Notification Service
The OMG Notification Service extends the asynchronous message exchange of the Event Service and allows multiple event suppliers to send events to multiple event consumers. Similar in many respects to JMS, the Notification Service supports both the push and pull models and allows event channels to be federated without the use of intermediators. In addition, the Notification Service allows clients to specify exactly which events they are interested in receiving by attaching filters to each proxy in an event channel. Finally, the Notification Service provides mechanisms to configure various QoS properties on a per-channel, per-proxy, or per-event basis.
The CORBA Notification service uses the
StructuredEvent class to represent its messages.
In addition, it contains the EventChannel and
EventType classes, which are analogous to the
Queue and Topic classes of JMS.
It also uses the StructuredPushConsumer and
StructuredPushSupplier classes for its message
consumer and producer objects, respectively.
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