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Chapter 17. The Java Rule Engine Application Programming Interface
17.1. JSR94
JSR94 is an API used in JBoss Rules. It allows for support of multiple rule engines from a single API. JSR94 does not deal in any way with the rule language itself.
The JSR94 standard represents the "least common denominator" in features across rule engines. This means that there is less functionality in the JSR94 API than in the standard Knowledge API. By using JSR94, you cannot use all the capabilities of JBoss Rules. You should use globals and support for DRL, DSL and XML, via property maps in conjunction with JSR94. This introduces non-portable functionality.
Note
As JSR94 does not provide a rule language, you are only solving a small fraction of the complexity of switching rule engines with very little gain. Red Hat recommends you program against the Knowledge (JBoss Rules and jBPM) API.
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