| using Lucene.Net.Documents; |
| using NUnit.Framework; |
| using System; |
| using System.Collections.Generic; |
| using System.Text; |
| 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 DirectoryReader = Lucene.Net.Index.DirectoryReader; |
| using Document = Documents.Document; |
| using Field = Field; |
| using IndexReader = Lucene.Net.Index.IndexReader; |
| using LuceneTestCase = Lucene.Net.Util.LuceneTestCase; |
| using NumericDocValuesField = NumericDocValuesField; |
| using RandomIndexWriter = Lucene.Net.Index.RandomIndexWriter; |
| using Term = Lucene.Net.Index.Term; |
| using TestUtil = Lucene.Net.Util.TestUtil; |
| |
| [SuppressCodecs("Lucene3x")] |
| [TestFixture] |
| public class TestSortRescorer : LuceneTestCase |
| { |
| internal IndexSearcher searcher; |
| internal DirectoryReader reader; |
| internal Directory dir; |
| |
| [SetUp] |
| public override void SetUp() |
| { |
| base.SetUp(); |
| dir = NewDirectory(); |
| RandomIndexWriter iw = new RandomIndexWriter( |
| #if FEATURE_INSTANCE_TESTDATA_INITIALIZATION |
| this, |
| #endif |
| Random, dir); |
| |
| Document doc = new Document(); |
| doc.Add(NewStringField("id", "1", Field.Store.YES)); |
| doc.Add(NewTextField("body", "some contents and more contents", Field.Store.NO)); |
| doc.Add(new NumericDocValuesField("popularity", 5)); |
| iw.AddDocument(doc); |
| |
| doc = new Document(); |
| doc.Add(NewStringField("id", "2", Field.Store.YES)); |
| doc.Add(NewTextField("body", "another document with different contents", Field.Store.NO)); |
| doc.Add(new NumericDocValuesField("popularity", 20)); |
| iw.AddDocument(doc); |
| |
| doc = new Document(); |
| doc.Add(NewStringField("id", "3", Field.Store.YES)); |
| doc.Add(NewTextField("body", "crappy contents", Field.Store.NO)); |
| doc.Add(new NumericDocValuesField("popularity", 2)); |
| iw.AddDocument(doc); |
| |
| reader = iw.GetReader(); |
| searcher = new IndexSearcher(reader); |
| iw.Dispose(); |
| } |
| |
| [TearDown] |
| public override void TearDown() |
| { |
| reader.Dispose(); |
| dir.Dispose(); |
| base.TearDown(); |
| } |
| |
| [Test] |
| public virtual void TestBasic() |
| { |
| // create a sort field and sort by it (reverse order) |
| Query query = new TermQuery(new Term("body", "contents")); |
| IndexReader r = searcher.IndexReader; |
| |
| // Just first pass query |
| TopDocs hits = searcher.Search(query, 10); |
| Assert.AreEqual(3, hits.TotalHits); |
| Assert.AreEqual("3", r.Document(hits.ScoreDocs[0].Doc).Get("id")); |
| Assert.AreEqual("1", r.Document(hits.ScoreDocs[1].Doc).Get("id")); |
| Assert.AreEqual("2", r.Document(hits.ScoreDocs[2].Doc).Get("id")); |
| |
| // Now, rescore: |
| Sort sort = new Sort(new SortField("popularity", SortFieldType.INT32, true)); |
| Rescorer rescorer = new SortRescorer(sort); |
| hits = rescorer.Rescore(searcher, hits, 10); |
| Assert.AreEqual(3, hits.TotalHits); |
| Assert.AreEqual("2", r.Document(hits.ScoreDocs[0].Doc).Get("id")); |
| Assert.AreEqual("1", r.Document(hits.ScoreDocs[1].Doc).Get("id")); |
| Assert.AreEqual("3", r.Document(hits.ScoreDocs[2].Doc).Get("id")); |
| |
| string expl = rescorer.Explain(searcher, searcher.Explain(query, hits.ScoreDocs[0].Doc), hits.ScoreDocs[0].Doc).ToString(); |
| |
| // Confirm the explanation breaks out the individual |
| // sort fields: |
| Assert.IsTrue(expl.Contains("= sort field <int: \"popularity\">! value=20")); |
| |
| // Confirm the explanation includes first pass details: |
| Assert.IsTrue(expl.Contains("= first pass score")); |
| Assert.IsTrue(expl.Contains("body:contents in")); |
| } |
| |
| [Test] |
| public virtual void TestRandom() |
| { |
| Directory dir = NewDirectory(); |
| int numDocs = AtLeast(1000); |
| RandomIndexWriter w = new RandomIndexWriter( |
| #if FEATURE_INSTANCE_TESTDATA_INITIALIZATION |
| this, |
| #endif |
| Random, dir); |
| |
| int[] idToNum = new int[numDocs]; |
| int maxValue = TestUtil.NextInt32(Random, 10, 1000000); |
| for (int i = 0; i < numDocs; i++) |
| { |
| Document doc = new Document(); |
| doc.Add(NewStringField("id", "" + i, Field.Store.YES)); |
| int numTokens = TestUtil.NextInt32(Random, 1, 10); |
| StringBuilder b = new StringBuilder(); |
| for (int j = 0; j < numTokens; j++) |
| { |
| b.Append("a "); |
| } |
| doc.Add(NewTextField("field", b.ToString(), Field.Store.NO)); |
| idToNum[i] = Random.Next(maxValue); |
| doc.Add(new NumericDocValuesField("num", idToNum[i])); |
| w.AddDocument(doc); |
| } |
| IndexReader r = w.GetReader(); |
| w.Dispose(); |
| |
| IndexSearcher s = NewSearcher(r); |
| int numHits = TestUtil.NextInt32(Random, 1, numDocs); |
| bool reverse = Random.NextBoolean(); |
| |
| TopDocs hits = s.Search(new TermQuery(new Term("field", "a")), numHits); |
| |
| Rescorer rescorer = new SortRescorer(new Sort(new SortField("num", SortFieldType.INT32, reverse))); |
| TopDocs hits2 = rescorer.Rescore(s, hits, numHits); |
| |
| int[] expected = new int[numHits]; |
| for (int i = 0; i < numHits; i++) |
| { |
| expected[i] = hits.ScoreDocs[i].Doc; |
| } |
| |
| int reverseInt = reverse ? -1 : 1; |
| |
| Array.Sort(expected, Comparer<int>.Create((a, b) => |
| { |
| int av = idToNum[Convert.ToInt32(r.Document(a).Get("id"))]; |
| int bv = idToNum[Convert.ToInt32(r.Document(b).Get("id"))]; |
| if (av < bv) |
| { |
| return -reverseInt; |
| } |
| else if (bv < av) |
| { |
| return reverseInt; |
| } |
| else |
| { |
| // Tie break by docID, ascending |
| return a - b; |
| } |
| })); |
| |
| bool fail = false; |
| for (int i = 0; i < numHits; i++) |
| { |
| fail |= (int)expected[i] != hits2.ScoreDocs[i].Doc; |
| } |
| Assert.IsFalse(fail); |
| |
| r.Dispose(); |
| dir.Dispose(); |
| } |
| } |
| } |