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/*
* Copyright (c) 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.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.revision.CDORevision;
import org.eclipse.emf.cdo.common.security.CDOPermission;
import org.eclipse.emf.cdo.spi.common.revision.InternalCDORevision;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;
/**
* @author Eike Stepper
*/
public class LoadPermissionsRequest extends CDOClientRequest<Map<CDORevision, CDOPermission>>
{
private InternalCDORevision[] revisions;
public LoadPermissionsRequest(CDOClientProtocol protocol, InternalCDORevision[] revisions)
{
super(protocol, CDOProtocolConstants.SIGNAL_LOAD_PERMISSIONS);
this.revisions = revisions;
}
@Override
protected void requesting(CDODataOutput out) throws IOException
{
int length = revisions.length;
out.writeInt(length);
for (int i = 0; i < length; i++)
{
InternalCDORevision revision = revisions[i];
CDOID id = revision.getID();
out.writeCDOID(id);
byte bits = revision.getPermission().getBits();
out.writeByte(bits);
}
int referenceChunk = getSession().options().getCollectionLoadingPolicy().getInitialChunkSize();
out.writeInt(referenceChunk);
}
@Override
protected Map<CDORevision, CDOPermission> confirming(CDODataInput in) throws IOException
{
Map<CDORevision, CDOPermission> oldPermissions = null;
int length = revisions.length;
for (int i = 0; i < length; i++)
{
InternalCDORevision revision = revisions[i];
CDOPermission oldPermission = revision.getPermission();
byte bits = in.readByte();
CDOPermission newPermission = CDOPermission.get(bits);
if (oldPermission != newPermission)
{
boolean bypassPermissionChecks = revision.bypassPermissionChecks(true);
try
{
if (oldPermission == CDOPermission.NONE)
{
revision.readValues(in);
}
else if (newPermission == CDOPermission.NONE)
{
// TODO Handle newPermission == CDOPermission.NONE
// clearValues() also wipes out CDOResourceNode.name and CDOResourceFolder.nodes!
// revision.clearValues();
}
}
finally
{
revision.bypassPermissionChecks(bypassPermissionChecks);
}
revision.setPermission(newPermission);
if (oldPermissions == null)
{
oldPermissions = new HashMap<CDORevision, CDOPermission>();
}
oldPermissions.put(revision, oldPermission);
}
}
return oldPermissions;
}
}
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