1 package org.apache.lucene.facet.search.aggregator;
4 * Licensed to the Apache Software Foundation (ASF) under one or more
5 * contributor license agreements. See the NOTICE file distributed with
6 * this work for additional information regarding copyright ownership.
7 * The ASF licenses this file to You under the Apache License, Version 2.0
8 * (the "License"); you may not use this file except in compliance with
9 * the License. You may obtain a copy of the License at
11 * http://www.apache.org/licenses/LICENSE-2.0
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
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21 * An {@link Aggregator} which updates the weight of a category according to the
22 * scores of the documents it was found in.
24 * @lucene.experimental
26 public class ScoringAggregator implements Aggregator {
28 private final float[] scoreArray;
30 private final int hashCode;
32 public ScoringAggregator(float[] counterArray) {
33 this.scoreArray = counterArray;
34 this.hashCode = scoreArray == null ? 0 : scoreArray.hashCode();
37 public void aggregate(int ordinal) {
38 scoreArray[ordinal] += score;
42 public boolean equals(Object obj) {
43 if (obj == null || obj.getClass() != this.getClass()) {
46 ScoringAggregator that = (ScoringAggregator) obj;
47 return that.scoreArray == this.scoreArray;
51 public int hashCode() {
55 public void setNextDoc(int docid, float score) {