(Similarity similarity) { |
| return searcher -> { |
| searcher.setSimilarity(similarity); |
| return new CollectingMatcher<ScoringMatch>(searcher, ScoreMode.COMPLETE) { |
| @Override |
| protected ScoringMatch doMatch(String queryId, int doc, Scorable scorer) throws IOException { |
| float score = scorer.score(); |
| if (score > 0) |
| return new ScoringMatch(queryId, score); |
| return null; |
| } |
| |
| @Override |
| public ScoringMatch resolve(ScoringMatch match1, ScoringMatch match2) { |
| return new ScoringMatch(match1.getQueryId(), match1.getScore() + match2.getScore()); |
| } |
| }; |
| }; |
| } |
| |
| public static final MatcherFactory<ScoringMatch> DEFAULT_MATCHER = matchWithSimilarity(new BM25Similarity()); |
| |
| private final float score; |
| |
| private ScoringMatch(String queryId, float score) { |
| super(queryId); |
| this.score = score; |
| } |
| |
| public float getScore() { |
| return score; |
| } |
| |
| @Override |
| public boolean equals(Object o) { |
| if (this == o) return true; |
| if (!(o instanceof ScoringMatch)) return false; |
| if (!super.equals(o)) return false; |
| ScoringMatch that = (ScoringMatch) o; |
| return Float.compare(that.score, score) == 0; |
| |
| } |
| |
| @Override |
| public int hashCode() { |
| int result = super.hashCode(); |
| result = 31 * result + (score != +0.0f ? Float.floatToIntBits(score) : 0); |
| return result; |
| } |
| } |