| /* |
| * Copyright (c) 2010, 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: |
| // 08/17/2010-2.2 Tom Ware |
| // - 321041 ConcurrentModificationException on getFromIdentityMap() fix |
| package org.eclipse.persistence.testing.tests.identitymaps; |
| |
| 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.TestCase; |
| import org.eclipse.persistence.testing.models.employee.domain.Employee; |
| |
| /** |
| * Bug# 321041 - EclipseLink throws ConcurrentModificationException when triggering lazy load from conforming query |
| */ |
| public class TriggerValueHoldersSelfReferencingOneToOneTest extends TestCase { |
| |
| /** Current transaction. */ |
| protected UnitOfWork uow = null; |
| |
| /** |
| * Test setup. |
| * Open transaction, initialize query and initialize cache with 1st query executions. |
| */ |
| @Override |
| 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); |
| } |
| |
| /** |
| * Test cleanup. |
| * Release transaction and reset cache. |
| */ |
| @Override |
| public void reset() { |
| uow.release(); |
| uow = null; |
| getSession().getIdentityMapAccessor().initializeAllIdentityMaps(); |
| } |
| |
| /** |
| * Test case. |
| * Verify that {@code ConcurrentModificationException} is not thrown from {@code IdentityMapManager} |
| * during 2nd queries execution when objects are already in the cache. |
| */ |
| @Override |
| 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(); |
| Employee bob = (Employee)uow.executeQuery(query); |
| assertNotNull(bob); |
| assertEquals("Bob", bob.getManager().getFirstName()); |
| emp = new ExpressionBuilder(); |
| queryExp = emp.get("manager").get("firstName").equal("John"); |
| query = new ReadObjectQuery(Employee.class, queryExp); |
| query.conformResultsInUnitOfWork(); |
| query.getInMemoryQueryIndirectionPolicy().triggerIndirection(); |
| Employee john = (Employee)uow.executeQuery(query); |
| assertNotNull(john); |
| assertEquals("John", john.getManager().getFirstName()); |
| } |
| |
| } |