Polling Notification Implementation
The tasks for implementing a polling notification are as follows:

Defining a
WmPollingNotification Implementation Class

Specifying Configuration Metadata for Polling Notifications

Implementing Configuration Resource Domains for Polling Notifications

Specifying Notification Signatures (Document Type)

Manipulating Adapter Notification Document Properties

Implementing Signature Resource Domains

Implementing the
WmPollingNotification.runNotification Method and Callbacks

Updating the Resource Bundle

Registering Polling Notifications in the Adapter

Compiling the Adapter

Reloading Adapter

Refreshing the
Designer cache

Configuring and Testing Polling Notification Nodes
The example polling notification implementation monitors the contents of a directory and sends notifications when files are added to, or removed from the directory. Although this example is very simple, it demonstrates most of the notification capabilities, except for callbacks.
Note:
This example implements a design strategy that enables you to encapsulate the resource domain support inside an adapter service or notification. This strategy is discussed in . You do not need to fully understand this strategy to understand the example code. However, if you are uncomfortable with this strategy, you may implement those methods in your connection implementation. You will have to adjust the method signatures and the "this" references appropriately. The "this" reference refers to the notification. If you move the methods to the connection, then the "this" refers to the connection.