| /* |
| * 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; |
| |
| import org.eclipse.persistence.descriptors.DescriptorEventAdapter; |
| import org.eclipse.persistence.expressions.ExpressionBuilder; |
| import org.eclipse.persistence.internal.sessions.AbstractSession; |
| import org.eclipse.persistence.queries.Cursor; |
| import org.eclipse.persistence.queries.ReadAllQuery; |
| import org.eclipse.persistence.sessions.Session; |
| 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.framework.TestWarningException; |
| import org.eclipse.persistence.testing.models.employee.domain.Employee; |
| |
| |
| public class ConcurrentRefreshOnUpdateTest extends AutoVerifyTestCase { |
| // used as monitor for test |
| public static Employee lock; |
| |
| public static boolean writerWaiting = false; |
| public static boolean readerWaiting = false; |
| // stores the version of the object |
| public static int version; |
| |
| public DescriptorEventAdapter adaptor; |
| |
| //used in remote unit of work tests to control when the lock is released |
| public static int depth; |
| |
| public boolean writer; |
| |
| //session for the threads |
| public Session session; |
| |
| public ConcurrentRefreshOnUpdateTest() { |
| adaptor = new ConcurrentRefreshEventAdapter(); |
| } |
| |
| public ConcurrentRefreshOnUpdateTest(boolean writer, Session session) { |
| this.writer = writer; |
| this.session = session; |
| } |
| |
| @Override |
| public void setup() { |
| if (getSession().isDistributedSession()) { |
| throw new TestWarningException("Test unavailable on Remote UnitOfWork because of timing issues"); |
| } |
| getSession().getIdentityMapAccessor().initializeAllIdentityMaps(); |
| getSession().getDescriptor(Employee.class).getEventManager().addListener(this.adaptor); |
| } |
| |
| @Override |
| public void test() { |
| ConcurrentRefreshOnUpdateTest.lock = (Employee)getSession().readObject(Employee.class); |
| Object primaryKey = ConcurrentRefreshOnUpdateTest.lock.getId(); |
| |
| ConcurrentRefreshOnUpdateTest.version = |
| ((Number)getSession().getDescriptor(Employee.class).getOptimisticLockingPolicy().getWriteLockValue(ConcurrentRefreshOnUpdateTest.lock, |
| primaryKey, |
| (AbstractSession)getSession())).intValue(); |
| String oldName = ConcurrentRefreshOnUpdateTest.lock.getFirstName(); |
| |
| |
| Thread thread1 = null; |
| Thread thread2 = null; |
| try { |
| thread1 = new Thread(new ConcurrentRefreshOnUpdateTest(true, getSession()).runnable()); |
| //start the thread and wait for the thread to get under way before continueing. |
| thread1.start(); |
| thread2 = new Thread(new ConcurrentRefreshOnUpdateTest(false, getSession()).runnable()); |
| //start the thread and wait for the thread to get under way before continueing. |
| thread2.start(); |
| } catch (Exception ex) { |
| //just ignore |
| } |
| try { |
| thread1.join(); |
| thread2.join(); |
| } catch (Exception ex) { |
| //just an interrupt ignore |
| } |
| if (ConcurrentRefreshOnUpdateTest.version != |
| ((Number)getSession().getDescriptor(Employee.class).getOptimisticLockingPolicy().getWriteLockValue(ConcurrentRefreshOnUpdateTest.lock, |
| primaryKey, |
| (AbstractSession)getSession())).intValue()) { |
| if (ConcurrentRefreshOnUpdateTest.lock.getFirstName().equals(oldName)) { |
| throw new TestErrorException("The refresh over wrote new data but left the new version"); |
| } |
| } |
| |
| } |
| |
| public Runnable runnable() { |
| return new Runnable() { |
| @Override |
| public void run() { |
| if (writer) { |
| UnitOfWork uow = session.acquireUnitOfWork(); |
| Employee empClone = (Employee)uow.registerObject(ConcurrentRefreshOnUpdateTest.lock); |
| empClone.setFirstName("The New City Name" + System.currentTimeMillis()); |
| synchronized (ConcurrentRefreshOnUpdateTest.lock) { |
| if (ConcurrentRefreshOnUpdateTest.readerWaiting) { |
| ConcurrentRefreshOnUpdateTest.lock.notifyAll(); |
| } else { |
| ConcurrentRefreshOnUpdateTest.writerWaiting = true; |
| try { |
| ConcurrentRefreshOnUpdateTest.lock.wait(30000); |
| } catch (InterruptedException ex) { |
| //ignore |
| } |
| ConcurrentRefreshOnUpdateTest.writerWaiting = false; |
| } |
| } |
| uow.commit(); |
| } else { |
| ReadAllQuery query = new ReadAllQuery(Employee.class); |
| query.setShouldRefreshIdentityMapResult(true); |
| query.useCursoredStream(0, 1); |
| query.setSelectionCriteria(new ExpressionBuilder().get("id").equal(ConcurrentRefreshOnUpdateTest.lock.getId())); |
| Cursor cursor = (Cursor)session.executeQuery(query); |
| |
| //wait for both thread to set up |
| synchronized (ConcurrentRefreshOnUpdateTest.lock) { |
| if (ConcurrentRefreshOnUpdateTest.writerWaiting) { |
| ConcurrentRefreshOnUpdateTest.lock.notifyAll(); |
| } else { |
| ConcurrentRefreshOnUpdateTest.readerWaiting = true; |
| try { |
| ConcurrentRefreshOnUpdateTest.lock.wait(30000); |
| } catch (InterruptedException ex) { |
| //ignore |
| } |
| ConcurrentRefreshOnUpdateTest.readerWaiting = false; |
| } |
| } |
| Thread.yield(); |
| // writer is commiting, wait for postMerge event |
| synchronized (ConcurrentRefreshOnUpdateTest.lock) { |
| if (!ConcurrentRefreshOnUpdateTest.writerWaiting) { |
| ConcurrentRefreshOnUpdateTest.readerWaiting = true; |
| try { |
| ConcurrentRefreshOnUpdateTest.lock.wait(30000); |
| } catch (InterruptedException ex) { |
| |
| } //ignore |
| ConcurrentRefreshOnUpdateTest.readerWaiting = false; |
| } |
| } |
| if (cursor.hasMoreElements()) { |
| cursor.nextElement(); |
| } |
| cursor.close(); |
| } |
| } |
| }; |
| } |
| |
| @Override |
| public void reset() { |
| getSession().getIdentityMapAccessor().initializeAllIdentityMaps(); |
| getSession().getDescriptor(Employee.class).getEventManager().removeListener(this.adaptor); |
| } |
| } |