| /* |
| * 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.testing.framework.*; |
| import org.eclipse.persistence.queries.*; |
| |
| /** |
| * Test direct read queries with various container policies. |
| */ |
| public class DirectReadQueryTest1 extends TestCase { |
| Stack stack; |
| |
| public DirectReadQueryTest1() { |
| setDescription("This tests direct read queries with various container policies."); |
| } |
| |
| public DirectReadQuery buildNewQuery() { |
| return new DirectReadQuery("select L_NAME from EMPLOYEE"); |
| } |
| |
| @Override |
| public void test() { |
| this.testStackContainerPolicy(); |
| this.testCursoredStreamPolicy(); |
| } |
| |
| /** |
| * assume the stack has already been populated by the previous test |
| */ |
| public void testCursoredStreamPolicy() { |
| |
| ValueReadQuery sizeQuery = new ValueReadQuery("select count(*) from EMPLOYEE"); |
| |
| DirectReadQuery query = this.buildNewQuery(); |
| query.useCursoredStream(5, 5, sizeQuery); |
| |
| CursoredStream stream = (CursoredStream) getSession().executeQuery(query); |
| // if we get here, we must not have generated a ClassCastException |
| |
| int count = 0; |
| while (stream.hasMoreElements()) { |
| count++; |
| String lastName = (String) stream.nextElement(); |
| if (lastName.length() == 0) { |
| throw new TestErrorException("missing data"); |
| } |
| } |
| if (count != stack.size()) { |
| throw new TestErrorException("stream does not match stack - " |
| + "expected: " + stack.size() + " actual: " + count); |
| } |
| } |
| |
| public void testStackContainerPolicy() { |
| DirectReadQuery query = this.buildNewQuery(); |
| query.useCollectionClass(Stack.class); |
| |
| stack = (Stack)getSession().executeQuery(query); |
| // if we get here, we must not have generated a ClassCastException |
| String lastName = (String)stack.peek(); |
| if (lastName.length() == 0) { |
| throw new TestErrorException("missing data"); |
| } |
| } |
| } |