| using Lucene.Net.Analysis; |
| using Lucene.Net.Documents; |
| using Lucene.Net.Index; |
| using Lucene.Net.Index.Extensions; |
| using Lucene.Net.Search; |
| using Lucene.Net.Store; |
| using Lucene.Net.Util; |
| using NUnit.Framework; |
| using System.Collections.Generic; |
| using JCG = J2N.Collections.Generic; |
| |
| namespace Lucene.Net.Sandbox.Queries |
| { |
| /* |
| * 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. |
| */ |
| |
| public class FuzzyLikeThisQueryTest : LuceneTestCase |
| { |
| private Directory directory; |
| private IndexSearcher searcher; |
| private IndexReader reader; |
| private Analyzer analyzer; |
| |
| public override void SetUp() |
| { |
| base.SetUp(); |
| |
| analyzer = new MockAnalyzer(Random); |
| directory = NewDirectory(); |
| RandomIndexWriter writer = new RandomIndexWriter(Random, directory, NewIndexWriterConfig(TEST_VERSION_CURRENT, new MockAnalyzer(Random)).SetMergePolicy(NewLogMergePolicy())); |
| |
| //Add series of docs with misspelt names |
| AddDoc(writer, "jonathon smythe", "1"); |
| AddDoc(writer, "jonathan smith", "2"); |
| AddDoc(writer, "johnathon smyth", "3"); |
| AddDoc(writer, "johnny smith", "4"); |
| AddDoc(writer, "jonny smith", "5"); |
| AddDoc(writer, "johnathon smythe", "6"); |
| reader = writer.GetReader(); |
| writer.Dispose(); |
| searcher = NewSearcher(reader); |
| } |
| |
| public override void TearDown() |
| { |
| reader.Dispose(); |
| directory.Dispose(); |
| base.TearDown(); |
| } |
| |
| private void AddDoc(RandomIndexWriter writer, string name, string id) |
| { |
| Document doc = new Document(); |
| doc.Add(NewTextField("name", name, Field.Store.YES)); |
| doc.Add(NewTextField("id", id, Field.Store.YES)); |
| writer.AddDocument(doc); |
| } |
| |
| |
| //Tests that idf ranking is not favouring rare mis-spellings over a strong edit-distance match |
| [Test] |
| public void TestClosestEditDistanceMatchComesFirst() |
| { |
| FuzzyLikeThisQuery flt = new FuzzyLikeThisQuery(10, analyzer); |
| flt.AddTerms("smith", "name", 0.3f, 1); |
| Query q = flt.Rewrite(searcher.IndexReader); |
| ISet<Term> queryTerms = new JCG.HashSet<Term>(); |
| q.ExtractTerms(queryTerms); |
| assertTrue("Should have variant smythe", queryTerms.contains(new Term("name", "smythe"))); |
| assertTrue("Should have variant smith", queryTerms.contains(new Term("name", "smith"))); |
| assertTrue("Should have variant smyth", queryTerms.contains(new Term("name", "smyth"))); |
| TopDocs topDocs = searcher.Search(flt, 1); |
| ScoreDoc[] sd = topDocs.ScoreDocs; |
| assertTrue("score docs must match 1 doc", (sd != null) && (sd.Length > 0)); |
| Document doc = searcher.Doc(sd[0].Doc); |
| assertEquals("Should match most similar not most rare variant", "2", doc.Get("id")); |
| } |
| |
| //Test multiple input words are having variants produced |
| [Test] |
| public void TestMultiWord() |
| { |
| FuzzyLikeThisQuery flt = new FuzzyLikeThisQuery(10, analyzer); |
| flt.AddTerms("jonathin smoth", "name", 0.3f, 1); |
| Query q = flt.Rewrite(searcher.IndexReader); |
| ISet<Term> queryTerms = new JCG.HashSet<Term>(); |
| q.ExtractTerms(queryTerms); |
| assertTrue("Should have variant jonathan", queryTerms.contains(new Term("name", "jonathan"))); |
| assertTrue("Should have variant smith", queryTerms.contains(new Term("name", "smith"))); |
| TopDocs topDocs = searcher.Search(flt, 1); |
| ScoreDoc[] sd = topDocs.ScoreDocs; |
| assertTrue("score docs must match 1 doc", (sd != null) && (sd.Length > 0)); |
| Document doc = searcher.Doc(sd[0].Doc); |
| assertEquals("Should match most similar when using 2 words", "2", doc.Get("id")); |
| } |
| |
| // LUCENE-4809 |
| [Test] |
| public void TestNonExistingField() |
| { |
| FuzzyLikeThisQuery flt = new FuzzyLikeThisQuery(10, analyzer); |
| flt.AddTerms("jonathin smoth", "name", 0.3f, 1); |
| flt.AddTerms("jonathin smoth", "this field does not exist", 0.3f, 1); |
| // don't fail here just because the field doesn't exits |
| Query q = flt.Rewrite(searcher.IndexReader); |
| ISet<Term> queryTerms = new JCG.HashSet<Term>(); |
| q.ExtractTerms(queryTerms); |
| assertTrue("Should have variant jonathan", queryTerms.contains(new Term("name", "jonathan"))); |
| assertTrue("Should have variant smith", queryTerms.contains(new Term("name", "smith"))); |
| TopDocs topDocs = searcher.Search(flt, 1); |
| ScoreDoc[] sd = topDocs.ScoreDocs; |
| assertTrue("score docs must match 1 doc", (sd != null) && (sd.Length > 0)); |
| Document doc = searcher.Doc(sd[0].Doc); |
| assertEquals("Should match most similar when using 2 words", "2", doc.Get("id")); |
| } |
| |
| |
| //Test bug found when first query word does not match anything |
| [Test] |
| public void TestNoMatchFirstWordBug() |
| { |
| FuzzyLikeThisQuery flt = new FuzzyLikeThisQuery(10, analyzer); |
| flt.AddTerms("fernando smith", "name", 0.3f, 1); |
| Query q = flt.Rewrite(searcher.IndexReader); |
| ISet<Term> queryTerms = new JCG.HashSet<Term>(); |
| q.ExtractTerms(queryTerms); |
| assertTrue("Should have variant smith", queryTerms.contains(new Term("name", "smith"))); |
| TopDocs topDocs = searcher.Search(flt, 1); |
| ScoreDoc[] sd = topDocs.ScoreDocs; |
| assertTrue("score docs must match 1 doc", (sd != null) && (sd.Length > 0)); |
| Document doc = searcher.Doc(sd[0].Doc); |
| assertEquals("Should match most similar when using 2 words", "2", doc.Get("id")); |
| } |
| |
| [Test] |
| public void TestFuzzyLikeThisQueryEquals() |
| { |
| Analyzer analyzer = new MockAnalyzer(Random); |
| FuzzyLikeThisQuery fltq1 = new FuzzyLikeThisQuery(10, analyzer); |
| fltq1.AddTerms("javi", "subject", 0.5f, 2); |
| FuzzyLikeThisQuery fltq2 = new FuzzyLikeThisQuery(10, analyzer); |
| fltq2.AddTerms("javi", "subject", 0.5f, 2); |
| assertEquals("FuzzyLikeThisQuery with same attributes is not equal", fltq1, |
| fltq2); |
| } |
| } |
| } |