/******************************************************************************* | |
* Copyright (c) 1998, 2013 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 v1.0 and Eclipse Distribution License v. 1.0 | |
* which accompanies this distribution. | |
* The Eclipse Public License is available at http://www.eclipse.org/legal/epl-v10.html | |
* and the Eclipse Distribution License is available at | |
* http://www.eclipse.org/org/documents/edl-v10.php. | |
* | |
* 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"); | |
} | |
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; | |
} | |
} | |
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 | |
*/ | |
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(); | |
} | |
} |