SOA Messaging Reliability through JMS and Oracle Service Bus by Sebastian Lik-Keung Ma

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This article describes the design of a reliable messaging solution for SOA integration projects. It uses concepts like canonical schemas, durable POJO (Plain Old Java Object) messages, publish-subscribe and error handling within the Oracle SOA, Oracle Service Bus and WebLogic JMS infrastructure.

The JMS Message

For consistency, the type of message we are publishing will be based on a canonical schema. Typically, you would have a JDeveloper project that stores the canonical schemas used by all your custom applications. These schemas could be version-controlled, e.g. by Subversion, as well as deployed to MDS as a SOA bundle. Sample JDeveloper project containing canonical schemas shown below.

In this article, we will use the employeeWorkSchedule schema as our message type.

Publishing JMS message from ADF Java application

We publish our message to JMS from ADF applications. To simplify the process of using Java to construct message objects based on our XSD canonical schema, we use the JAXB (Java Architecture for XML Binding) tool from JDeveloper.

As shown in Figure 2a below, select the XSD file, right-click and select “Generate JAXB 2.0 Content Model”. Read the complete article here.

SOA & BPM Partner Community

For regular information on Oracle SOA Suite become a member in the SOA & BPM Partner Community for registration please visit www.oracle.com/goto/emea/soa (OPN account required) If you need support with your account please contact the Oracle Partner Business Center.

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About Jürgen Kress
As a middleware expert Jürgen works at Oracle EMEA Alliances and Channels, responsible for Oracle’s EMEA Fusion Middleware partner business. He is the founder of the Oracle SOA & BPM and the WebLogic Partner Communities and the global Oracle Partner Advisory Councils. With more than 5000 members from all over the world the Middleware Partner Community is the most successful and active community at Oracle. Jürgen manages the community with monthly newsletters, webcasts and conferences. He hosts his annual Fusion Middleware Partner Community Forums and the Fusion Middleware Summer Camps, where more than 200 partners get product updates, roadmap insights and hands-on trainings. Supplemented by many web 2.0 tools like twitter, discussion forums, online communities, blogs and wikis. For the SOA & Cloud Symposium by Thomas Erl, Jürgen is a member of the steering board. He is also a frequent speaker at conferences like the SOA & BPM Integration Days, JAX, UKOUG, OUGN, or OOP.

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