/******************************************************************************* | |
* 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.Vector; | |
import org.eclipse.persistence.internal.sessions.AbstractSession; | |
import org.eclipse.persistence.sessions.Session; | |
import org.eclipse.persistence.sessions.UnitOfWork; | |
import org.eclipse.persistence.expressions.ExpressionBuilder; | |
import org.eclipse.persistence.queries.ReadAllQuery; | |
import org.eclipse.persistence.queries.DatabaseQuery; | |
import org.eclipse.persistence.queries.QueryRedirector; | |
import org.eclipse.persistence.sessions.DatabaseRecord; | |
import org.eclipse.persistence.testing.framework.*; | |
import org.eclipse.persistence.testing.models.employee.domain.Employee; | |
/** | |
* Tests queries that use a redirect. With a redirect we would see null pointer | |
* exception . This only happens with redirectors because if there is no | |
* redirector then the original query is not cloned when it is executed against | |
* the UOW's parent Session. So by the time we register the Objects, after the | |
* query has been executed against the parent session, the descriptor will have | |
* been set. | |
* When there is a redirector, the Descriptor is never set on the original query | |
* because the parent Session is actually dealing with a cloned query. So you | |
* get a NullPointerException during registration of the Objects returned from | |
* the query. | |
* BUG# 2692956 | |
* | |
* @author Guy Pelletier | |
* @version 1.0 January 08/03 | |
*/ | |
public class | |
RedirectQueryOnUOWTest extends TestCase { | |
Exception m_exceptionCaught; | |
public RedirectQueryOnUOWTest() { | |
} | |
public void reset() { | |
getSession().getIdentityMapAccessor().initializeIdentityMaps(); | |
} | |
protected void setup() { | |
m_exceptionCaught = null; | |
getSession().getIdentityMapAccessor().initializeIdentityMaps(); | |
} | |
public void test() { | |
ReadAllQuery r = | |
new ReadAllQuery(Employee.class, (new ExpressionBuilder()).get("firstName").equal("Jill")); | |
r.setRedirector(new StupidRedirector()); | |
UnitOfWork uow = getSession().acquireUnitOfWork(); | |
try { | |
Vector employees = (Vector)uow.executeQuery(r); | |
} catch (NullPointerException e) { | |
m_exceptionCaught = e; | |
} | |
} | |
protected void verify() { | |
if (m_exceptionCaught != null) { | |
throw new TestErrorException("NullPointerException was thrown when executing a query with a redirect", | |
m_exceptionCaught); | |
} | |
} | |
} | |
class StupidRedirector implements QueryRedirector { | |
public Object invokeQuery(DatabaseQuery arg0, org.eclipse.persistence.sessions.Record arg1, Session arg2) { | |
// change code to do the correct class cast. | |
// Also for this test case to be relevant a completely different query | |
// must be executed. | |
// This bug was a flaw with the pre session read refactoring design, so | |
// the test is no longer really relevant. | |
ReadAllQuery stupidQuery = | |
new ReadAllQuery(Employee.class, (new ExpressionBuilder()).get("firstName").equal("Bob")); | |
return ((AbstractSession)arg2).executeQuery(stupidQuery, (DatabaseRecord)arg1); | |
} | |
} |