| /* |
| * Copyright (c) 2017, 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: |
| // 12/14/2017-3.0 Tomas Kraus |
| // - 522635: ConcurrentModificationException when triggering lazy load from conforming query |
| package org.eclipse.persistence.testing.tests.identitymaps; |
| |
| import java.util.Vector; |
| |
| import org.eclipse.persistence.expressions.ExpressionBuilder; |
| import org.eclipse.persistence.queries.InMemoryQueryIndirectionPolicy; |
| import org.eclipse.persistence.queries.ReadAllQuery; |
| import org.eclipse.persistence.sessions.UnitOfWork; |
| import org.eclipse.persistence.testing.framework.TestCase; |
| import org.eclipse.persistence.testing.models.employee.domain.Employee; |
| |
| /** |
| * Bug# 522635 - Verify that {@code ConcurrentModificationException} is not thrown from {@code IdentityMapManager} |
| * when {@code getAllFromIdentityMap} method is being called twice. |
| */ |
| public class GetAllFromIdentityMapTest extends TestCase { |
| |
| /** Current transaction. */ |
| private UnitOfWork uow = null; |
| |
| /** Query instance. */ |
| private ReadAllQuery query; |
| |
| /** |
| * Create an instance of {@link ReadAllQuery} and initialize it. |
| * |
| * @param c entity class |
| * @return new instance of initialized {@link ReadAllQuery} |
| */ |
| private static ReadAllQuery newReadAllQuery(Class<?> c) { |
| final ReadAllQuery query = new ReadAllQuery(c); |
| query.conformResultsInUnitOfWork(); |
| query.setInMemoryQueryIndirectionPolicy(new InMemoryQueryIndirectionPolicy(InMemoryQueryIndirectionPolicy.SHOULD_TRIGGER_INDIRECTION)); |
| return query; |
| } |
| |
| /** |
| * Test setup. |
| * Open transaction, initialize query and initialize cache with 1st query execution. |
| */ |
| @Override |
| public void setup() { |
| getSession().getIdentityMapAccessor().initializeAllIdentityMaps(); |
| uow = getSession().acquireUnitOfWork(); |
| query = newReadAllQuery(Employee.class); |
| ExpressionBuilder emp = new ExpressionBuilder(); |
| query.setSelectionCriteria(emp.get("manager").get("firstName").equal("Bob")); |
| uow.executeQuery(query); |
| } |
| |
| /** |
| * 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 query execution when objects are already in the cache. |
| */ |
| @Override |
| public void test() throws Throwable { |
| Vector<Employee> employees = (Vector<Employee>)uow.executeQuery(query); |
| assertFalse(employees.isEmpty()); |
| for (Employee employee : employees) { |
| assertEquals("Bob", employee.getManager().getFirstName()); |
| } |
| } |
| |
| } |