[jira] [Created] (JENA-1204) Independently Configurable BulitinRegistry for Jena Rules Engine

["Paul Houle (JIRA)" <ji...@apache.org>]

Paul Houle created JENA-1204:
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             Summary: Independently Configurable BulitinRegistry for Jena Rules Engine
                 Key: JENA-1204
                 URL: https://issues.apache.org/jira/browse/JENA-1204
             Project: Apache Jena
          Issue Type: Bug
          Components: Jena
    Affects Versions: Jena 3.1.1
         Environment: any
            Reporter: Paul Houle


An appealing case for the Jena Rules Engine is to use rules to trigger a set of actions in the rule heads that create side effects in the Java Universe:  consider (1) constructing and populating Java data structures in the rule head,  and (2) use of the rules engine in a "reactive" scenario where changes in the outside world are inserted into the graph as facts,  triggering actions on a distributed system in the heads.

In cases like this,  the creation of a new set of built-ins could occur somewhat frequently so efficiency matters here so I don't like the idea of this registered in some central registry so that we can pass in the built-in parameter with the resource to the factory,  so the advised method for configuration is to add a setter on the GenericRuleReasoner,  The only concern I have is "order-of-operations" involving initialization,  etc.



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