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Patterns Designed to Deliver the Message


New IBM offerings aim to help with building, managing an enterprise service bus

By Jennifer deJong
September 1, 2005 — 
IBM has designed six new messaging patterns that may eventually make their way into its software development platform.

The company released on its developerWorks resource site last month WebSphere Platform Messaging Patterns Asset. The set of six patterns takes advantage of the messaging engine included in WebSphere Application Server 6.0 to provide an easier way to build, configure and manage an enterprise service bus, said Angel Diaz, IBM’s director of on-demand development.

Essentially a means of imparting best practices, patterns are reusable assets that allow one developer to successfully repeat a design that already has been built by another. They aim to provide solutions to recurring problems that developers face, such as how an application gets to a database, or how it locks out resources, explained Grant Larsen, a model-driven development specialist at IBM.

Patterns often take the form of paper-based designs. But because the new messaging patterns are aimed at software architects modeling the messaging piece of an application, they have been encoded as models based on the Unified Modeling Language, he said. There are patterns for JMS message handling, message logging, XSLT transformation, event sequencing and for configuring bus and JMS resources on WebSphere Application Server 6.0, according to IBM’s site.

Because the UML-based patterns are designed to be used in Rational Software Architect (part of the role-based Rational Software Development Platform), they can generate code, which developers can incorporate in an application, Larsen said.

To access the patterns, developers can download Rational Software Architect (www.ibm.com/developerworks/downloads/r/rswa) and connect to the Rational XDE Repository.


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