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From Guillaume Déflache (JIRA) <j...@apache.org>
Subject [jira] Commented: (JELLY-163) Allow Expressions to throw exceptions
Date Sun, 06 Sep 2009 05:19:57 GMT

    [ https://issues.apache.org/jira/browse/JELLY-163?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12751827#action_12751827
] 

Guillaume Déflache commented on JELLY-163:
------------------------------------------

AFAICS this was fixed (on trunk only ATM) as part of JELLY-286.
Also "Affects Version/s" field is wrong, since this also happens in 1.0 and anyway 1.1-beta-1
was never publicly released AFAIK.
And FWIW I fully agree with Paul, see http://mail-archives.apache.org/mod_mbox/commons-user/200908.mbox/%3C4A9699D7.6080702@wyona.com%3E
for details.


> Allow Expressions to throw exceptions
> -------------------------------------
>
>                 Key: JELLY-163
>                 URL: https://issues.apache.org/jira/browse/JELLY-163
>             Project: Commons Jelly
>          Issue Type: Improvement
>          Components: core / taglib.core
>    Affects Versions: 1.1-beta-1
>            Reporter: Hans Gilde
>
> Per a recent email from Paul Libbrecht, we should allow expressions to throw an exception.
Currently, the Expression interface doesn't throw exceptions.
> Issues:
> * currently, the script evaluation isn't terminated because of an expression exception.
should it be? by default, I mean. could this be another flag in the environment?
> * should the tag itself be given a way to intercept exceptions from Expressions? Expressions
are evaluated before the tag is run, so it normally wouldn't know anything about them.
> Email from Paul Libbrecht [paul@dfki.de]:
> ~~~~~~~~~~~~~~~~~~~~~~~~
> Hi,
> One of the most frustrating place in jelly, to my taste, is when a jexl exception occurs...
Jelly complains (at least with good logging
> settings) but does not throw. Moreover, this complaint doesn't have a jelly line-number
which makes it somewhat hard.
> Is there really any wish that such an exception is not thrown ?
> thanks
> paul
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~

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