| using Lucene.Net.Documents; |
| 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 Directory = Lucene.Net.Store.Directory; |
| using Document = Documents.Document; |
| using Field = Field; |
| using IndexReader = Lucene.Net.Index.IndexReader; |
| using LuceneTestCase = Lucene.Net.Util.LuceneTestCase; |
| using RandomIndexWriter = Lucene.Net.Index.RandomIndexWriter; |
| using Term = Lucene.Net.Index.Term; |
| |
| /// <summary> |
| /// Tests <seealso cref="PrefixFilter"/> class. |
| /// |
| /// </summary> |
| [TestFixture] |
| public class TestPrefixFilter : LuceneTestCase |
| { |
| [Test] |
| public virtual void TestPrefixFilter_Mem() |
| { |
| Directory directory = NewDirectory(); |
| |
| string[] categories = new string[] { "/Computers/Linux", "/Computers/Mac/One", "/Computers/Mac/Two", "/Computers/Windows" }; |
| RandomIndexWriter writer = new RandomIndexWriter( |
| #if FEATURE_INSTANCE_TESTDATA_INITIALIZATION |
| this, |
| #endif |
| Random, directory); |
| for (int i = 0; i < categories.Length; i++) |
| { |
| Document doc = new Document(); |
| doc.Add(NewStringField("category", categories[i], Field.Store.YES)); |
| writer.AddDocument(doc); |
| } |
| IndexReader reader = writer.GetReader(); |
| |
| // PrefixFilter combined with ConstantScoreQuery |
| PrefixFilter filter = new PrefixFilter(new Term("category", "/Computers")); |
| Query query = new ConstantScoreQuery(filter); |
| IndexSearcher searcher = NewSearcher(reader); |
| ScoreDoc[] hits = searcher.Search(query, null, 1000).ScoreDocs; |
| Assert.AreEqual(4, hits.Length); |
| |
| // test middle of values |
| filter = new PrefixFilter(new Term("category", "/Computers/Mac")); |
| query = new ConstantScoreQuery(filter); |
| hits = searcher.Search(query, null, 1000).ScoreDocs; |
| Assert.AreEqual(2, hits.Length); |
| |
| // test start of values |
| filter = new PrefixFilter(new Term("category", "/Computers/Linux")); |
| query = new ConstantScoreQuery(filter); |
| hits = searcher.Search(query, null, 1000).ScoreDocs; |
| Assert.AreEqual(1, hits.Length); |
| |
| // test end of values |
| filter = new PrefixFilter(new Term("category", "/Computers/Windows")); |
| query = new ConstantScoreQuery(filter); |
| hits = searcher.Search(query, null, 1000).ScoreDocs; |
| Assert.AreEqual(1, hits.Length); |
| |
| // test non-existant |
| filter = new PrefixFilter(new Term("category", "/Computers/ObsoleteOS")); |
| query = new ConstantScoreQuery(filter); |
| hits = searcher.Search(query, null, 1000).ScoreDocs; |
| Assert.AreEqual(0, hits.Length); |
| |
| // test non-existant, before values |
| filter = new PrefixFilter(new Term("category", "/Computers/AAA")); |
| query = new ConstantScoreQuery(filter); |
| hits = searcher.Search(query, null, 1000).ScoreDocs; |
| Assert.AreEqual(0, hits.Length); |
| |
| // test non-existant, after values |
| filter = new PrefixFilter(new Term("category", "/Computers/ZZZ")); |
| query = new ConstantScoreQuery(filter); |
| hits = searcher.Search(query, null, 1000).ScoreDocs; |
| Assert.AreEqual(0, hits.Length); |
| |
| // test zero length prefix |
| filter = new PrefixFilter(new Term("category", "")); |
| query = new ConstantScoreQuery(filter); |
| hits = searcher.Search(query, null, 1000).ScoreDocs; |
| Assert.AreEqual(4, hits.Length); |
| |
| // test non existent field |
| filter = new PrefixFilter(new Term("nonexistantfield", "/Computers")); |
| query = new ConstantScoreQuery(filter); |
| hits = searcher.Search(query, null, 1000).ScoreDocs; |
| Assert.AreEqual(0, hits.Length); |
| |
| writer.Dispose(); |
| reader.Dispose(); |
| directory.Dispose(); |
| } |
| } |
| } |