/******************************************************************************* | |
* 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 java.util.*; | |
import org.eclipse.persistence.queries.*; | |
import org.eclipse.persistence.testing.framework.*; | |
import org.eclipse.persistence.testing.models.employee.domain.*; | |
/** | |
* CR#4272 | |
* Test use of statement caching with ScrollableCursors. | |
*/ | |
public class ScrollableCursorStatementCachingReadTest extends TestCase { | |
protected Exception caughtException = null; | |
protected int size; | |
protected boolean origionalBindingState; | |
protected boolean origionalStatementCachingState; | |
protected boolean TYPE_SCROLL_INSENSITIVE_isSupported; | |
protected boolean CONCUR_UPDATABLE_isSupported; | |
public ScrollableCursorStatementCachingReadTest() { | |
setDescription("This test verifies that useScrollableCursor together with shouldCacheStatement on a query returns correct results"); | |
} | |
protected void setup() { | |
this.origionalBindingState = this.getSession().getPlatform().shouldBindAllParameters(); | |
if (getSession().getPlatform().isDB2() || getSession().getPlatform().isAccess() || | |
getSession().getPlatform().isTimesTen() || getSession().getPlatform().isHANA()) { | |
throw new TestWarningException("ScrollableCursor is not supported on this platform"); | |
} | |
if (getSession().getPlatform().isPervasive()) { | |
throw new TestWarningException("This test is not supported on the Pervasive 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; | |
} | |
this.origionalStatementCachingState = this.getSession().getPlatform().shouldCacheAllStatements(); | |
this.getSession().getPlatform().setShouldBindAllParameters(true); | |
this.getSession().getPlatform().setShouldCacheAllStatements(true); | |
} | |
public void test() { | |
ReadAllQuery query1 = new ReadAllQuery(); | |
query1.setReferenceClass(Employee.class); | |
Vector resultSet = null; | |
ReadAllQuery query2 = new ReadAllQuery(); | |
query2.setReferenceClass(Employee.class); | |
if(TYPE_SCROLL_INSENSITIVE_isSupported && CONCUR_UPDATABLE_isSupported) { | |
query2.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); | |
query2.useScrollableCursor(policy); | |
} | |
ScrollableCursor cursor = null; | |
resultSet = (Vector)getSession().executeQuery(query1); //caches the statement | |
try { | |
cursor = (ScrollableCursor)getSession().executeQuery(query2); | |
size = cursor.size(); | |
} catch (org.eclipse.persistence.exceptions.DatabaseException dbe) { | |
caughtException = dbe; | |
} finally { | |
if (cursor != null) { | |
cursor.close(); | |
} | |
} | |
} | |
protected void verify() { | |
if (caughtException != null) { | |
throw new TestErrorException("Exception is thrown because scrollable cursor is used on a cached statement. A new statement should be built when scrollable cursor is used."); | |
} | |
if (size != 12) { | |
throw new TestErrorException("The number of streamed objects does not match the number of objects stored on the database"); | |
} | |
} | |
public void reset() { | |
this.getSession().getPlatform().setShouldCacheAllStatements(this.origionalStatementCachingState); | |
this.getSession().getPlatform().setShouldBindAllParameters(this.origionalBindingState); | |
} | |
} |