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/*
* Copyright (c) 2004-2013 Eike Stepper (Berlin, Germany) and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Eike Stepper - initial API and implementation
*/
package org.eclipse.emf.cdo.tests.bugzilla;
import org.eclipse.emf.cdo.CDOObject;
import org.eclipse.emf.cdo.common.id.CDOID;
import org.eclipse.emf.cdo.common.lock.CDOLockState;
import org.eclipse.emf.cdo.common.lock.IDurableLockingManager.LockGrade;
import org.eclipse.emf.cdo.server.StoreThreadLocal;
import org.eclipse.emf.cdo.session.CDOSession;
import org.eclipse.emf.cdo.spi.server.InternalSession;
import org.eclipse.emf.cdo.tests.AbstractLockingTest;
import org.eclipse.emf.cdo.tests.model1.Category;
import org.eclipse.emf.cdo.tests.model1.Company;
import org.eclipse.emf.cdo.util.CDOUtil;
import org.eclipse.net4j.util.concurrent.IRWLockManager.LockType;
import org.eclipse.emf.spi.cdo.InternalCDOTransaction;
import org.eclipse.core.runtime.NullProgressMonitor;
import java.util.ArrayList;
import java.util.Collection;
import java.util.LinkedHashSet;
/**
* Test ensuring that locks are correctly released on deleted objects.
* @author Alex Lagarde
*/
public class Bugzilla_423699_Test extends AbstractLockingTest
{
private CDOSession session;
private InternalCDOTransaction tx;
private CDOObject container;
private CDOObject child;
@Override
protected void doSetUp() throws Exception
{
super.doSetUp();
// Open a session and a transaction
session = openSession();
tx = (InternalCDOTransaction)session.openTransaction();
// Create semantic model
Company company = getModel1Factory().createCompany();
Category category = getModel1Factory().createCategory();
company.getCategories().add(category);
tx.getOrCreateResource(getResourcePath("testResource")).getContents().add(company);
tx.commit();
container = CDOUtil.getCDOObject(company);
child = CDOUtil.getCDOObject(category);
}
@Override
protected void doTearDown() throws Exception
{
tx.close();
tx = null;
session.close();
session = null;
super.doTearDown();
}
public void testUnlockDeletedElementsWithDurableLockingAndAutoReleaseLocks() throws Exception
{
doTestUnlockDeletedElements(true, true);
}
public void testUnlockDeletedElementsWithDurableLockingAndNoAutoReleaseLocks() throws Exception
{
doTestUnlockDeletedElements(true, false);
}
public void testUnlockDeletedElementsWithNoDurableLockingAndAutoReleaseLocks() throws Exception
{
doTestUnlockDeletedElements(false, true);
}
public void testUnlockDeletedElementsWithNoDurableLockingAndNoAutoReleaseLocks() throws Exception
{
doTestUnlockDeletedElements(false, false);
}
/**
* Ensures that locks are correctly released on deleted objects.
* @param durableLocking indicates if durableLocking should be activated or not
* @param autoReleaseLocksEnabled indicates if locks should be release on commit or not
* @throws Exception if issue occurs while locking or committing elements
*/
private void doTestUnlockDeletedElements(boolean durableLocking, boolean autoReleaseLocksEnabled) throws Exception
{
// Step 1: update transaction options
tx.options().setAutoReleaseLocksEnabled(autoReleaseLocksEnabled);
if (durableLocking)
{
tx.enableDurableLocking();
}
CDOID containerID = container.cdoID();
CDOID childID = child.cdoID();
// Step 2: lock the root and its child
Collection<CDOObject> objectsToLock = new LinkedHashSet<CDOObject>();
objectsToLock.add(container);
objectsToLock.add(child);
tx.lockObjects(objectsToLock, LockType.WRITE, 10000);
assertIsLocked(durableLocking, true, containerID);
assertIsLocked(durableLocking, true, childID);
// Step 3: delete child from its container
((Company)CDOUtil.getEObject(container)).getCategories().clear();
// Step 4: commit
tx.commit(new NullProgressMonitor());
// Lock should be deleted on detached object
assertIsLocked(durableLocking, false, childID);
// Lock should be deleted only if lock autorelease is enabled
assertIsLocked(durableLocking, !autoReleaseLocksEnabled, containerID);
// Step 5 (optional): reopen transaction & session with the same durable locking ID
if (durableLocking)
{
String durableLockingID = tx.getDurableLockingID();
tx.close();
session.close();
session = openSession();
tx = (InternalCDOTransaction)session.openTransaction(durableLockingID);
tx.options().setAutoReleaseLocksEnabled(autoReleaseLocksEnabled);
// Lock states should not have changed
assertIsLocked(durableLocking, false, childID);
assertIsLocked(durableLocking, !autoReleaseLocksEnabled, containerID);
}
// Step 6: unlock all elements
tx.unlockObjects();
assertIsLocked(durableLocking, false, containerID);
assertIsLocked(durableLocking, false, childID);
}
/**
* Ensures that the given element is locked or not (according to the given parameter), durably or not (according to the given parameter).
* @param durably indicates if we expect a durable lock or not
* @param shouldBeLocked indicates if elements should be locked or not
* @param elementID {@link CDOID} of the element ot test
*/
private void assertIsLocked(boolean durably, boolean shouldBeLocked, CDOID elementID)
{
// Step 1: check durable lock
if (durably)
{
LockGrade durableLock = null;
try
{
InternalSession session = getRepository().getSessionManager().getSession(tx.getSessionID());
StoreThreadLocal.setSession(session);
// Do your call
durableLock = getRepository().getLockingManager().getLockArea(tx.getDurableLockingID()).getLocks()
.get(elementID);
}
finally
{
StoreThreadLocal.release();
}
assertEquals(elementID + " has not the expected durable lock status", shouldBeLocked, durableLock != null);
}
// Step 2: check lock
ArrayList<CDOID> elementIDs = new ArrayList<CDOID>();
elementIDs.add(elementID);
CDOLockState cdoLockState = tx.getLockStates(elementIDs)[0];
assertEquals(elementID + " has wrong lock status", shouldBeLocked, cdoLockState.getWriteLockOwner() != null);
}
}
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