Pavel Mikhailovskii created JENA-1951:
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             Summary: Add support for 
                 Key: JENA-1951
                 URL: https://issues.apache.org/jira/browse/JENA-1951
             Project: Apache Jena
          Issue Type: Task
            Reporter: Pavel Mikhailovskii


It's already possible to use user-defined JavaScript functions in SPARQL 
queries. This feature can be extended to support all scripting languages 
available via generic Java Scripting API (JSR-223).  This would require a 
generic way of configuring scripting engines and accessing functions defined in 
them, potentially allowing mixing functions defined in different languages in 
one SPARQL query. Besides the GraalVM-powered JavaScript engine (see 
[JENA-1950|https://issues.apache.org/jira/browse/JENA-1950]) none of scripting 
engines will be bundled by default. They can be enabled by simply adding the 
corresponding packages to the class path.



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