[jboss-jira] [JBoss JIRA] (DROOLS-165) Fail-fast mode when a global is not defined at session start

[Mario Fusco (JIRA)]

     [ https://issues.jboss.org/browse/DROOLS-165?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Mario Fusco reassigned DROOLS-165:
----------------------------------

    Assignee: Mario Fusco  (was: Mark Proctor)

    
> Fail-fast mode when a global is not defined at session start
> ------------------------------------------------------------
>
>                 Key: DROOLS-165
>                 URL: https://issues.jboss.org/browse/DROOLS-165
>             Project: Drools
>          Issue Type: Feature Request
>      Security Level: Public(Everyone can see) 
>    Affects Versions: 6.0.0.Beta3
>            Reporter: Jan Hustak
>            Assignee: Mario Fusco
>            Priority: Minor
>
> The following DRL causes an infinite loop when run without setting the "missing" global:
>     global java.util.Collection missing
>     dialect "mvel"
>     rule "toInfinityAndBeyond"
>       when
>       then
>         x = missing[3]
>     end
> because it triggers https://jira.codehaus.org/browse/MVEL-290
> Even though the core issue is in MVEL I would really like an option to fail fast when a global is undefined at the very start of a session. I don't know about others but I never define globals from within the rules and I've had all sorts of trouble with missing globals - the infinite loop was just the last straw.
> Of course, a global may legitimately be defined as null (which would also trigger the MVEL bug). So perhaps the fail-fast mode could be enabled on a case-by-case basis:
>     global required java.util.Collection basicHelpers
> Sorry if this has been suggested before, I couldn't find any pertinent discussions.

--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira