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http://issues.apache.org/struts/browse/WW-1566?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_39249
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Tom Schneider commented on WW-1566:
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I was digging through the xwork source code a bit to see how feasible this
would be. It looks like most of the valuestack stuff has been abstracted away
in struts2 itself, so most of the work would have to happen in xwork2. As I
see it, the general approach to doing this would be look at what we're doing
with ognl, then abstract it away into an interface(s) then implement in terms
of that interface. (There really isn't that much to Ognl so I'm hoping this
wouldn't be too involved) I'll be digging into this a bit--if I come up with
an interface that would work, I'll post it.
> Switchable Expression Languages
> -------------------------------
>
> Key: WW-1566
> URL: http://issues.apache.org/struts/browse/WW-1566
> Project: Struts 2
> Issue Type: New Feature
> Reporter: Don Brown
> Fix For: Future
>
>
> It would be nice to be able to swap out the expression language used in
> Struts 2 through a Struts 2 plugin. This could be used, for example, to swap
> OGNL for MVEL or JSP EL.
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