Re: [e4-dev] Integration of Scripting Languages

[Hallvard Trætteberg <hal@xxxxxxxxxxx>]

Tom Schindl wrote:
> This way not only JavaScript (mostlikely the Rhino implementation) can
> be used to create and run scripts for Java applications and Java
> frameworks, but *any* of the many scripting languages for which script
> engines have been written for BSF 3.0/"javax.script" and listed e.g. at
> <https://scripting.dev.java.net/> with no real additional effort on the
> side of the Java application and framework implementors.
>
> ...
>
> What I'd like to propose is that instead of using Rhino-Directly in
> JSContributionFactory to go through the BSF and hence support various
> scripting frameworks out of the box.

I completely agree that we should go through javax.scripting/Apache BSF 
for basic scripting support.

Still, we should remember that there are different levels of integration 
desired, that may require language-specific integration. With 
javax.scripting you can execute scripts in a scope, lookup variables in 
a scope, etc. Often you want to go further than that, by exploiting 
specific language features. E.g. in the Javascript support for EMF a 
richer API is provided that exploits Javascript's function objects.

Hallvard