| package org.apache.lucene.search; |
| |
| /** |
| * 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. |
| */ |
| |
| import java.util.concurrent.ExecutorService; |
| import java.io.IOException; |
| |
| import org.apache.lucene.index.IndexReader; |
| |
| /** |
| * Helper class that adds some extra checks to ensure correct |
| * usage of {@code IndexSearcher} and {@code Weight}. |
| * TODO: Extend this by more checks, that's just a start. |
| */ |
| public class AssertingIndexSearcher extends IndexSearcher { |
| public AssertingIndexSearcher(IndexReader r) { |
| super(r); |
| } |
| |
| public AssertingIndexSearcher(IndexReader r, ExecutorService ex) { |
| super(r, ex); |
| } |
| |
| // not anonymous because else not serializable (compare trunk) |
| private static final class UnmodifiableWeight extends Weight { |
| private final Weight w; |
| |
| UnmodifiableWeight(Weight w) { |
| this.w = w; |
| } |
| |
| @Override |
| public Explanation explain(IndexReader reader, int doc) throws IOException { |
| return w.explain(reader, doc); |
| } |
| |
| @Override |
| public Query getQuery() { |
| return w.getQuery(); |
| } |
| |
| @Override |
| public float getValue() { |
| return w.getValue(); |
| } |
| |
| @Override |
| public void normalize(float norm) { |
| throw new IllegalStateException("Weight already normalized."); |
| } |
| |
| @Override |
| public Scorer scorer(IndexReader reader, boolean scoreDocsInOrder, boolean topScorer) throws IOException { |
| return w.scorer(reader, scoreDocsInOrder, topScorer); |
| } |
| |
| @Override |
| public float sumOfSquaredWeights() throws IOException { |
| throw new IllegalStateException("Weight already normalized."); |
| } |
| |
| @Override |
| public boolean scoresDocsOutOfOrder() { |
| return w.scoresDocsOutOfOrder(); |
| } |
| } |
| |
| /** Ensures, that the returned {@code Weight} is not normalized again, which may produce wrong scores. */ |
| @Override |
| public Weight createNormalizedWeight(Query query) throws IOException { |
| final Weight w = super.createNormalizedWeight(query); |
| return new UnmodifiableWeight(w); |
| } |
| } |