| package org.apache.lucene.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. |
| */ |
| |
| import org.apache.lucene.util.LuceneTestCase; |
| import org.apache.lucene.analysis.MockAnalyzer; |
| import org.apache.lucene.analysis.MockTokenizer; |
| import org.apache.lucene.document.Document; |
| import org.apache.lucene.document.Field; |
| import org.apache.lucene.index.IndexReader; |
| import org.apache.lucene.index.RandomIndexWriter; |
| import org.apache.lucene.index.Term; |
| import org.apache.lucene.search.IndexSearcher; |
| import org.apache.lucene.search.PhraseQuery; |
| import org.apache.lucene.store.Directory; |
| |
| public class TestSloppyPhraseQuery extends LuceneTestCase { |
| |
| private static final String S_1 = "A A A"; |
| private static final String S_2 = "A 1 2 3 A 4 5 6 A"; |
| |
| private static final Document DOC_1 = makeDocument("X " + S_1 + " Y"); |
| private static final Document DOC_2 = makeDocument("X " + S_2 + " Y"); |
| private static final Document DOC_3 = makeDocument("X " + S_1 + " A Y"); |
| private static final Document DOC_1_B = makeDocument("X " + S_1 + " Y N N N N " + S_1 + " Z"); |
| private static final Document DOC_2_B = makeDocument("X " + S_2 + " Y N N N N " + S_2 + " Z"); |
| private static final Document DOC_3_B = makeDocument("X " + S_1 + " A Y N N N N " + S_1 + " A Y"); |
| private static final Document DOC_4 = makeDocument("A A X A X B A X B B A A X B A A"); |
| private static final Document DOC_5_3 = makeDocument("H H H X X X H H H X X X H H H"); |
| private static final Document DOC_5_4 = makeDocument("H H H H"); |
| |
| private static final PhraseQuery QUERY_1 = makePhraseQuery( S_1 ); |
| private static final PhraseQuery QUERY_2 = makePhraseQuery( S_2 ); |
| private static final PhraseQuery QUERY_4 = makePhraseQuery( "X A A"); |
| private static final PhraseQuery QUERY_5_4 = makePhraseQuery( "H H H H"); |
| |
| /** |
| * Test DOC_4 and QUERY_4. |
| * QUERY_4 has a fuzzy (len=1) match to DOC_4, so all slop values > 0 should succeed. |
| * But only the 3rd sequence of A's in DOC_4 will do. |
| */ |
| public void testDoc4_Query4_All_Slops_Should_match() throws Exception { |
| for (int slop=0; slop<30; slop++) { |
| int numResultsExpected = slop<1 ? 0 : 1; |
| checkPhraseQuery(DOC_4, QUERY_4, slop, numResultsExpected); |
| } |
| } |
| |
| /** |
| * Test DOC_1 and QUERY_1. |
| * QUERY_1 has an exact match to DOC_1, so all slop values should succeed. |
| * Before LUCENE-1310, a slop value of 1 did not succeed. |
| */ |
| public void testDoc1_Query1_All_Slops_Should_match() throws Exception { |
| for (int slop=0; slop<30; slop++) { |
| float score1 = checkPhraseQuery(DOC_1, QUERY_1, slop, 1); |
| float score2 = checkPhraseQuery(DOC_1_B, QUERY_1, slop, 1); |
| assertTrue("slop="+slop+" score2="+score2+" should be greater than score1 "+score1, score2>score1); |
| } |
| } |
| |
| /** |
| * Test DOC_2 and QUERY_1. |
| * 6 should be the minimum slop to make QUERY_1 match DOC_2. |
| * Before LUCENE-1310, 7 was the minimum. |
| */ |
| public void testDoc2_Query1_Slop_6_or_more_Should_match() throws Exception { |
| for (int slop=0; slop<30; slop++) { |
| int numResultsExpected = slop<6 ? 0 : 1; |
