| using Lucene.Net.Documents; |
| using Lucene.Net.Index.Extensions; |
| 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 DefaultSimilarity = Lucene.Net.Search.Similarities.DefaultSimilarity; |
| using Directory = Lucene.Net.Store.Directory; |
| using Document = Documents.Document; |
| using Field = Field; |
| using FieldInvertState = Lucene.Net.Index.FieldInvertState; |
| using IndexReader = Lucene.Net.Index.IndexReader; |
| using LuceneTestCase = Lucene.Net.Util.LuceneTestCase; |
| using MockAnalyzer = Lucene.Net.Analysis.MockAnalyzer; |
| using RandomIndexWriter = Lucene.Net.Index.RandomIndexWriter; |
| using Term = Lucene.Net.Index.Term; |
| |
| /// <summary> |
| /// Similarity unit test. |
| /// |
| /// |
| /// </summary> |
| [TestFixture] |
| public class TestSimilarity : LuceneTestCase |
| { |
| public class SimpleSimilarity : DefaultSimilarity |
| { |
| public override float QueryNorm(float sumOfSquaredWeights) |
| { |
| return 1.0f; |
| } |
| |
| public override float Coord(int overlap, int maxOverlap) |
| { |
| return 1.0f; |
| } |
| |
| public override float LengthNorm(FieldInvertState state) |
| { |
| return state.Boost; |
| } |
| |
| public override float Tf(float freq) |
| { |
| return freq; |
| } |
| |
| public override float SloppyFreq(int distance) |
| { |
| return 2.0f; |
| } |
| |
| public override float Idf(long docFreq, long numDocs) |
| { |
| return 1.0f; |
| } |
| |
| public override Explanation IdfExplain(CollectionStatistics collectionStats, TermStatistics[] stats) |
| { |
| return new Explanation(1.0f, "Inexplicable"); |
| } |
| } |
| |
| [Test] |
| public virtual void TestSimilarity_Mem() |
| { |
| Directory store = NewDirectory(); |
| RandomIndexWriter writer = new RandomIndexWriter(Random, store, NewIndexWriterConfig(TEST_VERSION_CURRENT, new MockAnalyzer(Random)).SetSimilarity(new SimpleSimilarity())); |
| |
| Document d1 = new Document(); |
| d1.Add(NewTextField("field", "a c", Field.Store.YES)); |
| |
| Document d2 = new Document(); |
| d2.Add(NewTextField("field", "a b c", Field.Store.YES)); |
| |
| writer.AddDocument(d1); |
| writer.AddDocument(d2); |
| IndexReader reader = writer.GetReader(); |
| writer.Dispose(); |
| |
| IndexSearcher searcher = NewSearcher(reader); |
| searcher.Similarity = new SimpleSimilarity(); |
| |
| Term a = new Term("field", "a"); |
| Term b = new Term("field", "b"); |
| Term c = new Term("field", "c"); |
| |
| searcher.Search(new TermQuery(b), new CollectorAnonymousClass(this)); |
| |
| BooleanQuery bq = new BooleanQuery(); |
| bq.Add(new TermQuery(a), Occur.SHOULD); |
| bq.Add(new TermQuery(b), Occur.SHOULD); |
| //System.out.println(bq.toString("field")); |
| searcher.Search(bq, new CollectorAnonymousClass2(this)); |
| |
| PhraseQuery pq = new PhraseQuery(); |
| pq.Add(a); |
| pq.Add(c); |
| //System.out.println(pq.toString("field")); |
| searcher.Search(pq, new CollectorAnonymousClass3(this)); |
| |
| pq.Slop = 2; |
| //System.out.println(pq.toString("field")); |
| searcher.Search(pq, new CollectorAnonymousClass4(this)); |
| |
| reader.Dispose(); |
| store.Dispose(); |
| } |
| |
| private class CollectorAnonymousClass : ICollector |
| { |
| private readonly TestSimilarity outerInstance; |
| |
| public CollectorAnonymousClass(TestSimilarity outerInstance) |
| { |
| this.outerInstance = outerInstance; |
| } |
| |
| private Scorer scorer; |
| |
| public virtual void SetScorer(Scorer scorer) |
| { |
| this.scorer = scorer; |
| } |
| |
| public virtual void Collect(int doc) |
| { |
| Assert.AreEqual(1.0f, scorer.GetScore(), 0); |
| } |
| |
| public virtual void SetNextReader(AtomicReaderContext context) |
| { |
| } |
| |
| public virtual bool AcceptsDocsOutOfOrder => true; |
| } |
| |
| private class CollectorAnonymousClass2 : ICollector |
| { |
| private readonly TestSimilarity outerInstance; |
| |
| public CollectorAnonymousClass2(TestSimilarity outerInstance) |
| { |
| this.outerInstance = outerInstance; |
| @base = 0; |
| } |
| |
| private int @base; |
| private Scorer scorer; |
| |
| public virtual void SetScorer(Scorer scorer) |
| { |
| this.scorer = scorer; |
| } |
| |
| public virtual void Collect(int doc) |
| { |
| //System.out.println("Doc=" + doc + " score=" + score); |
| Assert.AreEqual((float)doc + @base + 1, scorer.GetScore(), 0); |
| } |
| |
| public virtual void SetNextReader(AtomicReaderContext context) |
| { |
| @base = context.DocBase; |
| } |
| |
| public virtual bool AcceptsDocsOutOfOrder => true; |
| } |
| |
| private class CollectorAnonymousClass3 : ICollector |
| { |
| private readonly TestSimilarity outerInstance; |
| |
| public CollectorAnonymousClass3(TestSimilarity outerInstance) |
| { |
| this.outerInstance = outerInstance; |
| } |
| |
| private Scorer scorer; |
| |
| public virtual void SetScorer(Scorer scorer) |
| { |
| this.scorer = scorer; |
| } |
| |
| public virtual void Collect(int doc) |
| { |
| //System.out.println("Doc=" + doc + " score=" + score); |
| Assert.AreEqual(1.0f, scorer.GetScore(), 0); |
| } |
| |
| public virtual void SetNextReader(AtomicReaderContext context) |
| { |
| } |
| |
| public virtual bool AcceptsDocsOutOfOrder => true; |
| } |
| |
| private class CollectorAnonymousClass4 : ICollector |
| { |
| private readonly TestSimilarity outerInstance; |
| |
| public CollectorAnonymousClass4(TestSimilarity outerInstance) |
| { |
| this.outerInstance = outerInstance; |
| } |
| |
| private Scorer scorer; |
| |
| public virtual void SetScorer(Scorer scorer) |
| { |
| this.scorer = scorer; |
| } |
| |
| public virtual void Collect(int doc) |
| { |
| //System.out.println("Doc=" + doc + " score=" + score); |
| Assert.AreEqual(2.0f, scorer.GetScore(), 0); |
| } |
| |
| public virtual void SetNextReader(AtomicReaderContext context) |
| { |
| } |
| |
| public virtual bool AcceptsDocsOutOfOrder => true; |
| } |
| } |
| } |