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From "Woonsan Ko (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (SCXML-99) Support read-only system variables
Date Thu, 09 Apr 2015 13:49:12 GMT

     [ https://issues.apache.org/jira/browse/SCXML-99?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Woonsan Ko updated SCXML-99:
----------------------------
    Summary: Support read-only system variables  (was: support read-only system variables)

> Support read-only system variables
> ----------------------------------
>
>                 Key: SCXML-99
>                 URL: https://issues.apache.org/jira/browse/SCXML-99
>             Project: Commons SCXML
>          Issue Type: Bug
>    Affects Versions: 0.9
>            Reporter: Ingmar Kliche
>            Assignee: Ate Douma
>             Fix For: 2.0
>
>
> The SCXML WD [1] describes a set of system variables which are read-only for the application.
See section 5.5 [2]: "The Data Module maintains a protected portion of the data model containing
information that may be useful to applications...."
> It may necessary to abstract out the notion of a partitioned root context, just like
we have a notion of ordinary context.
> The implementation should take into account, that some expression languages support read-only
behaviors natively (such as ECMAScript through scope chains), whereas other expression languages
(or there implementations resp.) don't. 
> [1] http://www.w3.org/TR/2008/WD-scxml-20080516/
> [2] http://www.w3.org/TR/2008/WD-scxml-20080516/#SystemVariables



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