| /* |
| * 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. |
| */ |
| |
| using System; |
| |
| using NUnit.Framework; |
| |
| using IndexReader = Lucene.Net.Index.IndexReader; |
| using LuceneTestCase = Lucene.Net.Util.LuceneTestCase; |
| |
| namespace Lucene.Net.Search |
| { |
| |
| [TestFixture] |
| public class TestScoreCachingWrappingScorer:LuceneTestCase |
| { |
| |
| private sealed class SimpleScorer:Scorer |
| { |
| private int idx = 0; |
| private int doc = - 1; |
| |
| public SimpleScorer():base(null) |
| { |
| } |
| |
| public override float Score() |
| { |
| // 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++]; |
| } |
| |
| public override int DocID() |
| { |
| return doc; |
| } |
| |
| public override int NextDoc() |
| { |
| return ++doc < scores.Length?doc:NO_MORE_DOCS; |
| } |
| |
| public override int Advance(int target) |
| { |
| doc = target; |
| return doc < scores.Length?doc:NO_MORE_DOCS; |
| } |
| } |
| |
| private sealed class ScoreCachingCollector:Collector |
| { |
| |
| private int idx = 0; |
| private Scorer scorer; |
| internal float[] mscores; |
| |
| public ScoreCachingCollector(int numToCollect) |
| { |
| mscores = new float[numToCollect]; |
| } |
| |
| public override void Collect(int doc) |
| { |
| // 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; |
| } |
| |
| public override void SetNextReader(IndexReader reader, int docBase) |
| { |
| } |
| |
| public override void SetScorer(Scorer scorer) |
| { |
| this.scorer = new ScoreCachingWrappingScorer(scorer); |
| } |
| |
| public override bool AcceptsDocsOutOfOrder |
| { |
| get { return true; } |
| } |
| } |
| |
| private static readonly 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}; |
| |
| [Test] |
| public virtual void TestGetScores() |
| { |
| |
| 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++) |
| { |
| Assert.AreEqual(scores[i], scc.mscores[i], 0f); |
| } |
| } |
| } |
| } |