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Posted to dev@commons.apache.org by "Rahul Akolkar (JIRA)" <ji...@apache.org> on 2006/10/02 17:52:24 UTC
[jira] Updated: (SCXML-26) Add parameter to Evaluator.newContext
[ 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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