| /* |
| * 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.search; |
| |
| |
| import java.io.IOException; |
| |
| import org.apache.lucene.util.LuceneTestCase; |
| |
| public class TestCachingCollector extends LuceneTestCase { |
| |
| private static final double ONE_BYTE = 1.0 / (1024 * 1024); // 1 byte out of MB |
| |
| private static class MockScorable extends Scorable { |
| |
| @Override |
| public float score() { return 0; } |
| |
| @Override |
| public int docID() { return 0; } |
| |
| } |
| |
| private static class NoOpCollector extends SimpleCollector { |
| |
| @Override |
| public void collect(int doc) throws IOException {} |
| |
| @Override |
| public ScoreMode scoreMode() { |
| return ScoreMode.COMPLETE_NO_SCORES; |
| } |
| |
| } |
| |
| public void testBasic() throws Exception { |
| for (boolean cacheScores : new boolean[] { false, true }) { |
| CachingCollector cc = CachingCollector.create(new NoOpCollector(), cacheScores, 1.0); |
| LeafCollector acc = cc.getLeafCollector(null); |
| acc.setScorer(new MockScorable()); |
| |
| // collect 1000 docs |
| for (int i = 0; i < 1000; i++) { |
| acc.collect(i); |
| } |
| |
| // now replay them |
| cc.replay(new SimpleCollector() { |
| int prevDocID = -1; |
| |
| @Override |
| public void collect(int doc) { |
| assertEquals(prevDocID + 1, doc); |
| prevDocID = doc; |
| } |
| |
| @Override |
| public ScoreMode scoreMode() { |
| return ScoreMode.COMPLETE_NO_SCORES; |
| } |
| }); |
| } |
| } |
| |
| public void testIllegalStateOnReplay() throws Exception { |
| CachingCollector cc = CachingCollector.create(new NoOpCollector(), true, 50 * ONE_BYTE); |
| LeafCollector acc = cc.getLeafCollector(null); |
| acc.setScorer(new MockScorable()); |
| |
| // collect 130 docs, this should be enough for triggering cache abort. |
| for (int i = 0; i < 130; i++) { |
| acc.collect(i); |
| } |
| |
| assertFalse("CachingCollector should not be cached due to low memory limit", cc.isCached()); |
| |
| expectThrows(IllegalStateException.class, () -> { |
| cc.replay(new NoOpCollector()); |
| }); |
| } |
| |
| public void testCachedArraysAllocation() throws Exception { |
| // tests the cached arrays allocation -- if the 'nextLength' was too high, |
| // caching would terminate even if a smaller length would suffice. |
| |
| // set RAM limit enough for 150 docs + random(10000) |
| int numDocs = random().nextInt(10000) + 150; |
| for (boolean cacheScores : new boolean[] { false, true }) { |
| int bytesPerDoc = cacheScores ? 8 : 4; |
| CachingCollector cc = CachingCollector.create(new NoOpCollector(), |
| cacheScores, bytesPerDoc * ONE_BYTE * numDocs); |
| LeafCollector acc = cc.getLeafCollector(null); |
| acc.setScorer(new MockScorable()); |
| for (int i = 0; i < numDocs; i++) acc.collect(i); |
| assertTrue(cc.isCached()); |
| |
| // The 151's document should terminate caching |
| acc.collect(numDocs); |
| assertFalse(cc.isCached()); |
| } |
| } |
| |
| public void testNoWrappedCollector() throws Exception { |
| for (boolean cacheScores : new boolean[] { false, true }) { |
| // create w/ null wrapped collector, and test that the methods work |
| CachingCollector cc = CachingCollector.create(cacheScores, 50 * ONE_BYTE); |
| LeafCollector acc = cc.getLeafCollector(null); |
| acc.setScorer(new MockScorable()); |
| acc.collect(0); |
| |
| assertTrue(cc.isCached()); |
| cc.replay(new NoOpCollector()); |
| } |
| } |
| |
| } |