JRas Extensions

JRas extensions are the collection of implementation classes that support JRas integration into the WebSphere Application Server environment.

JRas extensions

The JRas framework described in this task and its sub-tasks is deprecated. However, we can achieve similar results using Java logging.

The stand-alone JRas logging toolkit defines interfaces and provides a variety of concrete classes that implement these interfaces. Because the stand-alone JRas logging toolkit is developed as a general purpose toolkit, the implementation classes do not contain the configuration interfaces and methods that are necessary for use in the WAS product. In addition, many of the implementation classes are not written appropriately for use in a J2EE environment. To overcome these shortcomings, WAS provides the appropriate implementation classes that support integration into the WAS environment. The collection of these implementation classes is referred to as the JRas extensions.

Usage model

Use the JRas extensions in three distinct operational modes:

Integrated

In this mode, message and trace records are written only to logs defined and maintained by the WAS run time. This mode is the default mode of operation and is equivalent to the WAS V4.0 mode of operation.

Stand-alone

In this mode, message and trace records are written solely to stand-alone logs defined and maintained by the user. You control which categories of events are written to which logs, and the format in which entries are written. We are responsible for configuration and maintenance of the logs. Message and trace entries are not written to WAS runtime logs.

Combined

In this mode, message and trace records are written to both WAS runtime logs and to stand-alone logs that define, control, and maintain. Use filtering controls to determine which categories of messages and trace are written to which logs.

The JRas extensions are specifically targeted to an integrated mode of operation. The integrated mode of operation can be appropriate for some usage scenarios, but many scenarios are not adequately addressed by these extensions. Many usage scenarios require a stand-alone or combined mode of operation instead. A set of user extension points are defined that support JRas extensions in either a stand-alone or combined mode of operations.

Programming with the JRas framework