[rules-users] Possible to check for null and empty string in same rule?

[Edson Tirelli]

   Brian,

   Easy to understand with String and Character, but what would be an empty
Date or empty Number, etc?
   Unfortunately the DSL template engine is a text template engine, and as
so, does not validate type. The only thing I can think about is if you
create a function that is called at runtime, evaluating parameter type and
handling it appropriately.

    []s
    Edson


2007/8/31, Brian Enderle <brianke at gmail.com>:
>
> One of the checks that we are required to do on our data is that the data
> is
> not blank, meaning the value retrieved from the DB is not null and not ""
> (empty string) or '' (empty characer), etc..
>
> Is there anyway to create a DSL entry to do this check regardless of the
> data
> type (Stirng, character, Date, etc.) that is returned?
>
> I have tried the obvious ({field} == null || {field} == "") but this only
> works for String types.  I would really like to have just one DSL entry
> that
> would handle all cases.
>
> Thanks,
> Brian Enderle
>
>
>
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-- 
  Edson Tirelli
  Software Engineer - JBoss Rules Core Developer
  Office: +55 11 3529-6000
  Mobile: +55 11 9287-5646
  JBoss, a division of Red Hat @ www.jboss.com
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