org.jacorb.events
Class ProxyPushSupplierImpl
public
class
ProxyPushSupplierImpl
extends ProxyPushSupplierPOA
Implementation of COSEventChannelAdmin interface; ProxyPushSupplier.
This defines connect_push_consumer() and disconnect_push_supplier(). Helper
method will push a method to the registered consumer.
2002/23/08 JFC OMG EventService Specification 1.1 page 2-7 states:
"Registration is a two step process. An event-generating application
first obtains a proxy consumer from a channel, then 'connects' to the
proxy consumer by providing it with a supplier. ... The reason for
the two step registration process..."
Modifications to support the above have been made as well as to support
section 2.1.5 "Disconnection Behavior" on page 2-4.
Version: $Id: ProxyPushSupplierImpl.java,v 1.8 2004/05/06 12:39:58 nicolas Exp $
Author: Jeff Carlson, Joerg v. Frantzius, Rainer Lischetzki, Gerald Brose
Constructor - to be called by EventChannel
public void connect_push_consumer(PushConsumer pushConsumer)
fuers ProxyPushSupplier Interface.
As stated by the EventService specification 1.1 section 2.3.7:
"If a ProxyPushSupplier is already connected to a PushConsumer, then the
AlreadyConnected exception is raised."
and
"Implementations shall raise the CORBA standard BAD_PARAM exception if
a nil object reference is passed to the connect_push_consumer."
public void disconnect_push_supplier()
fuers PushSupplier Interface
See EventService v 1.1 specification section 2.1.2.
'disconnect_push_supplier terminates the event communication; it releases
resources used at the supplier to support event communication. Calling
this causes the implementation to call disconnect_push_consumer operation
on the corresponding PushSupplier interface (if that iterface is known).'
See EventService v 1.1 specification section 2.1.5. This method should
adhere to the spec as it a) causes a call to the corresponding disconnect
on the connected supplier, b) 'If a consumer or supplier has received a
disconnect call and subsequently receives another disconnect call, it
shall raise a CORBA::OBJECT_NOT_EXIST exception.
protected void push_to_consumer(Any event)
Methoden, die von unserem EventChannel aufgerufen werden
public POA _default_POA()
Override this method from the Servant baseclass. Fintan Bolton
in his book "Pure CORBA" suggests that you override this method to
avoid the risk that a servant object (like this one) could be
activated by the wrong POA object.