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/*
* Copyright (c) 2004 - 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:
* Simon McDuff - initial API and implementation
* Simon McDuff - bug 230832
* Eike Stepper - maintenance
*/
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.internal.net4j.bundle.OM;
import org.eclipse.net4j.util.om.trace.ContextTracer;
import java.io.IOException;
import java.util.List;
/**
* @author Simon McDuff
*/
public class ChangeSubscriptionRequest extends CDOClientRequest<Boolean>
{
private static final ContextTracer TRACER = new ContextTracer(OM.DEBUG_PROTOCOL, ChangeSubscriptionRequest.class);
private int viewID;
private List<CDOID> ids;
/**
* true - it will subscribe id's. <br>
* false - it will unsubscribe id's.
*/
private boolean subscribeMode;
private boolean clear;
public ChangeSubscriptionRequest(CDOClientProtocol protocol, int viewID, List<CDOID> ids, boolean subscribeMode,
boolean clear)
{
super(protocol, CDOProtocolConstants.SIGNAL_CHANGE_SUBSCRIPTION);
this.viewID = viewID;
this.ids = ids;
this.subscribeMode = subscribeMode;
this.clear = clear;
}
@Override
protected void requesting(CDODataOutput out) throws IOException
{
if (TRACER.isEnabled())
{
TRACER.trace("View " + viewID + " subscribing to " + ids.size()); //$NON-NLS-1$ //$NON-NLS-2$
}
out.writeInt(viewID);
out.writeBoolean(clear);
out.writeInt(subscribeMode ? ids.size() : -ids.size());
for (CDOID id : ids)
{
out.writeCDOID(id);
}
}
@Override
protected Boolean confirming(CDODataInput in) throws IOException
{
return in.readBoolean();
}
}
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