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List:       jakarta-commons-dev
Subject:    [jira] [Commented] (SCXML-114) Support for JEXL2
From:       "Woonsan Ko (JIRA)" <jira () apache ! org>
Date:       2013-10-31 23:35:17
Message-ID: JIRA.12443351.1260871313913.4359.1383262517254 () arcas
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    [ https://issues.apache.org/jira/browse/SCXML-114?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13810862#comment-13810862 \
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Woonsan Ko commented on SCXML-114:
----------------------------------

Hi Henri,

Currently we have a singleton JexlEngine instance in JexlEvaluator and the singleton \
is initialized in static block. This seems to bring a limitation because the static \
singleton instance is not so flexible and controllable. Also, I've just realized that \
JexlEvaluator itself is thread-safe, and so someone can use it as singleton instead. \
This way, I think we can keep it more flexible and fulfills more use cases. \
Therefore, I'd like to change the JexlEngine instance from static member to instance \
member, assuming it's up to those who creates SCXMLExecutor to decide whether the \
JexlEvaluator should be singleton or not. What do you think?

Regards,

Woonsan

P.S. I created another issue, SCXML-175, because I want to give more freedom to add \
namespaced functions in JEXL expressions/scripts. If we don't have to keep it as \
singleton any more, we can easily improve SCXML-175.

> Support for JEXL2
> -----------------
> 
> Key: SCXML-114
> URL: https://issues.apache.org/jira/browse/SCXML-114
> Project: Commons SCXML
> Issue Type: Improvement
> Reporter: Henri Biestro
> Assignee: Woonsan Ko
> Fix For: 2.0
> 
> Attachments: SCXML-114.patch, SCXML-114.patch
> 
> 
> JEXL 2.0 release being (hopefully) soon, it may make sense to use it instead of \
> JEXL 1.1.



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