[jboss-jira] [JBoss JIRA] Closed: (JBRULES-451) Allow optional trailing comma "," for field constraint list

[Mark Proctor (JIRA)]

     [ http://jira.jboss.com/jira/browse/JBRULES-451?page=all ]

Mark Proctor closed JBRULES-451.
--------------------------------

    Resolution: Won't Fix

I discussed this with the team, becuse you are good bug reporter we took the time to discuss thoroughly. But we decided that we won't add this one. It creates ambiguity in the grammar and only really masks lazyness, which could lead to other problems....

> Allow optional trailing comma "," for field constraint list
> -----------------------------------------------------------
>
>                 Key: JBRULES-451
>                 URL: http://jira.jboss.com/jira/browse/JBRULES-451
>             Project: JBoss Rules
>          Issue Type: Feature Request
>      Security Level: Public(Everyone can see) 
>          Components: Drl Parser/Builder
>    Affects Versions: 3.0.4
>            Reporter: Juergen none
>         Assigned To: Mark Proctor
>            Priority: Optional
>
> With frequently re-arranging / adding / removing field constraints, I more than once forgot to add / remove trailing/separating commas in the field constraint list.
> would it be possible to extend the drools drl syntax to allow an optional trailing comma?
> e.g.
> A(
>   a == 1,
>   b == 2, // optional trailing comma, should not yield the syntax error
> )
> A(
>   a == 1,
>   b == 2 // no (optional) trailing comma, like currently required, is also valid
> )

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