| /* |
| * Copyright (c) 2010-2012 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.branch.CDOBranchPoint; |
| import org.eclipse.emf.cdo.common.lock.IDurableLockingManager.LockAreaNotFoundException; |
| 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.spi.server.InternalLockManager; |
| import org.eclipse.emf.cdo.spi.server.InternalSession; |
| import org.eclipse.emf.cdo.spi.server.InternalView; |
| |
| import java.io.IOException; |
| |
| /** |
| * @author Eike Stepper |
| */ |
| public class OpenViewIndication extends CDOServerReadIndication |
| { |
| private InternalView newView; |
| |
| private String message; |
| |
| public OpenViewIndication(CDOServerProtocol protocol) |
| { |
| super(protocol, CDOProtocolConstants.SIGNAL_OPEN_VIEW); |
| } |
| |
| @Override |
| protected void indicating(CDODataInput in) throws IOException |
| { |
| InternalSession session = getSession(); |
| |
| int viewID = in.readInt(); |
| boolean readOnly = in.readBoolean(); |
| |
| if (in.readBoolean()) |
| { |
| CDOBranchPoint branchPoint = in.readCDOBranchPoint(); |
| if (readOnly) |
| { |
| newView = session.openView(viewID, branchPoint); |
| } |
| else |
| { |
| newView = session.openTransaction(viewID, branchPoint); |
| } |
| } |
| else |
| { |
| InternalLockManager lockManager = getRepository().getLockingManager(); |
| |
| try |
| { |
| String durableLockingID = in.readString(); |
| newView = (InternalView)lockManager.openView(session, viewID, readOnly, durableLockingID); |
| } |
| catch (LockAreaNotFoundException ex) |
| { |
| // Client uses durableLockingID!=null && result==null to detect exceptional case |
| } |
| catch (IllegalStateException ex) |
| { |
| message = ex.getMessage(); |
| } |
| } |
| } |
| |
| @Override |
| protected void responding(CDODataOutput out) throws IOException |
| { |
| if (newView != null) |
| { |
| out.writeBoolean(true); |
| out.writeCDOBranchPoint(newView); |
| } |
| else |
| { |
| out.writeBoolean(false); |
| out.writeString(message); |
| } |
| } |
| } |