A polling notification is a facility that enables an adapter to initiate activity on Integration Server, based on events that occur in the adapter resource. A polling notification monitors an adapter resource for changes (such as an insert, update, or delete operation) so that the appropriate flow or Java services can react to the data, such as sending an invoice or publishing an invoice to Integration Server.

You create a polling notification node using Designer. You assign to the notification an adapter connection node that you created earlier.

Polling notifications cannot be directly invoked from a flow service (or from Designer). Instead, the server invokes a polling notification automatically, based on a fixed time interval. When a polling notification determines that a specified event has occurred in the adapter resource, it produces a document describing the event. These documents are automatically published to Integration Server (or webMethods Broker) as they are generated by the notification. The processing of the published document is based on triggers that are configured to invoke flow services when the given document type is published. For more information on Integration Server publishable documents, see Publish-Subscribe Developer’s Guide.