| using NUnit.Framework; |
| using Assert = Lucene.Net.TestFramework.Assert; |
| |
| namespace Lucene.Net.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. |
| */ |
| |
| using AtomicReaderContext = Lucene.Net.Index.AtomicReaderContext; |
| using Directory = Lucene.Net.Store.Directory; |
| using IndexReader = Lucene.Net.Index.IndexReader; |
| using LuceneTestCase = Lucene.Net.Util.LuceneTestCase; |
| using RandomIndexWriter = Lucene.Net.Index.RandomIndexWriter; |
| using Term = Lucene.Net.Index.Term; |
| |
| [TestFixture] |
| public class TestScoreCachingWrappingScorer : LuceneTestCase |
| { |
| private sealed class SimpleScorer : Scorer |
| { |
| private int idx = 0; |
| private int doc = -1; |
| |
| public SimpleScorer(Weight weight) |
| : base(weight) |
| { |
| } |
| |
| public override float GetScore() |
| { |
| // 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 Freq => 1; |
| |
| public override int DocID => 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; |
| } |
| |
| public override long GetCost() |
| { |
| return scores.Length; |
| } |
| } |
| |
| private sealed class ScoreCachingCollector : ICollector |
| { |
| private int idx = 0; |
| private Scorer scorer; |
| public readonly float[] mscores; |
| |
| public ScoreCachingCollector(int numToCollect) |
| { |
| mscores = new float[numToCollect]; |
| } |
| |
| public 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.GetScore(); |
| mscores[idx] = scorer.GetScore(); |
| mscores[idx] = scorer.GetScore(); |
| ++idx; |
| } |
| |
| public void SetNextReader(AtomicReaderContext context) |
| { |
| } |
| |
| public void SetScorer(Scorer scorer) |
| { |
| this.scorer = new ScoreCachingWrappingScorer(scorer); |
| } |
| |
| public bool AcceptsDocsOutOfOrder => 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() |
| { |
| Directory directory = NewDirectory(); |
| RandomIndexWriter writer = new RandomIndexWriter( |
| #if FEATURE_INSTANCE_TESTDATA_INITIALIZATION |
| this, |
| #endif |
| Random, directory); |
| writer.Commit(); |
| IndexReader ir = writer.GetReader(); |
| writer.Dispose(); |
| IndexSearcher searcher = NewSearcher(ir); |
| Weight fake = (new TermQuery(new Term("fake", "weight"))).CreateWeight(searcher); |
| Scorer s = new SimpleScorer(fake); |
| 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); |
| } |
| ir.Dispose(); |
| directory.Dispose(); |
| } |
| } |
| } |