/*******************************************************************************
* Copyright (c) 2011, 2015 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
* Mark Wolochuk - Bug 321041 ConcurrentModificationException on getFromIdentityMap() fix
******************************************************************************/
package org.eclipse.persistence.testing.tests.identitymaps;
import java.util.ConcurrentModificationException;
import org.eclipse.persistence.expressions.Expression;
import org.eclipse.persistence.expressions.ExpressionBuilder;
import org.eclipse.persistence.queries.ReadObjectQuery;
import org.eclipse.persistence.sessions.UnitOfWork;
import org.eclipse.persistence.testing.framework.AutoVerifyTestCase;
import org.eclipse.persistence.testing.framework.TestErrorException;
import org.eclipse.persistence.testing.models.employee.domain.Employee;
/**
* Test for bug fix 321041 - EclipseLink throws ConcurrentModificationException when triggering lazy load from conforming query
* @author tware
*
*/
public class TriggerValueHoldersSelfReferencingOneToOneTest extends AutoVerifyTestCase{
protected UnitOfWork uow = null;
protected ConcurrentModificationException exception = null;
public void setup(){
getSession().getIdentityMapAccessor().initializeAllIdentityMaps();
uow = getSession().acquireUnitOfWork();
// preload the UnitOfWork identity map with 2 Employees which have different managers
ExpressionBuilder emp = new ExpressionBuilder();
Expression queryExp = emp.get("firstName").equal("Charles").and(emp.get("lastName").equal("Chanley"));
uow.readObject(Employee.class, queryExp);
emp = new ExpressionBuilder();
queryExp = emp.get("firstName").equal("Marcus").and(emp.get("lastName").equal("Saunders"));
uow.readObject(Employee.class, queryExp);
}
public void test(){
// We query for both Employees here because it is impossible to tell which order
// keys will be returned from the identity map in
// This bug only occurs when the first key returned is non-conforming and
// a future key must be looked up
ExpressionBuilder emp = new ExpressionBuilder();
Expression queryExp = emp.get("manager").get("firstName").equal("Bob");
ReadObjectQuery query = new ReadObjectQuery(Employee.class, queryExp);
query.conformResultsInUnitOfWork();
query.getInMemoryQueryIndirectionPolicy().triggerIndirection();
uow.executeQuery(query);
emp = new ExpressionBuilder();
queryExp = emp.get("manager").get("firstName").equal("John");
query = new ReadObjectQuery(Employee.class, queryExp);
query.conformResultsInUnitOfWork();
query.getInMemoryQueryIndirectionPolicy().triggerIndirection();
uow.executeQuery(query);
}
public void verify(){
if (exception != null){
throw new TestErrorException("A ConcurrentModificationException was thrown when using a Self Referencing Relationship and " +
"a TriggerIndirection query policy.");
}
}
public void reset(){
uow = null;
getSession().getIdentityMapAccessor().initializeAllIdentityMaps();
}
}