| /* |
| * 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 org.eclipse.persistence.queries.*; |
| import org.eclipse.persistence.expressions.*; |
| |
| import org.eclipse.persistence.testing.framework.*; |
| import org.eclipse.persistence.testing.models.employee.domain.*; |
| |
| /** |
| * Test the scrollable cursor apis like hasNext(), hasPrevious() when no result will be returned from the query |
| */ |
| public class ScrollableCursorAPITest extends TestCase { |
| protected ScrollableCursor employeeStream; |
| protected boolean TYPE_SCROLL_INSENSITIVE_isSupported; |
| protected boolean CONCUR_UPDATABLE_isSupported; |
| |
| public ScrollableCursorAPITest() { |
| setDescription("Test the scrollable cursor APIs like hasNext(), hasPrevious() when no result will be returned from the query"); |
| } |
| |
| @Override |
| protected void setup() { |
| if (getSession().getPlatform().isDB2() || getSession().getPlatform().isAccess() || |
| getSession().getPlatform().isTimesTen() || getSession().getPlatform().isHANA()) { |
| throw new TestWarningException("ScrollableCursor is not supported on this platform"); |
| } |
| TYPE_SCROLL_INSENSITIVE_isSupported = true; |
| CONCUR_UPDATABLE_isSupported = true; |
| if(getSession().getPlatform().isSQLServer()) { |
| // In case either TYPE_SCROLL_INSENSITIVE or CONCUR_UPDATABLE used |
| // MS SQL Server Version: 9.00.2050; MS SQL Server 2005 JDBC Driver Version: 1.2.2828.100 throws exception: |
| // com.microsoft.sqlserver.jdbc.SQLServerException: The cursor type/concurrency combination is not supported. |
| TYPE_SCROLL_INSENSITIVE_isSupported = false; |
| CONCUR_UPDATABLE_isSupported = false; |
| } |
| if(getSession().getPlatform().isSymfoware()) { |
| // Symfoware supports updatable cursors, but considers SQL queries |
| // that select from multiple tables as non-updatable, thus raising |
| // an exception for this test. |
| CONCUR_UPDATABLE_isSupported = false; |
| } |
| } |
| |
| @Override |
| public void test() { |
| ReadAllQuery query = new ReadAllQuery(); |
| query.setReferenceClass(Employee.class); |
| ExpressionBuilder builder = new ExpressionBuilder(); |
| Expression exp = builder.get("lastName").like("%blablablabla%"); //no data should be found |
| query.setSelectionCriteria(exp); |
| if(TYPE_SCROLL_INSENSITIVE_isSupported && CONCUR_UPDATABLE_isSupported) { |
| query.useScrollableCursor(); |
| } else { |
| ScrollableCursorPolicy policy = new ScrollableCursorPolicy(); |
| if(!TYPE_SCROLL_INSENSITIVE_isSupported) { |
| policy.setResultSetType(ScrollableCursorPolicy.TYPE_SCROLL_SENSITIVE); |
| } |
| if(!CONCUR_UPDATABLE_isSupported) { |
| policy.setResultSetConcurrency(ScrollableCursorPolicy.CONCUR_READ_ONLY); |
| } |
| policy.setPageSize(10); |
| query.useScrollableCursor(policy); |
| } |
| employeeStream = (ScrollableCursor)getSession().executeQuery(query); |
| } |
| |
| /** |
| * Verify if the scrollable cursor APIs are functioning properly |
| */ |
| @Override |
| protected void verify() { |
| if (employeeStream.hasNext() || employeeStream.hasPrevious() || employeeStream.isLast() || |
| employeeStream.isFirst()) { |
| employeeStream.close(); |
| throw new TestErrorException("The the scrollable cursor APIs are not working properly"); |
| } |
| employeeStream.close(); |
| |
| } |
| } |