On 31 December 2010 19:05, Michael Whidden <mwhidden@thebluew.com> wrote:
Thank you! That fixes it, without using getter methods. So did I make a
mistake, or is this a workaround for a bug?
These work:
$o:Order(q > (b.maxQ))
$o:Order($o.q > ($o.b.maxQ))
$o:Order(b.maxQ > q)
$o:Order($o.b.maxQ > $o.q)
These don't:
$o:Order(q > b.maxQ)
$o:Order($o.q > $o.b.maxQ)
Is this proper behavior, or a bug? I can't find anything in the docs
that describes the parens as required when a qualified identifier
appears on the right side of a binary operator in a constraint.
On 12/31/2010 11:47 AM, Wolfgang Laun wrote:
> Try parenthesizing the right hand side but note that you may have to use
> getters to access the fields
> $o:Order($o.q > ($o.getB().getMaxQ() ) )
>
> It's possible that using dialect "mvel" might be a way to avoid using
> the getX() instead of x.
>
> -W
>
>
> On 31 December 2010 17:30, Michael Whidden <mwhidden@thebluew.com
> <mailto:mwhidden@thebluew.com>> wrote:
>
> At Mr. Legendre's suggestion, I removed the $o from my constraints, but
> with the same result: (b.maxQ < q) works, but (q > b.maxQ) fails. I get
> the error:
> "Unable to create restriction '[QualifiedIndentifierRestr: < b.maxQ ]'
> for field 'quantity' in the rule 'MaxQty'"
>
>
>
> On 12/30/2010 2:32 PM, Michael Whidden wrote:
> > I notice an unexpected behavior when creating a technical DRL in
> Guvnor.
> >
> > If I have a fact with a sub-fact, then binary operators don't
> seem to be
> > commutative.
> >
> > Eg.,
> >
> > declare Broker
> > maxQ: Integer
> >
> > declare Order
> > q: Integer
> > b: Broker
> >
> > The rule
> > $o:Order($o.b.maxQ < $o.q)
> > validates fine, but
> > $o:Order($o.q > $o.b.maxQ)
> > returns an error "Unable to create restriction
> > '[QualifiedIndentifierRestr: > $o.broker.maxQ ]' for field '$o.q'
> in the
> > rule"
> >
> > I'm new, so I want to make sure I'm not missing something obvious
> here...
>
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