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Rules 4 JBI
Business Rules Service Engine (a.k.a "rules4jbi") is a JBI (JSR 208) compliant service engine that allows to integrate a JSR 94 compliant rules engine into a JBI container and expose a deployed ruleset as a stateless service within the JBI environment. The accompanied NetBeans plugins allow for easy creation of the deployment artifacts and integrate well with the rest of the NetBeans SOA/enterprise pack.
This project was originally donated and is still being developed by Milan Fort.
To install the service engine into OpenESB V2/GlassFish ESB runtime, follow these steps:
To install the NetBeans tooling support, follow these steps:
Optionally, using the steps outlined above, you may want to install also the following NetBeans modules:
Please note that the NetBeans tooling support for any rules engine is out of scope of this project. These modules only plug-in JSR 94 configuration values for the respective rules engines to the rules engine configuration panel in project's properties dialog and into the new project wizard.
Rules4JBI is not a rules engine by itself and does not ship with any bundled rules engine either. Therefore, for proper operation, it requires you to install/deploy your chosen JSR 94 compliant rules engine. First, please consult your rules engine vendor's documentation to determine which jar files you need. Then, you have two options how to install/use the rules engine:
Note that you are free to combine these two approaches, e.g. you can install one version into the lib/ext folder and then deploy a different version as part of your service unit. The version bundled with the service unit will take precedence. And obviously, nothing prevents you from using different rules engines for different service units.
As of December 2008, we do not officially support or endorse any rules engine. However, the project is tested to work with Jess (the JSR 94 reference implementation), Jamocha (a CLIPS-based rules engine like Jess, but Open Source), and Drools (a.k.a JBoss Rules). We encourage other vendors of JSR 94 compliant rules engines to test their implementations against this component and report the results/problems to the users mailing list at OpenESB mailing lists.
Watch the screencast (coming soon) to see rules4jbi in action.
The Quick Start Guide contains a step-by-step explanations of what you have seen in the screencast.
SampleRules4JBIProject.zip contains the JSR 94 TCK example with Drools we have created in the Quick Start Guide. Contrary to that example, this sample project bundles Drools rules engine within the service unit, for easy, out-of-the-box experience. Please see the enclosed LICENSE.txt file for the license of Drools and its dependencies.
Steps to Use:
The current version of rules4jbi is 0.4. The project has incubator status.
Rules4JBI is open source software licensed under the Common Development and Distribution License v1.0.
Go to the OpenESB issue tracker to submit issues. Please choose Business Rules Service Engine as the subcomponent.
For questions and feedback please use the OpenESB mailing lists.