| /* |
| * 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. |
| */ |
| package org.apache.lucene.search.spans; |
| |
| |
| import java.io.IOException; |
| import java.util.HashSet; |
| import java.util.Set; |
| |
| import org.apache.lucene.analysis.MockAnalyzer; |
| import org.apache.lucene.document.Document; |
| import org.apache.lucene.document.FieldType; |
| import org.apache.lucene.document.TextField; |
| import org.apache.lucene.index.IndexOptions; |
| import org.apache.lucene.index.IndexReader; |
| import org.apache.lucene.index.PostingsEnum; |
| import org.apache.lucene.index.RandomIndexWriter; |
| import org.apache.lucene.index.Term; |
| import org.apache.lucene.search.IndexSearcher; |
| import org.apache.lucene.search.ScoreMode; |
| import org.apache.lucene.store.Directory; |
| import org.apache.lucene.util.LuceneTestCase; |
| import org.junit.Test; |
| |
| public class TestSpanCollection extends LuceneTestCase { |
| |
| protected IndexSearcher searcher; |
| protected Directory directory; |
| protected IndexReader reader; |
| |
| public static final String FIELD = "field"; |
| |
| public static FieldType OFFSETS = new FieldType(TextField.TYPE_STORED); |
| static { |
| OFFSETS.setIndexOptions(IndexOptions.DOCS_AND_FREQS_AND_POSITIONS_AND_OFFSETS); |
| } |
| |
| @Override |
| public void tearDown() throws Exception { |
| reader.close(); |
| directory.close(); |
| super.tearDown(); |
| } |
| |
| @Override |
| public void setUp() throws Exception { |
| super.setUp(); |
| directory = newDirectory(); |
| RandomIndexWriter writer = new RandomIndexWriter(random(), directory, |
| newIndexWriterConfig(new MockAnalyzer(random())).setMergePolicy(newLogMergePolicy())); |
| for (int i = 0; i < docFields.length; i++) { |
| Document doc = new Document(); |
| doc.add(newField(FIELD, docFields[i], OFFSETS)); |
| writer.addDocument(doc); |
| } |
| writer.forceMerge(1); |
| reader = writer.getReader(); |
| writer.close(); |
| searcher = newSearcher(getOnlyLeafReader(reader)); |
| } |
| |
| private static class TermCollector implements SpanCollector { |
| |
| final Set<Term> terms = new HashSet<>(); |
| |
| @Override |
| public void collectLeaf(PostingsEnum postings, int position, Term term) throws IOException { |
| terms.add(term); |
| } |
| |
| @Override |
| public void reset() { |
| terms.clear(); |
| } |
| |
| } |
| |
| protected String[] docFields = { |
| "w1 w2 w3 w4 w5", |
| "w1 w3 w2 w3 zz", |
| "w1 xx w2 yy w4", |
| "w1 w2 w1 w4 w2 w3" |
| }; |
| |
| private void checkCollectedTerms(Spans spans, TermCollector collector, Term... expectedTerms) throws IOException { |
| collector.reset(); |
| spans.collect(collector); |
| for (Term t : expectedTerms) { |
| assertTrue("Missing term " + t, collector.terms.contains(t)); |
| } |
| assertEquals("Unexpected terms found", expectedTerms.length, collector.terms.size()); |
| } |
| |
| @Test |
| public void testNestedNearQuery() throws IOException { |
| |
| // near(w1, near(w2, or(w3, w4))) |
| |
| SpanTermQuery q1 = new SpanTermQuery(new Term(FIELD, "w1")); |
| SpanTermQuery q2 = new SpanTermQuery(new Term(FIELD, "w2")); |
| SpanTermQuery q3 = new SpanTermQuery(new Term(FIELD, "w3")); |
| SpanTermQuery q4 = new SpanTermQuery(new Term(FIELD, "w4")); |
| |
| SpanOrQuery q5 = new SpanOrQuery(q4, q3); |
| SpanNearQuery q6 = new SpanNearQuery(new SpanQuery[]{q2, q5}, 1, true); |
| SpanNearQuery q7 = new SpanNearQuery(new SpanQuery[]{q1, q6}, 1, true); |
| |
| TermCollector collector = new TermCollector(); |
| Spans spans = q7.createWeight(searcher, ScoreMode.COMPLETE_NO_SCORES, 1f).getSpans(searcher.getIndexReader().leaves().get(0), SpanWeight.Postings.POSITIONS); |
| assertEquals(0, spans.advance(0)); |
| spans.nextStartPosition(); |
| checkCollectedTerms(spans, collector, new Term(FIELD, "w1"), new Term(FIELD, "w2"), new Term(FIELD, "w3")); |
| |
| assertEquals(3, spans.advance(3)); |
| spans.nextStartPosition(); |
| checkCollectedTerms(spans, collector, new Term(FIELD, "w1"), new Term(FIELD, "w2"), new Term(FIELD, "w4")); |
| spans.nextStartPosition(); |
| checkCollectedTerms(spans, collector, new Term(FIELD, "w1"), new Term(FIELD, "w2"), new Term(FIELD, "w3")); |
| |
| } |
| |
| @Test |
| public void testOrQuery() throws IOException { |
| SpanTermQuery q2 = new SpanTermQuery(new Term(FIELD, "w2")); |
| SpanTermQuery q3 = new SpanTermQuery(new Term(FIELD, "w3")); |
| SpanOrQuery orQuery = new SpanOrQuery(q2, q3); |
| |
| TermCollector collector = new TermCollector(); |
| Spans spans = orQuery.createWeight(searcher, ScoreMode.COMPLETE_NO_SCORES, 1f).getSpans(searcher.getIndexReader().leaves().get(0), SpanWeight.Postings.POSITIONS); |
| |
| assertEquals(1, spans.advance(1)); |
| spans.nextStartPosition(); |
| checkCollectedTerms(spans, collector, new Term(FIELD, "w3")); |
| spans.nextStartPosition(); |
| checkCollectedTerms(spans, collector, new Term(FIELD, "w2")); |
| spans.nextStartPosition(); |
| checkCollectedTerms(spans, collector, new Term(FIELD, "w3")); |
| |
| assertEquals(3, spans.advance(3)); |
| spans.nextStartPosition(); |
| checkCollectedTerms(spans, collector, new Term(FIELD, "w2")); |
| spans.nextStartPosition(); |
| checkCollectedTerms(spans, collector, new Term(FIELD, "w2")); |
| spans.nextStartPosition(); |
| checkCollectedTerms(spans, collector, new Term(FIELD, "w3")); |
| } |
| |
| @Test |
| public void testSpanNotQuery() throws IOException { |
| |
| SpanTermQuery q1 = new SpanTermQuery(new Term(FIELD, "w1")); |
| SpanTermQuery q2 = new SpanTermQuery(new Term(FIELD, "w2")); |
| SpanTermQuery q3 = new SpanTermQuery(new Term(FIELD, "w3")); |
| |
| SpanNearQuery nq = new SpanNearQuery(new SpanQuery[]{q1, q2}, 2, true); |
| SpanNotQuery notq = new SpanNotQuery(nq, q3); |
| |
| TermCollector collector = new TermCollector(); |
| Spans spans = notq.createWeight(searcher, ScoreMode.COMPLETE_NO_SCORES, 1f).getSpans(searcher.getIndexReader().leaves().get(0), SpanWeight.Postings.POSITIONS); |
| |
| assertEquals(2, spans.advance(2)); |
| spans.nextStartPosition(); |
| checkCollectedTerms(spans, collector, new Term(FIELD, "w1"), new Term(FIELD, "w2")); |
| |
| } |
| |
| } |
| |