ColdFusion provides two classes that you can use as building blocks to develop your event gateway classes. Each corresponds to a different development methodology:
ColdFusion MX includes a coldfusion.eventgateway.GenericGateway abstract class that implements many of the methods of ColdFusion Gateway interface and provides some convenience methods for use in your gateway class.
You can derive your gateway class from this class, which handles the basic mechanics of implementing a gateway, such as the getGatewayID and SetCFCListeners methods. Your derived class must implement at least the following methods:
startGateway (not start)
stopGateway (not stop)
outgoingMessage
Your derived gateway class also must implement the following:
getHelper method.
getStatus method.
The example JMS gateway is derived from the generic gateway class. The gateway class JavaDocs in the gateway\docs directory provide documentation for this class. (The CFML Reference does not document this class.)
The gateway\src\examples\EmptyGateway.java file contains an event gateway template that you can use as a skeleton for creating your own event gateway. (The gateway directory is in the cf_root directory in the server configuration and the cf_root\WEB-INF-cfusion directory on J2EE configurations.) This file contains minimal versions of all methods in the coldfusion.eventgateway.Gateway interface. It defines a skeleton listener thread and initializes commonly used Gateway properties. The EmptyGateway source code includes comments that describe the additional information that you must provide to complete an event gateway class.