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/**
* Copyright (c) 2004 - 2011 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:
* Caspar De Groot - initial API and implementation
*/
package org.eclipse.emf.cdo.server.internal.net4j.protocol;
import org.eclipse.emf.cdo.common.branch.CDOBranch;
import org.eclipse.emf.cdo.common.id.CDOID;
import org.eclipse.emf.cdo.common.id.CDOIDUtil;
import org.eclipse.emf.cdo.common.lock.CDOLockState;
import org.eclipse.emf.cdo.common.lock.CDOLockUtil;
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.server.IView;
import org.eclipse.emf.cdo.spi.server.InternalLockManager;
import org.eclipse.emf.cdo.spi.server.InternalView;
import org.eclipse.net4j.util.concurrent.RWOLockManager.LockState;
import java.io.IOException;
/**
* @author Caspar De Groot
*/
public class LockStateIndication extends CDOServerReadIndication
{
private CDOLockState[] cdoLockStates;
public LockStateIndication(CDOServerProtocol protocol)
{
super(protocol, CDOProtocolConstants.SIGNAL_LOCK_STATE);
}
@Override
protected void indicating(CDODataInput in) throws IOException
{
int viewID = in.readInt();
InternalView view = getSession().getView(viewID);
if (view == null)
{
throw new IllegalStateException("View not found");
}
InternalLockManager lockMgr = getRepository().getLockManager();
int n = in.readInt();
cdoLockStates = new CDOLockState[n];
for (int i = 0; i < n; i++)
{
Object key = indicatingCDOID(in, view.getBranch());
LockState<Object, IView> lockState = lockMgr.getLockState(key);
if (lockState != null)
{
cdoLockStates[i] = CDOLockUtil.createLockState(lockState);
}
else
{
cdoLockStates[i] = CDOLockUtil.createLockState(key);
}
}
}
private Object indicatingCDOID(CDODataInput in, CDOBranch viewedBranch) throws IOException
{
CDOID id = in.readCDOID();
if (getRepository().isSupportingBranches())
{
return CDOIDUtil.createIDAndBranch(id, viewedBranch);
}
return id;
}
@Override
protected void responding(CDODataOutput out) throws IOException
{
out.writeInt(cdoLockStates.length);
for (CDOLockState lockState : cdoLockStates)
{
out.writeCDOLockState(lockState);
}
}
}
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