coseventchanneladmin_eventchannel(3erl) [linux man page]
CosEventChannelAdmin_EventChannel(3erl) Erlang Module Definition CosEventChannelAdmin_EventChannel(3erl) NAME
CosEventChannelAdmin_EventChannel - This module implements an Event Channel interface, which plays the role of a mediator between con- sumers and suppliers. DESCRIPTION
An event channel is an object that allows multiple suppliers to communicate with multiple consumers in a highly decoupled, asynchronous manner. The event channel is built up incrementally. When an event channel is created no suppliers or consumers are connected to it. Event Channel can implement group communication by serving as a replicator, broadcaster, or multicaster that forward events from one or more sup- pliers to multiple consumers. It is up to the user to decide when an event channel is created and how references to the event channel are obtained. By representing the event channel as an object, it has all of the properties that apply to objects. One way to manage an event channel is to register it in a naming context, or export it through an operation on an object. To get access to all definitions include necessary hrl files by using: -include_lib("cosEvent/include/*.hrl"). Any object that possesses an object reference that supports the ProxyPullConsumer interface can perform the following operations: EXPORTS
for_consumers(Object) -> Return Types Object = #objref Return = #objref This operation returns a ConsumerAdmin object reference. If ConsumerAdmin object does not exist already it creates one. for_suppliers(Object) -> Return Types Object = #objref Return = #objref This operation returns a SupplierAdmin object reference. If SupplierAdmin object does not exist already it creates one. destroy(Object) -> Return Types Object = #objref Return = #objref Ericsson AB cosEvent 2.1.10 CosEventChannelAdmin_EventChannel(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)