| /* |
| * Copyright (c) 1998, 2021 Oracle and/or its affiliates. All rights reserved. |
| * |
| * This program and the accompanying materials are made available under the |
| * terms of the Eclipse Public License v. 2.0 which is available at |
| * http://www.eclipse.org/legal/epl-2.0, |
| * or the Eclipse Distribution License v. 1.0 which is available at |
| * http://www.eclipse.org/org/documents/edl-v10.php. |
| * |
| * SPDX-License-Identifier: EPL-2.0 OR BSD-3-Clause |
| */ |
| |
| // Contributors: |
| // Oracle - initial API and implementation from Oracle TopLink |
| package org.eclipse.persistence.testing.tests.queries; |
| |
| import java.util.*; |
| |
| import org.eclipse.persistence.queries.*; |
| import org.eclipse.persistence.expressions.*; |
| |
| /** |
| * Test the cursored stream feature by performing a cursor read on the database |
| * and comparing the contents to a normal query read. |
| */ |
| public class CursoredStreamWithUselessConformTest extends CursoredStreamTest { |
| public CursoredStreamWithUselessConformTest(Class referenceClass, Expression expression) { |
| super(referenceClass, expression); |
| } |
| |
| @Override |
| public void test() { |
| |
| ReadAllQuery query = new ReadAllQuery(); |
| CursoredStream stream = null; |
| |
| try { |
| Object databaseObject; |
| |
| cursoredQueryObjects = new Vector(); |
| |
| query.setReferenceClass(getReferenceClass()); |
| query.setSelectionCriteria(joinExpression); |
| query.useCursoredStream(); |
| //No unit of work, but checking for NPE. Fixed CR2671 |
| query.conformResultsInUnitOfWork(); |
| stream = (CursoredStream)getSession().executeQuery(query); |
| |
| // Test dual cursors and read(int) |
| CursoredStream stream2 = (CursoredStream)getSession().executeQuery(query); |
| try { |
| stream2.read(5); |
| } catch (org.eclipse.persistence.exceptions.QueryException ex) { |
| } // ignore at end |
| setSize(stream2.size()); |
| stream2.close(); |
| while (!stream.atEnd()) { |
| databaseObject = stream.read(); |
| getCursoredQueryObjects().addElement(databaseObject); |
| stream.releasePrevious(); |
| } |
| } finally { |
| if (stream != null) { |
| stream.close(); |
| } |
| } |
| } |
| } |