| /* |
| * Copyright (c) 2011, 2012, 2015 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.spi.server; |
| |
| import org.eclipse.emf.cdo.common.branch.CDOBranch; |
| import org.eclipse.emf.cdo.common.lock.IDurableLockingManager.LockArea; |
| import org.eclipse.emf.cdo.common.lock.IDurableLockingManager.LockAreaNotFoundException; |
| |
| import org.eclipse.net4j.util.CheckUtil; |
| |
| /** |
| * Static methods that may help with classes related to repository synchronization. |
| * |
| * @author Eike Stepper |
| * @since 4.1 |
| */ |
| public final class SyncingUtil |
| { |
| private SyncingUtil() |
| { |
| } |
| |
| public static InternalView openViewWithLockArea(InternalSession session, InternalLockManager lockManager, |
| CDOBranch viewedBranch, String lockAreaID) |
| { |
| LockArea lockArea; |
| InternalView view; |
| |
| try |
| { |
| lockArea = lockManager.getLockArea(lockAreaID); |
| |
| // If we get here, the lockArea already exists. |
| view = (InternalView)lockManager.openView(session, InternalSession.TEMP_VIEW_ID, true, lockAreaID); |
| } |
| catch (LockAreaNotFoundException e) |
| { |
| // If we get here, the lockArea does not yet exist, so we open |
| // a view without a lockArea first, then create a lockArea with the given ID, |
| // and associate it with the view. |
| view = session.openView(InternalSession.TEMP_VIEW_ID, viewedBranch.getHead()); |
| lockArea = lockManager.createLockArea(view, lockAreaID); |
| view.setDurableLockingID(lockAreaID); |
| } |
| |
| CheckUtil.checkNull(lockAreaID, "lockAreaID"); |
| CheckUtil.checkNull(lockArea, "lockArea"); |
| CheckUtil.checkState(lockAreaID.equals(lockArea.getDurableLockingID()), "lockAreaID has incorrect value"); |
| |
| return view; |
| } |
| } |