Sorry for the delay of my answer.
It seems that Jonathan is right : the data were retrieved by Hibernate
as a Set.
I have tried this morning to get a trace of this error but our code has
come far beyond and i could not reproduce this error anymore. Sorry.
If you need it, i can give you more informations about the context of
the error.
Stephane
Jonathan Barker a écrit :
Actually, it wasn't the coercion to GridDataSource I was concerned about.
It looks like a Set is generated in the page, and then passed to the
component as a List and then that is used as the source for the grid.
(Having said that, is com.mycompany.MyType a custom type declared for
Hibernate?)
I experienced strange things back with T4, Hibernate and different
collection types and inheritance hierarchies when passing parameters. At
the time I was a rookie with Hibernate, Spring and Tapestry so it was never
an issue of "should this work?" it was an issue of "what do I have to do to
make this work?"
In addition to the stack trace, the page code (particularly that portion
generating the collection) would be useful.
Jonathan
-----Original Message-----
From: Howard Lewis Ship [mailto:[EMAIL PROTECTED]
Sent: Saturday, April 05, 2008 9:00 AM
To: Tapestry users
Subject: Re: Coercion error in grid
No, I'm pretty sure there's a built-in coercion from Collection to
GridDataSource. Again, a stack trace would be helpful to figure out
what's really going on here (and the exact version of Tapestry).
On Fri, Apr 4, 2008 at 1:53 PM, Jonathan Barker
<[EMAIL PROTECTED]> wrote:
It sounds like the underlying data (from the page) is in a Set, whereas
your
component wants a List. Try converting your Set to a List before
passing to
the component.
> -----Original Message-----
> From: Howard Lewis Ship [mailto:[EMAIL PROTECTED]
> Sent: Friday, April 04, 2008 2:58 PM
> To: Tapestry users; [EMAIL PROTECTED]
> Subject: Re: Coercion error in grid
>
> That is really, really odd. A stack trace (and the exact version of
> Tapestry you are using) would be helpful.ß
>
> On Fri, Apr 4, 2008 at 3:06 AM, Stephane Decleire
> <[EMAIL PROTECTED]> wrote:
> > Hi all,
> >
> > When i try to show a list of my objects in a grid, i get the
following
> > error :
> > "Could not find a coercion from type
> org.hibernate.collection.PersistentSet
> > to type com.mycompany.MyType"
> >
> > Here is my component code :
> >
> > public class UserAdsList {
> >
> > @Parameter(required = true)
> > private List<Ad> ads = null;
> > public List<Ad> getAds() {
> > return ads;
> > }
> > public void setAds(List<Ad> ads) {
> > this.ads = ads;
> > }
> > }
> >
> >
> > and template :
> >
> > <t:container
> > xmlns:t="http://tapestry.apache.org/schema/tapestry_5_0_0.xsd";>
> >
> > <t:grid source="ads"/>
> >
> > </t:container>
> >
> > Any idea ?
> >
> > Stephane
> >
>
>
>
> --
> Howard M. Lewis Ship
>
> Creator Apache Tapestry and Apache HiveMind
>
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Creator Apache Tapestry and Apache HiveMind
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