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From "Rahul Akolkar (JIRA)" <j...@apache.org>
Subject [jira] Updated: (SCXML-26) Add parameter to Evaluator.newContext
Date Mon, 02 Oct 2006 15:52:24 GMT
     [ http://issues.apache.org/jira/browse/SCXML-26?page=all ]

Rahul Akolkar updated SCXML-26:
-------------------------------

    Fix Version/s: 1.0

Conceptually, there is a 1:1 mapping between contexts and targets, as established by the executor
instance, which picks the target for the new context.

This is a major change request (anytime a change is requested to an interface which is part
of the component's public API), so it definitely won't happen before a 1.0 release (and even
if it happens at a 1.0, might require a subinterface and fancy footwork in code) -- so we'll
need to have quite a compelling argument, thats unclear to me at the moment.



> Add parameter to Evaluator.newContext
> -------------------------------------
>
>                 Key: SCXML-26
>                 URL: http://issues.apache.org/jira/browse/SCXML-26
>             Project: Commons SCXML
>          Issue Type: Improvement
>    Affects Versions: 0.5
>            Reporter: Hallvard Trætteberg
>             Fix For: 1.0
>
>
> The Evaluator.newContext method currently takes one argument, the parent context. However,
to make it easier for the context to link to relevant application data, it would be nice if
it also took a TransitionTarget argument, i.e. have the signature     public Context newContext(TransitionTarget
target, Context parent); By including the target in the context, it becomes easier for expressions
to refer to contextual data. In my case, SCXML is used together with data bindings, and expressions
are used to refer to data in the context of states and transitions. I had to modify SCXML
as suggested above, to provide the link between state and data bindings.

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