| /* |
| * Copyright (c) 2016 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.server.internal.net4j.protocol; |
| |
| import org.eclipse.emf.cdo.common.id.CDOID; |
| import org.eclipse.emf.cdo.common.protocol.CDODataInput; |
| import org.eclipse.emf.cdo.common.protocol.CDODataOutput; |
| import org.eclipse.emf.cdo.common.protocol.CDOProtocolConstants; |
| import org.eclipse.emf.cdo.common.protocol.CDOProtocolConstants.UnitOpcode; |
| import org.eclipse.emf.cdo.common.revision.CDORevision; |
| import org.eclipse.emf.cdo.common.revision.CDORevisionCache; |
| import org.eclipse.emf.cdo.common.revision.CDORevisionHandler; |
| import org.eclipse.emf.cdo.server.IUnit; |
| import org.eclipse.emf.cdo.server.IUnitManager; |
| import org.eclipse.emf.cdo.spi.server.InternalRepository; |
| import org.eclipse.emf.cdo.spi.server.InternalView; |
| |
| import org.eclipse.net4j.util.om.monitor.OMMonitor; |
| import org.eclipse.net4j.util.om.monitor.OMMonitor.Async; |
| |
| import java.io.IOException; |
| |
| /** |
| * @author Eike Stepper |
| */ |
| public class UnitIndication extends CDOServerReadIndicationWithMonitoring |
| { |
| private int viewID; |
| |
| private CDOID rootID; |
| |
| private UnitOpcode opcode; |
| |
| public UnitIndication(CDOServerProtocol protocol) |
| { |
| super(protocol, CDOProtocolConstants.SIGNAL_UNIT); |
| } |
| |
| @Override |
| protected int getIndicatingWorkPercent() |
| { |
| return 1; |
| } |
| |
| @Override |
| protected void indicating(CDODataInput in, OMMonitor monitor) throws Exception |
| { |
| viewID = in.readInt(); |
| rootID = in.readCDOID(); |
| opcode = UnitOpcode.values()[in.readByte()]; |
| } |
| |
| @Override |
| protected void responding(final CDODataOutput out, OMMonitor monitor) throws Exception |
| { |
| final InternalView view = getView(viewID); |
| final InternalRepository repository = getRepository(); |
| |
| if (opcode == UnitOpcode.CHECK) |
| { |
| IUnitManager unitManager = repository.getUnitManager(); |
| boolean isUnit = unitManager.isUnit(rootID); |
| out.writeBoolean(isUnit); |
| return; |
| } |
| |
| if (opcode == UnitOpcode.CLOSE) |
| { |
| IUnitManager unitManager = repository.getUnitManager(); |
| IUnit unit = unitManager.getUnit(rootID); |
| if (unit != null) |
| { |
| unit.close(view); |
| out.writeBoolean(true); |
| return; |
| } |
| |
| out.writeBoolean(false); |
| return; |
| } |
| |
| final CDORevisionCache revisionCache = repository.getRevisionManager().getCache(); |
| final IOException[] ioException = { null }; |
| final RuntimeException[] runtimeException = { null }; |
| |
| monitor.begin(); |
| Async async = monitor.forkAsync(); |
| |
| try |
| { |
| boolean success = view.openUnit(rootID, opcode, new CDORevisionHandler() |
| { |
| public boolean handleRevision(CDORevision revision) |
| { |
| try |
| { |
| view.unsubscribe(revision.getID()); |
| revisionCache.addRevision(revision); |
| |
| out.writeCDORevision(revision, CDORevision.UNCHUNKED); // Exposes revision to client side |
| return true; |
| } |
| catch (IOException ex) |
| { |
| ioException[0] = ex; |
| } |
| catch (RuntimeException ex) |
| { |
| runtimeException[0] = ex; |
| } |
| |
| return false; |
| } |
| }, monitor); |
| |
| if (ioException[0] != null) |
| { |
| throw ioException[0]; |
| } |
| |
| if (runtimeException[0] != null) |
| { |
| throw runtimeException[0]; |
| } |
| |
| out.writeCDORevision(null, CDORevision.UNCHUNKED); // No more revisions |
| out.writeBoolean(success); |
| } |
| finally |
| { |
| async.stop(); |
| monitor.done(); |
| } |
| } |
| } |