Simple Web services use pattern

In this use pattern WebSphere® Application Server is used solely as a notification broker to enable producing and consuming WS-Notification applications to communicate with each other. The applications are unaware that the NotificationBroker service is implemented by WebSphere Application Server.

In the following figure, a Publisher, Subscriber and a NotificationConsumer all connect to a NotificationBroker using SOAP over HTTP. The Publisher, Subscriber and Notification consumer are unaware that the broker is backed by WebSphere Application Server.

This figure is described in the surrounding text.

The following diagram illustrates the variety of clients that are able to connect to the notification broker provided by WebSphere Application Server. Any Web service client that implements or invokes the WS-Notification message exchanges can connect. This includes the various types of Web service clients that are supported directly by WebSphere Application Server (such as JAX-RPC, JSR172, JSR101) and other Web service clients that are capable of using JAX-RPC patterns (for example .NET).

In this figure, a J2EE Publisher, a JSR172 Publisher, a JSR101 Publisher and a .NET Publisher, connect to a NotificationBroker.

In this use pattern, it is possible that none of the clients of the notification broker are written or hosted in a WebSphere Application Server environment, as shown in the following diagram. Note that the notification broker itself cannot determine the environment from which the clients connect because the only interaction is through the standard Web service exchanges defined by WS-Notification.

In this figure, a non-IBM notification producer notifies the NotificationBroker. Consequently a non-IBM notification consumer is notified as the result of a subscription.

Similarly, WS-Notification applications written or hosted in a WebSphere Application Server environment (such as JAX-RPC from AppClient, JSR172, JSR101) can connect to non-IBM NotificationBrokers (or NotificationProducers) without any changes to the application code.




Related concepts
Learning about WS-Notification
WS-Notification use patterns
Related tasks
Configuring a WS-Notification service for use only by WS-Notification applications
WS-Notification - publish and subscribe messaging for Web services
Securing WS-Notification
Related reference
WS-Notification roles and goals
WS-Notification troubleshooting tips
Concept topic Concept topic    

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Last updatedLast updated: Aug 30, 2013 8:21:57 PM CDT
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