/* * Licensed to ElasticSearch and Shay Banon under one * or more contributor license agreements. See the NOTICE file * distributed with this work for additional information * regarding copyright ownership. ElasticSearch 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.elasticsearch.common.lucene; import org.apache.lucene.index.IndexReader; import org.apache.lucene.search.Collector; import org.apache.lucene.search.ScoreCachingWrappingScorer; import org.apache.lucene.search.Scorer; import java.io.IOException; /** * */ public class MultiCollector extends Collector { private final Collector collector; private final Collector[] collectors; public MultiCollector(Collector collector, Collector[] collectors) { this.collector = collector; this.collectors = collectors; } @Override public void setScorer(Scorer scorer) throws IOException { // always wrap it in a scorer wrapper if (!(scorer instanceof ScoreCachingWrappingScorer)) { scorer = new ScoreCachingWrappingScorer(scorer); } collector.setScorer(scorer); for (Collector collector : collectors) { collector.setScorer(scorer); } } @Override public void collect(int doc) throws IOException { collector.collect(doc); for (Collector collector : collectors) { collector.collect(doc); } } @Override public void setNextReader(IndexReader reader, int docBase) throws IOException { collector.setNextReader(reader, docBase); for (Collector collector : collectors) { collector.setNextReader(reader, docBase); } } @Override public boolean acceptsDocsOutOfOrder() { if (!collector.acceptsDocsOutOfOrder()) { return false; } for (Collector collector : collectors) { if (!collector.acceptsDocsOutOfOrder()) { return false; } } return true; } }