Peter David Niblett

Events and service-oriented architecture: the OASIS web services notification specifications

The OASIS Web Services Notification (WSN) family of specifications defines a standard interoperable protocol through which Web services can disseminate events. We present here a summary of three WSN specification documents that are currently available: WS-Base Notification, WS-Topics, and WS-Brokered Notification. We conclude with a brief discussion on the use of the notification pattern in the Enterprise Services Bus, a service-oriented infrastructure for mediating requests among cooperating Web services.

Container-managed messaging: an architecture for integrating Java components and message-oriented applications

Container-managed messaging (CMM) allows a Java component to communicate via messaging without having to manage the messaging infrastructure, similarly to how container-managed persistence (CMP) allows an EJB (Enterprise JavaBean) to have persistent data without managing access to a data store. In addition, messaging parameters (such as destinations, mode of interaction, time-outs, etc.) can be defined declaratively in a deployment descriptor. The programming model used in CMM resembles that of CORBA messaging with the exception that it is in an anonymous and declarative fashion.