package org.jacorb.notification.servant;
/*
* JacORB - a free Java ORB
*
* Copyright (C) 1997-2004 Gerald Brose.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the Free
* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
import org.jacorb.config.*;
import org.jacorb.notification.OfferManager;
import org.jacorb.notification.SubscriptionManager;
import org.jacorb.notification.engine.TaskProcessor;
import org.jacorb.notification.interfaces.Message;
import org.omg.CORBA.Any;
import org.omg.CORBA.BooleanHolder;
import org.omg.CORBA.ORB;
import org.omg.CORBA.UNKNOWN;
import org.omg.CosEventChannelAdmin.AlreadyConnected;
import org.omg.CosEventComm.Disconnected;
import org.omg.CosEventComm.PullConsumer;
import org.omg.CosNotifyChannelAdmin.ConsumerAdmin;
import org.omg.CosNotifyChannelAdmin.ProxyPullSupplierOperations;
import org.omg.CosNotifyChannelAdmin.ProxyPullSupplierPOATie;
import org.omg.CosNotifyChannelAdmin.ProxyType;
import org.omg.PortableServer.POA;
import org.omg.PortableServer.Servant;
/**
* @author Alphonse Bendt
* @version $Id: ProxyPullSupplierImpl.java,v 1.19 2009-05-03 21:34:47 andre.spiegel Exp $
*/
public class ProxyPullSupplierImpl
extends AbstractProxySupplier
implements ProxyPullSupplierOperations
{
private final Any sUndefinedAny;
////////////////////////////////////////
private PullConsumer pullConsumer_ = null;
////////////////////////////////////////
public ProxyPullSupplierImpl(IAdmin admin, ORB orb, POA poa, Configuration config, TaskProcessor taskProcessor, OfferManager offerManager, SubscriptionManager subscriptionManager, ConsumerAdmin consumerAdmin)
throws ConfigurationException
{
super(admin, orb, poa, config, taskProcessor, offerManager, subscriptionManager, consumerAdmin);
sUndefinedAny = orb.create_any();
}
public ProxyType MyType()
{
return ProxyType.PULL_ANY;
}
public void disconnect_pull_supplier()
{
destroy();
}
protected void disconnectClient()
{
if (pullConsumer_ != null)
{
logger_.info("disconnect any_pull_consumer");
pullConsumer_.disconnect_pull_consumer();
pullConsumer_ = null;
}
}
public Any pull() throws Disconnected
{
checkStillConnected();
try
{
Message _event = getMessageBlocking();
try
{
return _event.toAny();
}
finally
{
_event.dispose();
}
}
catch (InterruptedException e)
{
logger_.error("interrupted", e);
throw new UNKNOWN();
}
}
public Any try_pull(BooleanHolder hasEvent) throws Disconnected
{
checkStillConnected();
hasEvent.value = false;
Message _message = getMessageNoBlock();
if (_message != null)
{
try
{
hasEvent.value = true;
return _message.toAny();
}
finally
{
_message.dispose();
}
}
return sUndefinedAny;
}
public void connect_any_pull_consumer(PullConsumer consumer) throws AlreadyConnected
{
logger_.info("connect any_pull_consumer");
checkIsNotConnected();
pullConsumer_ = consumer;
connectClient(consumer);
}
public void enableDelivery()
{
// as delivery to this PullSupplier causes no remote calls
// we can ignore this
}
public void disableDelivery()
{
// as delivery to this PullSupplier causes no remote calls
// we can ignore this
}
public void deliverPendingData()
{
// as we do not actively deliver events we can ignore this
}
public Servant newServant()
{
return new ProxyPullSupplierPOATie(this);
}
protected long getCost()
{
return 0;
}
}