TestReuseDirectory.java

gistfile1.java

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 org.apache.lucene.analysis.MockAnalyzer;
import org.apache.lucene.document.Document;
import org.apache.lucene.document.Field;
import org.apache.lucene.document.TextField;
import org.apache.lucene.store.Directory;
import org.apache.lucene.store.RAMDirectory;
import org.apache.lucene.util.LuceneTestCase;

import java.io.IOException;

/**
 */
public class TestReuseDirectory extends LuceneTestCase {

  public void testBasicReuse() throws IOException {
    Directory dir = new RAMDirectory();
    IndexWriter writer = new IndexWriter(dir, newIndexWriterConfig(TEST_VERSION_CURRENT, new MockAnalyzer(random())));
    Document document = new Document();
    document.add(new TextField("id", "1", Field.Store.YES));
    writer.addDocument(document);
    DirectoryReader open = DirectoryReader.open(writer, true);
    assertEquals(open.numDocs(), 1);
    writer.rollback();
    writer.close();

    writer = new IndexWriter(dir, newIndexWriterConfig(TEST_VERSION_CURRENT, new MockAnalyzer(random())));
    document = new Document();
    document.add(new TextField("id", "2", Field.Store.YES));
    writer.addDocument(document);
    writer.commit();
    writer.close();
    open.close(); // if you comment this out we are good!
    open = DirectoryReader.open(dir); // we fail here with java.io.FileNotFoundException: _0.si
    assertEquals(open.numDocs(), 1);
    StoredDocument storedDocument = open.document(0);
    assertEquals(storedDocument.get("id"), "2");
    open.close();
    dir.close();
  }
}