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/**
* Copyright (c) 2004 - 2010 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
* Eike Stepper - maintenance
*/
package org.eclipse.emf.cdo.server.internal.net4j.protocol;
import org.eclipse.emf.cdo.common.io.CDODataInput;
import org.eclipse.emf.cdo.common.io.CDODataOutput;
import org.eclipse.emf.cdo.common.protocol.CDOProtocolConstants;
import org.eclipse.emf.cdo.server.internal.net4j.bundle.OM;
import org.eclipse.net4j.util.om.trace.ContextTracer;
import java.io.IOException;
/**
* @author Simon McDuff
*/
public class QueryCancelIndication extends CDOReadIndication
{
private static final ContextTracer TRACER = new ContextTracer(OM.DEBUG_PROTOCOL, QueryCancelIndication.class);
private int queryID;
public QueryCancelIndication(CDOServerProtocol protocol)
{
super(protocol, CDOProtocolConstants.SIGNAL_QUERY_CANCEL);
}
@Override
protected void indicating(CDODataInput in) throws IOException
{
queryID = in.readInt();
if (TRACER.isEnabled())
{
TRACER.trace("Query " + queryID + " will be cancelled"); //$NON-NLS-1$ //$NON-NLS-2$
}
}
@Override
protected void responding(CDODataOutput out) throws IOException
{
try
{
getRepository().getQueryManager().cancel(queryID);
out.writeBoolean(false);
}
catch (Exception exception)
{
out.writeBoolean(true);
out.writeString(exception.getMessage());
}
}
}
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