+++ /dev/null
-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.io.IOException;
-
-import org.apache.lucene.index.IndexReader;
-import org.apache.lucene.util.LuceneTestCase;
-
-public class TestScoreCachingWrappingScorer extends LuceneTestCase {
-
- private static final class SimpleScorer extends Scorer {
- private int idx = 0;
- private int doc = -1;
-
- public SimpleScorer() {
- super((Similarity)null);
- }
-
- @Override public float score() throws IOException {
- // advance idx on purpose, so that consecutive calls to score will get
- // different results. This is to emulate computation of a score. If
- // ScoreCachingWrappingScorer is used, this should not be called more than
- // once per document.
- return idx == scores.length ? Float.NaN : scores[idx++];
- }
-
- @Override public int docID() { return doc; }
-
- @Override public int nextDoc() throws IOException {
- return ++doc < scores.length ? doc : NO_MORE_DOCS;
- }
-
- @Override public int advance(int target) throws IOException {
- doc = target;
- return doc < scores.length ? doc : NO_MORE_DOCS;
- }
-
- }
-
- private static final class ScoreCachingCollector extends Collector {
-
- private int idx = 0;
- private Scorer scorer;
- float[] mscores;
-
- public ScoreCachingCollector(int numToCollect) {
- mscores = new float[numToCollect];
- }
-
- @Override public void collect(int doc) throws IOException {
- // just a sanity check to avoid IOOB.
- if (idx == mscores.length) {
- return;
- }
-
- // just call score() a couple of times and record the score.
- mscores[idx] = scorer.score();
- mscores[idx] = scorer.score();
- mscores[idx] = scorer.score();
- ++idx;
- }
-
- @Override public void setNextReader(IndexReader reader, int docBase)
- throws IOException {
- }
-
- @Override public void setScorer(Scorer scorer) throws IOException {
- this.scorer = new ScoreCachingWrappingScorer(scorer);
- }
-
- @Override public boolean acceptsDocsOutOfOrder() {
- return true;
- }
-
- }
-
- private static final float[] scores = new float[] { 0.7767749f, 1.7839992f,
- 8.9925785f, 7.9608946f, 0.07948637f, 2.6356435f, 7.4950366f, 7.1490803f,
- 8.108544f, 4.961808f, 2.2423935f, 7.285586f, 4.6699767f };
-
- public void testGetScores() throws Exception {
-
- Scorer s = new SimpleScorer();
- ScoreCachingCollector scc = new ScoreCachingCollector(scores.length);
- scc.setScorer(s);
-
- // We need to iterate on the scorer so that its doc() advances.
- int doc;
- while ((doc = s.nextDoc()) != DocIdSetIterator.NO_MORE_DOCS) {
- scc.collect(doc);
- }
-
- for (int i = 0; i < scores.length; i++) {
- assertEquals(scores[i], scc.mscores[i], 0f);
- }
-
- }
-
-}