| /* |
| * Copyright (c) 1998, 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: |
| // Oracle - initial API and implementation from Oracle TopLink |
| package org.eclipse.persistence.testing.tests.unitofwork.transactionisolation; |
| |
| import org.eclipse.persistence.queries.ReadObjectQuery; |
| import org.eclipse.persistence.sessions.UnitOfWork; |
| import org.eclipse.persistence.testing.framework.AutoVerifyTestCase; |
| import org.eclipse.persistence.testing.models.employee.domain.Employee; |
| |
| |
| /** |
| * Tests the Session read refactoring / reading through the write connection |
| * properly feature. |
| * <p> |
| * This test verifies that originals of objects read by a UnitOfWork in early |
| * transaction are not placed in the shared cache until commit/merge time. |
| * <p> |
| * If the object is not registered in the UnitOfWork, you would think it would |
| * be safe to put the original in the shared cache, for if not registered must |
| * not have changed it. However this feature is being quite particular about |
| * not putting anything in the shared cache, even if we are pretty sure we can |
| * get away with it. I.e. maybe they executed a direct no select and messed up |
| * some rows, even though we haven't registered anything yet. |
| * @author smcritch |
| */ |
| public class TransactionIsolationNoOriginalsTest extends AutoVerifyTestCase { |
| UnitOfWork unitOfWork; |
| |
| @Override |
| protected void setup() throws Exception { |
| getSession().getIdentityMapAccessor().initializeAllIdentityMaps(); |
| unitOfWork = getSession().acquireUnitOfWork(); |
| } |
| |
| @Override |
| public void reset() throws Exception { |
| if (unitOfWork != null) { |
| getSession().getIdentityMapAccessor().initializeAllIdentityMaps(); |
| unitOfWork.release(); |
| unitOfWork = null; |
| } |
| } |
| |
| @Override |
| public void test() { |
| unitOfWork.beginEarlyTransaction(); |
| |
| Employee employeeClone = (Employee)unitOfWork.readObject(Employee.class); |
| |
| strongAssert(employeeClone != null, "Executing reads in early transaction doesn't work."); |
| |
| ReadObjectQuery cacheQuery = new ReadObjectQuery(Employee.class); |
| cacheQuery.checkCacheOnly(); |
| |
| Employee employee = (Employee)getSession().executeQuery(cacheQuery); |
| |
| strongAssert(employee == null, "There should be nothing in the shared cache."); |
| } |
| } |