| /* |
| * 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; |
| |
| /** |
| * Wraps another Scorable and asserts that scores are reasonable |
| * and only called when positioned |
| */ |
| public class AssertingScorable extends FilterScorable { |
| |
| public AssertingScorable(Scorable in) { |
| super(in); |
| } |
| |
| @Override |
| public float score() throws IOException { |
| int docId = docID(); |
| assert docId != -1 && docId != DocIdSetIterator.NO_MORE_DOCS : "score() called on unpositioned Scorable docid=" + docID(); |
| final float score = in.score(); |
| assert !Float.isNaN(score) : "NaN score for in="+in; |
| return score; |
| } |
| |
| @Override |
| public void setMinCompetitiveScore(float minScore) throws IOException { |
| in.setMinCompetitiveScore(minScore); |
| } |
| |
| public static Scorable wrap(Scorable in) { |
| if (in instanceof AssertingScorable) { |
| return in; |
| } |
| // If `in` is Scorer, we need to wrap it as a Scorer instead of Scorable because |
| // NumericComparator uses the iterator cost of a Scorer in sort optimization. |
| if (in instanceof Scorer) { |
| return new WrappedScorer((Scorer) in); |
| } else { |
| return new AssertingScorable(in); |
| } |
| } |
| |
| private static class WrappedScorer extends FilterScorer { |
| WrappedScorer(Scorer in) { |
| super(in); |
| } |
| |
| @Override |
| public float score() throws IOException { |
| return new AssertingScorable(in).score(); |
| } |
| |
| @Override |
| public void setMinCompetitiveScore(float minScore) throws IOException { |
| in.setMinCompetitiveScore(minScore); |
| } |
| |
| @Override |
| public float getMaxScore(int upTo) throws IOException { |
| return in.getMaxScore(upTo); |
| } |
| } |
| |
| public static Scorable unwrap(Scorable in) { |
| while (true) { |
| if (in instanceof AssertingScorable) in = ((AssertingScorable) in).in; |
| else if (in instanceof AssertingScorer) in = ((AssertingScorer) in).in; |
| else if (in instanceof WrappedScorer) in = ((WrappedScorer) in).in; |
| else return in; |
| } |
| } |
| } |