| /* |
| * 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 java.util.Random; |
| import org.apache.lucene.index.LeafReaderContext; |
| |
| import static org.apache.lucene.util.LuceneTestCase.usually; |
| |
| class AssertingWeight extends FilterWeight { |
| |
| final Random random; |
| final ScoreMode scoreMode; |
| |
| AssertingWeight(Random random, Weight in, ScoreMode scoreMode) { |
| super(in); |
| this.random = random; |
| this.scoreMode = scoreMode; |
| } |
| |
| @Override |
| public Matches matches(LeafReaderContext context, int doc) throws IOException { |
| Matches matches = in.matches(context, doc); |
| if (matches == null) |
| return null; |
| return new AssertingMatches(matches); |
| } |
| |
| @Override |
| public Scorer scorer(LeafReaderContext context) throws IOException { |
| if (random.nextBoolean()) { |
| final Scorer inScorer = in.scorer(context); |
| assert inScorer == null || inScorer.docID() == -1; |
| return AssertingScorer.wrap(new Random(random.nextLong()), inScorer, scoreMode); |
| } else { |
| final ScorerSupplier scorerSupplier = scorerSupplier(context); |
| if (scorerSupplier == null) { |
| return null; |
| } |
| if (random.nextBoolean()) { |
| // Evil: make sure computing the cost has no side effects |
| scorerSupplier.cost(); |
| } |
| return scorerSupplier.get(Long.MAX_VALUE); |
| } |
| } |
| |
| @Override |
| public ScorerSupplier scorerSupplier(LeafReaderContext context) throws IOException { |
| final ScorerSupplier inScorerSupplier = in.scorerSupplier(context); |
| if (inScorerSupplier == null) { |
| return null; |
| } |
| return new ScorerSupplier() { |
| private boolean getCalled = false; |
| @Override |
| public Scorer get(long leadCost) throws IOException { |
| assert getCalled == false; |
| getCalled = true; |
| assert leadCost >= 0 : leadCost; |
| return AssertingScorer.wrap(new Random(random.nextLong()), inScorerSupplier.get(leadCost), scoreMode); |
| } |
| |
| @Override |
| public long cost() { |
| final long cost = inScorerSupplier.cost(); |
| assert cost >= 0; |
| return cost; |
| } |
| }; |
| } |
| |
| @Override |
| public BulkScorer bulkScorer(LeafReaderContext context) throws IOException { |
| BulkScorer inScorer; |
| // We explicitly test both the delegate's bulk scorer, and also the normal scorer. |
| // This ensures that normal scorers are sometimes tested with an asserting wrapper. |
| if (usually(random)) { |
| inScorer = in.bulkScorer(context); |
| } else { |
| inScorer = super.bulkScorer(context); |
| } |
| |
| if (inScorer == null) { |
| return null; |
| } |
| return AssertingBulkScorer.wrap(new Random(random.nextLong()), inScorer, context.reader().maxDoc(), scoreMode); |
| } |
| } |