| package org.apache.lucene.index; |
| |
| /* |
| * 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.analysis.MockAnalyzer; |
| import org.apache.lucene.document.Document; |
| import org.apache.lucene.document.Field.Store; |
| import org.apache.lucene.document.StringField; |
| import org.apache.lucene.index.IndexWriterConfig.OpenMode; |
| import org.apache.lucene.search.IndexSearcher; |
| import org.apache.lucene.search.ReferenceManager; |
| import org.apache.lucene.search.SearcherFactory; |
| import org.apache.lucene.search.SearcherManager; |
| import org.apache.lucene.search.TermQuery; |
| import org.apache.lucene.search.TopDocs; |
| import org.apache.lucene.store.Directory; |
| import org.apache.lucene.store.RAMDirectory; |
| import org.apache.lucene.util.LuceneTestCase; |
| |
| |
| public class TestTryDelete extends LuceneTestCase |
| { |
| private static IndexWriter getWriter (Directory directory) |
| throws IOException |
| { |
| MergePolicy policy = new LogByteSizeMergePolicy(); |
| IndexWriterConfig conf = new IndexWriterConfig(TEST_VERSION_CURRENT, |
| new MockAnalyzer(random())); |
| conf.setMergePolicy(policy); |
| conf.setOpenMode(OpenMode.CREATE_OR_APPEND); |
| |
| IndexWriter writer = new IndexWriter(directory, conf); |
| |
| return writer; |
| } |
| |
| private static Directory createIndex () |
| throws IOException |
| { |
| Directory directory = new RAMDirectory(); |
| |
| IndexWriter writer = getWriter(directory); |
| |
| for (int i = 0; i < 10; i++) { |
| Document doc = new Document(); |
| doc.add(new StringField("foo", String.valueOf(i), Store.YES)); |
| writer.addDocument(doc); |
| } |
| |
| writer.commit(); |
| writer.close(); |
| |
| return directory; |
| } |
| |
| public void testTryDeleteDocument () |
| throws IOException |
| { |
| Directory directory = createIndex(); |
| |
| IndexWriter writer = getWriter(directory); |
| |
| ReferenceManager<IndexSearcher> mgr = new SearcherManager(writer, |
| true, |
| new SearcherFactory()); |
| |
| TrackingIndexWriter mgrWriter = new TrackingIndexWriter(writer); |
| |
| IndexSearcher searcher = mgr.acquire(); |
| |
| TopDocs topDocs = searcher.search(new TermQuery(new Term("foo", "0")), |
| 100); |
| assertEquals(1, topDocs.totalHits); |
| |
| long result; |
| if (random().nextBoolean()) { |
| IndexReader r = DirectoryReader.open(writer, true); |
| result = mgrWriter.tryDeleteDocument(r, 0); |
| r.close(); |
| } else { |
| result = mgrWriter.tryDeleteDocument(searcher.getIndexReader(), 0); |
| } |
| |
| // The tryDeleteDocument should have succeeded: |
| assertTrue(result != -1); |
| |
| assertTrue(writer.hasDeletions()); |
| |
| if (random().nextBoolean()) { |
| writer.commit(); |
| } |
| |
| assertTrue(writer.hasDeletions()); |
| |
| mgr.maybeRefresh(); |
| |
| searcher = mgr.acquire(); |
| |
| topDocs = searcher.search(new TermQuery(new Term("foo", "0")), 100); |
| |
| assertEquals(0, topDocs.totalHits); |
| } |
| |
| public void testTryDeleteDocumentCloseAndReopen () |
| throws IOException |
| { |
| Directory directory = createIndex(); |
| |
| IndexWriter writer = getWriter(directory); |
| |
| ReferenceManager<IndexSearcher> mgr = new SearcherManager(writer, |
| true, |
| new SearcherFactory()); |
| |
| IndexSearcher searcher = mgr.acquire(); |
| |
| TopDocs topDocs = searcher.search(new TermQuery(new Term("foo", "0")), |
| 100); |
| assertEquals(1, topDocs.totalHits); |
| |
| TrackingIndexWriter mgrWriter = new TrackingIndexWriter(writer); |
| long result = mgrWriter.tryDeleteDocument(DirectoryReader.open(writer, |
| true), 0); |
| |
| assertEquals(1, result); |
| |
| writer.commit(); |
| |
| assertTrue(writer.hasDeletions()); |
| |
| mgr.maybeRefresh(); |
| |
| searcher = mgr.acquire(); |
| |
| topDocs = searcher.search(new TermQuery(new Term("foo", "0")), 100); |
| |
| assertEquals(0, topDocs.totalHits); |
| |
| writer.close(); |
| |
| searcher = new IndexSearcher(DirectoryReader.open(directory)); |
| |
| topDocs = searcher.search(new TermQuery(new Term("foo", "0")), 100); |
| |
| assertEquals(0, topDocs.totalHits); |
| |
| } |
| |
| public void testDeleteDocuments () |
| throws IOException |
| { |
| Directory directory = createIndex(); |
| |
| IndexWriter writer = getWriter(directory); |
| |
| ReferenceManager<IndexSearcher> mgr = new SearcherManager(writer, |
| true, |
| new SearcherFactory()); |
| |
| IndexSearcher searcher = mgr.acquire(); |
| |
| TopDocs topDocs = searcher.search(new TermQuery(new Term("foo", "0")), |
| 100); |
| assertEquals(1, topDocs.totalHits); |
| |
| TrackingIndexWriter mgrWriter = new TrackingIndexWriter(writer); |
| long result = mgrWriter.deleteDocuments(new TermQuery(new Term("foo", |
| "0"))); |
| |
| assertEquals(1, result); |
| |
| // writer.commit(); |
| |
| assertTrue(writer.hasDeletions()); |
| |
| mgr.maybeRefresh(); |
| |
| searcher = mgr.acquire(); |
| |
| topDocs = searcher.search(new TermQuery(new Term("foo", "0")), 100); |
| |
| assertEquals(0, topDocs.totalHits); |
| } |
| } |