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https://issues.apache.org/jira/browse/JEXL-255?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16385649#comment-16385649
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Dmitri Blinov commented on JEXL-255:
------------------------------------
The test code I'm using is like this
{code}
@timeout(5) {sleep(10000); return 0}; return 42
{code}
At the moment the code returns neither 0 nor 42, but throws
{{JexlException.Cancel}}
The {{Context.processAnnotation()}} code correctly catches
{{JexlException.Cancel}}
exception that was thrown during {{sleep()}} invocation, and then returns null,
since it was a timeout; The script nevertheless throws {{JexlException.Cancel}}
at the end, once again.
> Ability to continue interrupted scripts
> ---------------------------------------
>
> Key: JEXL-255
> URL: https://issues.apache.org/jira/browse/JEXL-255
> Project: Commons JEXL
> Issue Type: Improvement
> Affects Versions: 3.1
> Reporter: Dmitri Blinov
> Assignee: Henri Biestro
> Priority: Major
> Fix For: 3.2
>
>
> I'm trying to implement the {{@timeout}} annotation that should work like the
> following
> {code:java}
> @timeout(15000) { return longrunningcall(); }
> {code}
> The idea is to protect part of the script code from being executed
> indefinitely or more than allowed by business rules. The script should
> continue its evaluation after the {{@timeout}} annotation regardless of
> whether the timeout has taken place or not.
> There is a straightforward implementation that starts guarding thread which
> should invoke {{Thread.interrupt()}} for the thread executing the script. The
> {{InterruptedException | JexlException.Cancel}} is then caught and swallowed
> inside the {{processAnnotation()}} method, and if the guard thread has fired,
> which means the timeout occured, the {{null}} value is returned.
> I expected the script to continue its evaluation after the exception is
> processed inside {{processAnnotation()}} code, but the script nevertheless
> throwed {{JexlException.Cancel}} as a result. The suggestion is to allow
> script to continue its evaluation once {{InterruptedException}} or
> {{JexlException.Cancel}} is processed.
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