coseventchanneladmin(3erl) [linux man page]

CosEventChannelAdmin(3erl)				     Erlang Module Definition					CosEventChannelAdmin(3erl)

NAME

       CosEventChannelAdmin  -	The CosEventChannelAdmin defines a set if event service interfaces that  enables decoupled asynchronous communica-
       tion between objects and implements generic (untyped) version of the OMG COSS standard event service.

DESCRIPTION

       The event service defines two roles for objects: the supplier role and the consumer role. Suppliers supply event data to the event  channel
       and  consumers  receive event data from the channel. Suppliers do not need to know the identity of the consumers, and vice versa. Consumers
       and suppliers are connected to the event channel via proxies, which are managed by ConsumerAdmin and SupplierAdmin objects.

       There are four general models of communication. These are:

	 * The canonical push model. It allows the suppliers of events to initiate the transfer of event data to consumers.  Event  channels  play
	   the role of Notifier . Active suppliers use event channel to push data to passive consumers registered with the event channel.

	 * The canonical pull model. It allows consumers to request events from suppliers. Event channels play the role of Procure since they pro-
	   cure events on behalf of consumers. Active consumers can explicitly pull data from passive suppliers via the event channels.

	 * The hybrid push/pull model. It allows consumers request events queued at a channel by suppliers. Event channels play the role of  Queue
	   . Active consumers explicitly pull data deposited by active suppliers via the event channels.

	 * The	hybrid	pull/push  model.  It allows the channel to pull events from suppliers and push them to consumers. Event channels play the
	   role of Intelligent agent . Active event channels can pull data from passive suppliers to push it to passive consumers.

       To get access to all definitions, e.g., exceptions, include necessary hrl files by using:
       -include_lib("cosEvent/include/*.hrl").

       There are seven different interfaces supported in the service:

	 * ProxyPushConsumer

	 * ProxyPullSupplier

	 * ProxyPullConsumer

	 * ProxyPushSupplier

	 * ConsumerAdmin

	 * SupplierAdmin

	 * EventChannel

Ericsson AB							  cosEvent 2.1.10					CosEventChannelAdmin(3erl)

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CosEventChannelAdmin_ProxyPushSupplier(3erl)		     Erlang Module Definition		      CosEventChannelAdmin_ProxyPushSupplier(3erl)

NAME

       CosEventChannelAdmin_ProxyPushSupplier  -  This module implements a ProxyPushSupplier interface which acts as a middleman between push con-
       sumer and the event channel.

DESCRIPTION

       The ProxyPushSupplier interface defines the second step for connecting push consumers to the event channel. A proxy supplier is similar	to
       a normal supplier, but includes an additional method for connecting a consumer to the proxy supplier.

       To get access to all definitions, e.g., exceptions, include necessary hrl files by using:
       -include_lib("cosEvent/include/*.hrl").

       Any object that possesses an object reference that supports the ProxyPushSupplier interface can perform the following operations:

EXPORTS

       connect_push_consumer(Object, PushConsumer) -> Return

	      Types  Object = #objref
		     PushConsumer = #objref of PushConsumer type
		     Return = ok | {'EXCEPTION', E}
		     E = #'CosEventChannelAdmin_AlreadyConnected'{} | #'CosEventChannelAdmin_TypeError'{}

	      This  operation  connects  PushConsumer  object  to the ProxyPushSupplier object. If a nil object reference is passed CORBA standard
	      BAD_PARAM exception is raised. If the ProxyPushSupplier  is  already  connected  to  a  PushConsumer,  then  the	CosEventChannelAd-
	      min_AlreadyConnected  exception  is raised. Implementations of ProxyPushSuppliers may require additional interface functionality; if
	      these requirements are not met the CosEventChannelAdmin_TypeError exception will be raised.

       disconnect_push_supplier(Object) -> Return

	      Types  Object = #objref
		     Return = ok

	      This operation disconnects proxy push supplier from the event channel and sends a notification about the loss of the  connection	to
	      the push consumer attached to it.

Ericsson AB							  cosEvent 2.1.10		      CosEventChannelAdmin_ProxyPushSupplier(3erl)

Linux and UNIX Man Pages

coseventchanneladmin(3erl) [linux man page]

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