| using J2N.Collections.Generic.Extensions; |
| using Lucene.Net.Documents; |
| using Lucene.Net.Index.Extensions; |
| using Lucene.Net.Support; |
| using NUnit.Framework; |
| using System; |
| using System.Collections.Generic; |
| using Assert = Lucene.Net.TestFramework.Assert; |
| |
| namespace Lucene.Net.Index |
| { |
| /* |
| * 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 BytesRef = Lucene.Net.Util.BytesRef; |
| using Directory = Lucene.Net.Store.Directory; |
| using Document = Documents.Document; |
| using Field = Field; |
| using LuceneTestCase = Lucene.Net.Util.LuceneTestCase; |
| using MockAnalyzer = Lucene.Net.Analysis.MockAnalyzer; |
| using MockTokenizer = Lucene.Net.Analysis.MockTokenizer; |
| using TestUtil = Lucene.Net.Util.TestUtil; |
| using TFIDFSimilarity = Lucene.Net.Search.Similarities.TFIDFSimilarity; |
| |
| /// <summary> |
| /// Tests the maxTermFrequency statistic in FieldInvertState |
| /// </summary> |
| [TestFixture] |
| public class TestMaxTermFrequency : LuceneTestCase |
| { |
| private Directory dir; |
| private IndexReader reader; |
| /* expected maxTermFrequency values for our documents */ |
| private readonly List<int?> expected = new List<int?>(); |
| |
| [SetUp] |
| public override void SetUp() |
| { |
| base.SetUp(); |
| dir = NewDirectory(); |
| IndexWriterConfig config = NewIndexWriterConfig(TEST_VERSION_CURRENT, new MockAnalyzer(Random, MockTokenizer.SIMPLE, true)).SetMergePolicy(NewLogMergePolicy()); |
| config.SetSimilarity(new TestSimilarity(this)); |
| RandomIndexWriter writer = new RandomIndexWriter(Random, dir, config); |
| Document doc = new Document(); |
| Field foo = NewTextField("foo", "", Field.Store.NO); |
| doc.Add(foo); |
| for (int i = 0; i < 100; i++) |
| { |
| foo.SetStringValue(AddValue()); |
| writer.AddDocument(doc); |
| } |
| reader = writer.GetReader(); |
| writer.Dispose(); |
| } |
| |
| [TearDown] |
| public override void TearDown() |
| { |
| reader.Dispose(); |
| dir.Dispose(); |
| base.TearDown(); |
| } |
| |
| [Test] |
| public virtual void Test() |
| { |
| NumericDocValues fooNorms = MultiDocValues.GetNormValues(reader, "foo"); |
| for (int i = 0; i < reader.MaxDoc; i++) |
| { |
| Assert.AreEqual((int)expected[i], fooNorms.Get(i) & 0xff); |
| } |
| } |
| |
| /// <summary> |
| /// Makes a bunch of single-char tokens (the max freq will at most be 255). |
| /// shuffles them around, and returns the whole list with Arrays.toString(). |
| /// this works fine because we use lettertokenizer. |
| /// puts the max-frequency term into expected, to be checked against the norm. |
| /// </summary> |
| private string AddValue() |
| { |
| IList<string> terms = new List<string>(); |
| int maxCeiling = TestUtil.NextInt32(Random, 0, 255); |
| int max = 0; |
| for (char ch = 'a'; ch <= 'z'; ch++) |
| { |
| int num = TestUtil.NextInt32(Random, 0, maxCeiling); |
| for (int i = 0; i < num; i++) |
| { |
| terms.Add(char.ToString(ch)); |
| } |
| max = Math.Max(max, num); |
| } |
| expected.Add(max); |
| |
| terms.Shuffle(Random); |
| return Collections.ToString(terms); |
| } |
| |
| /// <summary> |
| /// Simple similarity that encodes maxTermFrequency directly as a byte |
| /// </summary> |
| internal class TestSimilarity : TFIDFSimilarity |
| { |
| private readonly TestMaxTermFrequency outerInstance; |
| |
| public TestSimilarity(TestMaxTermFrequency outerInstance) |
| { |
| this.outerInstance = outerInstance; |
| } |
| |
| public override float LengthNorm(FieldInvertState state) |
| { |
| return state.MaxTermFrequency; |
| } |
| |
| public override long EncodeNormValue(float f) |
| { |
| return (sbyte)f; |
| } |
| |
| public override float DecodeNormValue(long norm) |
| { |
| return norm; |
| } |
| |
| public override float Coord(int overlap, int maxOverlap) |
| { |
| return 0; |
| } |
| |
| public override float QueryNorm(float sumOfSquaredWeights) |
| { |
| return 0; |
| } |
| |
| public override float Tf(float freq) |
| { |
| return 0; |
| } |
| |
| public override float Idf(long docFreq, long numDocs) |
| { |
| return 0; |
| } |
| |
| public override float SloppyFreq(int distance) |
| { |
| return 0; |
| } |
| |
| public override float ScorePayload(int doc, int start, int end, BytesRef payload) |
| { |
| return 0; |
| } |
| } |
| } |
| } |