| float score1 = checkPhraseQuery(DOC_2, QUERY_1, slop, numResultsExpected); |
| if (numResultsExpected>0) { |
| float score2 = checkPhraseQuery(DOC_2_B, QUERY_1, slop, 1); |
| assertTrue("slop="+slop+" score2="+score2+" should be greater than score1 "+score1, score2>score1); |
| } |
| } |
| } |
| |
| /** |
| * Test DOC_2 and QUERY_2. |
| * QUERY_2 has an exact match to DOC_2, so all slop values should succeed. |
| * Before LUCENE-1310, 0 succeeds, 1 through 7 fail, and 8 or greater succeeds. |
| */ |
| public void testDoc2_Query2_All_Slops_Should_match() throws Exception { |
| for (int slop=0; slop<30; slop++) { |
| float score1 = checkPhraseQuery(DOC_2, QUERY_2, slop, 1); |
| float score2 = checkPhraseQuery(DOC_2_B, QUERY_2, slop, 1); |
| assertTrue("slop="+slop+" score2="+score2+" should be greater than score1 "+score1, score2>score1); |
| } |
| } |
| |
| /** |
| * Test DOC_3 and QUERY_1. |
| * QUERY_1 has an exact match to DOC_3, so all slop values should succeed. |
| */ |
| public void testDoc3_Query1_All_Slops_Should_match() throws Exception { |
| for (int slop=0; slop<30; slop++) { |
| float score1 = checkPhraseQuery(DOC_3, QUERY_1, slop, 1); |
| float score2 = checkPhraseQuery(DOC_3_B, QUERY_1, slop, 1); |
| assertTrue("slop="+slop+" score2="+score2+" should be greater than score1 "+score1, score2>score1); |
| } |
| } |
| |
| /** LUCENE-3412 */ |
| public void testDoc5_Query5_Any_Slop_Should_be_consistent() throws Exception { |
| int nRepeats = 5; |
| for (int slop=0; slop<3; slop++) { |
| for (int trial=0; trial<nRepeats; trial++) { |
| // should steadily always find this one |
| checkPhraseQuery(DOC_5_4, QUERY_5_4, slop, 1); |
| } |
| for (int trial=0; trial<nRepeats; trial++) { |
| // should steadily never find this one |
| checkPhraseQuery(DOC_5_3, QUERY_5_4, slop, 0); |
| } |
| } |
| } |
| |
| private float checkPhraseQuery(Document doc, PhraseQuery query, int slop, int expectedNumResults) throws Exception { |
| query.setSlop(slop); |
| |
| Directory ramDir = newDirectory(); |
| RandomIndexWriter writer = new RandomIndexWriter(random, ramDir, new MockAnalyzer(random, MockTokenizer.WHITESPACE, false)); |
| writer.addDocument(doc); |
| |
| IndexReader reader = writer.getReader(); |
| |
| IndexSearcher searcher = newSearcher(reader); |
| TopDocs td = searcher.search(query,null,10); |
| //System.out.println("slop: "+slop+" query: "+query+" doc: "+doc+" Expecting number of hits: "+expectedNumResults+" maxScore="+td.getMaxScore()); |
| assertEquals("slop: "+slop+" query: "+query+" doc: "+doc+" Wrong number of hits", expectedNumResults, td.totalHits); |
| |
| //QueryUtils.check(query,searcher); |
| writer.close(); |
| searcher.close(); |
| reader.close(); |
| ramDir.close(); |
| |
| return td.getMaxScore(); |
| } |
| |
| private static Document makeDocument(String docText) { |
| Document doc = new Document(); |
| Field f = new Field("f", docText, Field.Store.NO, Field.Index.ANALYZED); |
| f.setOmitNorms(true); |
| doc.add(f); |
| return doc; |
| } |
| |
| private static PhraseQuery makePhraseQuery(String terms) { |
| PhraseQuery query = new PhraseQuery(); |
| String[] t = terms.split(" +"); |
| for (int i=0; i<t.length; i++) { |
| query.add(new Term("f", t[i])); |
| } |
| return query; |
| } |
| |
| } |