| package org.apache.lucene.search.spans; |
| |
| /** |
| * 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 java.io.IOException; |
| |
| import org.apache.lucene.util.LuceneTestCase; |
| |
| import org.apache.lucene.analysis.standard.StandardAnalyzer; |
| 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.*; |
| import org.apache.lucene.store.Directory; |
| |
| /******************************************************************************* |
| * Tests the span query bug in Lucene. It demonstrates that SpanTermQuerys don't |
| * work correctly in a BooleanQuery. |
| * |
| */ |
| public class TestSpansAdvanced extends LuceneTestCase { |
| |
| // location to the index |
| protected Directory mDirectory; |
| protected IndexReader reader; |
| protected IndexSearcher searcher; |
| |
| // field names in the index |
| private final static String FIELD_ID = "ID"; |
| protected final static String FIELD_TEXT = "TEXT"; |
| |
| /** |
| * Initializes the tests by adding 4 identical documents to the index. |
| */ |
| @Override |
| public void setUp() throws Exception { |
| super.setUp(); |
| // create test index |
| mDirectory = newDirectory(); |
| final RandomIndexWriter writer = new RandomIndexWriter(random, |
| mDirectory, newIndexWriterConfig(TEST_VERSION_CURRENT, |
| new StandardAnalyzer(TEST_VERSION_CURRENT)).setMergePolicy(newLogMergePolicy())); |
| |
| addDocument(writer, "1", "I think it should work."); |
| addDocument(writer, "2", "I think it should work."); |
| addDocument(writer, "3", "I think it should work."); |
| addDocument(writer, "4", "I think it should work."); |
| reader = writer.getReader(); |
| writer.close(); |
| searcher = newSearcher(reader); |
| } |
| |
| @Override |
| public void tearDown() throws Exception { |
| searcher.close(); |
| reader.close(); |
| mDirectory.close(); |
| mDirectory = null; |
| super.tearDown(); |
| } |
| |
| /** |
| * Adds the document to the index. |
| * |
| * @param writer the Lucene index writer |
| * @param id the unique id of the document |
| * @param text the text of the document |
| * @throws IOException |
| */ |
| protected void addDocument(final RandomIndexWriter writer, final String id, |
| final String text) throws IOException { |
| |
| final Document document = new Document(); |
| document.add(newField(FIELD_ID, id, Field.Store.YES, |
| Field.Index.NOT_ANALYZED)); |
| document.add(newField(FIELD_TEXT, text, Field.Store.YES, |
| Field.Index.ANALYZED)); |
| writer.addDocument(document); |
| } |
| |
| /** |
| * Tests two span queries. |
| * |
| * @throws IOException |
| */ |
| public void testBooleanQueryWithSpanQueries() throws IOException { |
| |
| doTestBooleanQueryWithSpanQueries(searcher, 0.3884282f); |
| } |
| |
| /** |
| * Tests two span queries. |
| * |
| * @throws IOException |
| */ |
| protected void doTestBooleanQueryWithSpanQueries(IndexSearcher s, |
| final float expectedScore) throws IOException { |
| |
| final Query spanQuery = new SpanTermQuery(new Term(FIELD_TEXT, "work")); |
| final BooleanQuery query = new BooleanQuery(); |
| query.add(spanQuery, BooleanClause.Occur.MUST); |
| query.add(spanQuery, BooleanClause.Occur.MUST); |
| final String[] expectedIds = new String[] {"1", "2", "3", "4"}; |
| final float[] expectedScores = new float[] {expectedScore, expectedScore, |
| expectedScore, expectedScore}; |
| assertHits(s, query, "two span queries", expectedIds, expectedScores); |
| } |
| |
| /** |
| * Checks to see if the hits are what we expected. |
| * |
| * @param query the query to execute |
| * @param description the description of the search |
| * @param expectedIds the expected document ids of the hits |
| * @param expectedScores the expected scores of the hits |
| * |
| * @throws IOException |
| */ |
| protected static void assertHits(Searcher s, Query query, |
| final String description, final String[] expectedIds, |
| final float[] expectedScores) throws IOException { |
| QueryUtils.check(random, query, s); |
| |
| final float tolerance = 1e-5f; |
| |
| // Hits hits = searcher.search(query); |
| // hits normalizes and throws things off if one score is greater than 1.0 |
| TopDocs topdocs = s.search(query, null, 10000); |
| |
| /***** |
| * // display the hits System.out.println(hits.length() + |
| * " hits for search: \"" + description + '\"'); for (int i = 0; i < |
| * hits.length(); i++) { System.out.println(" " + FIELD_ID + ':' + |
| * hits.doc(i).get(FIELD_ID) + " (score:" + hits.score(i) + ')'); } |
| *****/ |
| |
| // did we get the hits we expected |
| assertEquals(expectedIds.length, topdocs.totalHits); |
| for (int i = 0; i < topdocs.totalHits; i++) { |
| // System.out.println(i + " exp: " + expectedIds[i]); |
| // System.out.println(i + " field: " + hits.doc(i).get(FIELD_ID)); |
| |
| int id = topdocs.scoreDocs[i].doc; |
| float score = topdocs.scoreDocs[i].score; |
| Document doc = s.doc(id); |
| assertEquals(expectedIds[i], doc.get(FIELD_ID)); |
| boolean scoreEq = Math.abs(expectedScores[i] - score) < tolerance; |
| if (!scoreEq) { |
| System.out.println(i + " warning, expected score: " + expectedScores[i] |
| + ", actual " + score); |
| System.out.println(s.explain(query, id)); |
| } |
| assertEquals(expectedScores[i], score, tolerance); |
| assertEquals(s.explain(query, id).getValue(), score, tolerance); |
| } |
| } |
| |
| } |