Just for record, I have a similar issue using null Date values inside the
Grid component using 5.0.7-SNAPSHOT. In my case, the value must be null and
when this happens i get an unintelligible tapestry exception saying that it
"Cannot format given Object as a Date" somewhere inside the tapestry code.
2007/10/25, Max Weissboeck <[EMAIL PROTECTED]>:
>
>
> Is there already a solution to this, as I now have the very same problem
> (a
> Double value that must be null if the value is empty and not 0 - but if
> value is empty, an exception is thrown).
>
> Btw, I just startet to use T5 and I'm realy blown away! It's amazing how
> simple most things can be done! Very, very cool!
>
> Thanks, Max
>
>
> Howard Lewis Ship wrote:
> >
> > We're definitely getting into some contention here, as others are just
> as
> > eloquent that nulls should be coerced to zeros (and that's a code change
> > that went in last week).
> >
> > I think this needs more consideration. I'm thinking this needs to be
> > decided using a translator and there should be an easy way to handle
> this
> > inside BeanEditor. For example, property type Integer (wrapper type)
> uses
> > null when the user input is blank, but type int (the primitive) uses 0.
> >
> > On 10/3/07, Tom Davies <[EMAIL PROTECTED]> wrote:
> >>
> >> I'd like to be able to have optional values in a BeanEditForm linked
> >> bean represented as null, e.g. if they are of type Integer.
> >>
> >> I get the exception below.
> >>
> >> Should 'null' just coerce straight to null, unless it is trying to go
> >> to a primitive type?
> >>
> >> In TypeCoercerImpl, perhaps:
> >>
> >> // Treat null as void in terms of locating a coercion.
> >>
> >> Class sourceType = input != null ? input.getClass() :
> >> void.class;
> >>
> >> Should be: (untested)
> >>
> >> if (input == null)
> >> {
> >> if (targetType.isPrimitive())
> >> {
> >> throw ...
> >> }
> >> else
> >> {
> >> return null;
> >> }
> >> }
> >>
> >> Tom
> >>
> >> ---------------------------------------------------------------------
> >> To unsubscribe, e-mail: [EMAIL PROTECTED]
> >> For additional commands, e-mail: [EMAIL PROTECTED]
> >>
> >>
> >
> >
> > --
> > Howard M. Lewis Ship
> > Partner and Senior Architect at Feature50
> >
> > Creator Apache Tapestry and Apache HiveMind
> >
> >
>
> --
> View this message in context:
> http://www.nabble.com/-T5--Null-fields-and-BeanEditForm--tf4561146.html#a13407610
> Sent from the Tapestry - User mailing list archive at Nabble.com.
>
>
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>
--
Atenciosamente,
Marcelo Lotif
