package org.jacorb.test.notification;
import org.omg.CORBA.Any;
import org.omg.CORBA.BooleanHolder;
import org.omg.CORBA.ORB;
import org.omg.CosEventChannelAdmin.AlreadyConnected;
import org.omg.CosEventChannelAdmin.EventChannel;
import org.omg.CosEventChannelAdmin.EventChannelHelper;
import org.omg.CosEventChannelAdmin.ProxyPullConsumer;
import org.omg.CosEventChannelAdmin.SupplierAdmin;
import org.omg.CosEventChannelAdmin.TypeError;
import org.omg.CosEventComm.Disconnected;
import org.omg.CosEventComm.PullSupplierPOA;
import edu.emory.mathcs.backport.java.util.concurrent.CountDownLatch;
/**
* @author Alphonse Bendt
* @version $Id$
*/
public class CosEventPullSender extends PullSupplierPOA implements TestClientOperations, Runnable
{
Any event_;
Any invalidAny_;
ProxyPullConsumer myConsumer_;
CountDownLatch latch_ = new CountDownLatch(1);
private boolean connected_;
private boolean error_;
private boolean sent_;
private final ORB orb_;
CosEventPullSender(ORB orb, Any event)
{
event_ = event;
orb_ = orb;
}
public void run()
{
try
{
latch_.await();
} catch (InterruptedException ie)
{
// ignored
}
}
public Any pull() throws Disconnected
{
BooleanHolder _b = new BooleanHolder();
Any _event;
while (true)
{
_event = try_pull(_b);
if (_b.value)
{
return _event;
}
Thread.yield();
}
}
public Any try_pull(BooleanHolder success) throws Disconnected
{
Any _event = invalidAny_;
success.value = false;
if (event_ != null)
{
synchronized (this)
{
if (event_ != null)
{
_event = event_;
event_ = null;
success.value = true;
sent_ = true;
latch_.countDown();
}
}
}
return _event;
}
public void disconnect_pull_supplier()
{
connected_ = false;
}
public boolean isConnected()
{
return connected_;
}
public boolean isEventHandled()
{
return sent_;
}
public boolean isError()
{
return error_;
}
public void shutdown()
{
myConsumer_.disconnect_pull_consumer();
}
public void connect(org.omg.CosNotifyChannelAdmin.EventChannel channel, boolean useOrSemantic)
throws AlreadyConnected, TypeError
{
invalidAny_ = orb_.create_any();
EventChannel _channel = EventChannelHelper.narrow(channel);
SupplierAdmin _admin = _channel.for_suppliers();
myConsumer_ = _admin.obtain_pull_consumer();
myConsumer_.connect_pull_supplier(_this(orb_));
connected_ = true;
}
}