| /* |
| * 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.sandbox.search; |
| |
| import java.io.IOException; |
| import org.apache.lucene.index.LeafReaderContext; |
| import org.apache.lucene.search.Collector; |
| import org.apache.lucene.search.FilterCollector; |
| import org.apache.lucene.search.FilterLeafCollector; |
| import org.apache.lucene.search.LeafCollector; |
| import org.apache.lucene.search.Scorable; |
| import org.apache.lucene.search.ScoreMode; |
| |
| /** A collector that profiles how much time is spent calling it. */ |
| class ProfilerCollectorWrapper extends FilterCollector { |
| |
| private long time; |
| |
| /** Sole constructor. */ |
| ProfilerCollectorWrapper(Collector in) { |
| super(in); |
| } |
| |
| @Override |
| public ScoreMode scoreMode() { |
| final long start = System.nanoTime(); |
| try { |
| return super.scoreMode(); |
| } finally { |
| time += Math.max(1, System.nanoTime() - start); |
| } |
| } |
| |
| @Override |
| public LeafCollector getLeafCollector(LeafReaderContext context) throws IOException { |
| final long start = System.nanoTime(); |
| final LeafCollector inLeafCollector; |
| try { |
| inLeafCollector = super.getLeafCollector(context); |
| } finally { |
| time += Math.max(1, System.nanoTime() - start); |
| } |
| return new FilterLeafCollector(inLeafCollector) { |
| |
| @Override |
| public void collect(int doc) throws IOException { |
| final long start = System.nanoTime(); |
| try { |
| super.collect(doc); |
| } finally { |
| time += Math.max(1, System.nanoTime() - start); |
| } |
| } |
| |
| @Override |
| public void setScorer(Scorable scorer) throws IOException { |
| final long start = System.nanoTime(); |
| try { |
| super.setScorer(scorer); |
| } finally { |
| time += Math.max(1, System.nanoTime() - start); |
| } |
| } |
| }; |
| } |
| |
| /** Return the total time spent on this collector. */ |
| public long getTime() { |
| return time; |
| } |
| } |