Creating a subscription notifier implementation class

Your subscription notifier implementation class contains code that processes event notifications that have been triggered from a WSRR Subscription object.

1. Open your chosen Java™ development tooling environment.
2. Create a new Java project, with a name of your choice.
3. Add ServiceRegistryClient.jar to the project build path. ServiceRegistryClient.jar is located in the <WSRR_HOME> directory; this is the directory in which you installed the WSRR files.
4. Create a Java class that implements the com.ibm.serviceregistry.subscriptionnotifier.Plugin interface.
5. Implement the following methods, to define the actions that your subscription notifier implementation class performs:

   Method	Description
   public boolean processEvent(SubscriptionNotifierEvent event);	Process an event from the WSRR JMS subscription queue, in non-batch mode.
   public boolean processEvents(SubscriptionNotifierEvent[] events);	Process events from the WSRR jms subscription queue, in batch mode; that is, multiple messages.
   public void release();	Release system resources held by the plug-in after events have been processed.
   public void updateConfig(SubscriptionNotifierPluginConfigObject pluginConfig);	Update the plug-in configuration after a configuration change.
   public String validateConfig(SubscriptionNotifierPluginConfigObject pluginConfig);	Validate the configuration data associated with this plug-in class.
   public boolean supportsBatchNotify();	Determine whether the plug-in supports batch notification; that is, the processEvents() method.

6. Export your project to a JAR file.
7. Load your JAR file into WSRR; see Loading a subscription notifier JAR file.