plugins/org.eclipse.emf.cdo.net4j/src/org/eclipse/emf/cdo/internal/net4j/protocol/LoadObjectLifetimeRequest.java

/*
 * Copyright (c) 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.internal.net4j.protocol;

import org.eclipse.emf.cdo.common.branch.CDOBranchPoint;
import org.eclipse.emf.cdo.common.branch.CDOBranchPointRange;
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.internal.net4j.bundle.OM;
import org.eclipse.emf.cdo.spi.common.branch.CDOBranchUtil;

import org.eclipse.net4j.util.om.trace.ContextTracer;

import java.io.IOException;
import java.text.MessageFormat;

/**
 * @author Eike Stepper
 */
public class LoadObjectLifetimeRequest extends CDOClientRequest<CDOBranchPointRange>
{
  private static final ContextTracer TRACER = new ContextTracer(OM.DEBUG_PROTOCOL, LoadObjectLifetimeRequest.class);

  private CDOID id;

  private CDOBranchPoint branchPoint;

  public LoadObjectLifetimeRequest(CDOClientProtocol protocol, CDOID id, CDOBranchPoint branchPoint)
  {
    super(protocol, CDOProtocolConstants.SIGNAL_LOAD_OBJECT_LIFETIME);
    this.id = id;
    this.branchPoint = branchPoint;
  }

  @Override
  protected void requesting(CDODataOutput out) throws IOException
  {
    if (TRACER.isEnabled())
    {
      TRACER.format("Writing id: {0}", id); //$NON-NLS-1$
    }

    out.writeCDOID(id);
    if (TRACER.isEnabled())
    {
      TRACER.format("Writing branchPoint: {0}", branchPoint); //$NON-NLS-1$
    }

    out.writeCDOBranchPoint(branchPoint);
  }

  @Override
  protected CDOBranchPointRange confirming(CDODataInput in) throws IOException
  {
    if (in.readBoolean())
    {
      CDOBranchPoint point1 = in.readCDOBranchPoint();
      CDOBranchPoint point2 = in.readCDOBranchPoint();
      return CDOBranchUtil.createRange(point1, point2);
    }

    return null;
  }

  @Override
  public String toString()
  {
    return MessageFormat.format("LoadFirstRevisionsRequest(id={0}, branchPoint={1})", id, branchPoint);
  }
}