Does anyone know why in my renderer this line of code
returns null? (The attribute colClass uses
valueBinding. And by the way, it worked fine in JSF
1.1.01 but like I said returns null in myFaces 1.0.7.)
String colClass = (String)
rptTableCol.getAttributes().get("colClass");
But this set of code works.
vb = rptTableCol.getValueBinding("colClass");
String colClass = null;
if (vb == null) {
colClass = (String)
rptTableCol.getAttributes().get("colClass");
} else {
colClass = (String) vb.getValue(context);
}
It seems that the JSF 1.1.01 get method checks to see
if valueBinding exists for this attribute and returns
the value from it if it does. But in myFaces it
doesn't work that way.
Anyone know why?
If not, can someone give me a link to the MyFaces spec
so that maybe I can try and figure it out? :)
Thanks,
Ray
--- Heath Borders <[EMAIL PROTECTED]> wrote:
> I'm not sure, you might have to check the MyFaces
> spec and see.
>
>
> On Thu, 6 Jan 2005 18:15:58 -0800 (PST), Ray Clark
> <[EMAIL PROTECTED]> wrote:
> > I don't understand what you mean. You said "the
> > attributes map in the RI might do the ValueBinding
> > checking for you". But when I had
> > "rptTableCol.getAttributes().get("colSpan")" it
> was
> > returning null when colSpan used value binding.
> That
> > was my problem, to get around that I had to do the
> > check that I mentioned. I agree with you that the
> > attributes map might do the check for me, and it
> seems
> > to in JSF 1.1.01, but it doesn't in myFaces 1.0.7.
> So
> > if what you are saying is true, then is there a
> bug in
> > the RI in myFaces 1.0.7?
> >
> > Thanks,
> > Ray
> >
> > --- Heath Borders <[EMAIL PROTECTED]> wrote:
> >
> > > Well, the attributes map in the RI might do the
> > > ValueBinding checking for you.
> > >
> > >
> > > On Wed, 5 Jan 2005 18:42:39 -0800 (PST), Ray
> Clark
> > > <[EMAIL PROTECTED]> wrote:
> > > > Thanks Heath.
> > > >
> > > > I just had time again to get back to this. I
> have
> > > a
> > > > new solution :)
> > > >
> > > > My renderer used to have this code:
> > > >
> > > > String colSpan = (String)
> > > > rptTableCol.getAttributes().get("colSpan");
> > > > if (colSpan != null) {
> > > > writer.writeAttribute("colSpan",
> colSpan,
> > > null);
> > > > }
> > > >
> > > > That code worked fine in JSF 1.1.01, but
> didn't
> > > work
> > > > with myFaces 1.0.7. Well, I now have new code
> in
> > > the
> > > > renderer that works. The renderer now looks
> like
> > > > this:
> > > >
> > > > ValueBinding vb =
> > > > rptTableCol.getValueBinding("colSpan");
> > > > String colSpan = null;
> > > > if (vb == null) {
> > > > colSpan = (String)
> > > > rptTableCol.getAttributes().get("colSpan");
> > > > } else {
> > > > colSpan = (String)
> vb.getValue(context);
> > > > }
> > > > if (colSpan != null) {
> > > > writer.writeAttribute("colSpan",
> colSpan,
> > > null);
> > > > }
> > > >
> > > > So to get this to work the renderer now has to
> > > check
> > > > to see if this attribute has value binding or
> not.
> > > > Then get the value appropriately. Now why
> would
> > > there
> > > > be a difference between JSF 1.1.01 and
> myFaces?
> > > >
> > > > Anyway, how does this solution look to you? :)
> > > >
> > > > Thanks,
> > > > Ray
> > > >
> > > > --- Heath Borders <[EMAIL PROTECTED]>
> wrote:
> > > >
> > > > > Adding that line really doesn't go along
> with
> > > the
> > > > > spirit of
> > > > > valueBindings, though. Ideally, you want
> the
> > > > > ValueBinding to be
> > > > > evaluated as late as necessary, preferably
> just
> > > > > before the UIComponent
> > > > > is rendered (which is when most
> ValueBindings
> > > are
> > > > > referenced, in the
> > > > > renderer).
> > > > >
> > > > >
> > > > > On Sun, 2 Jan 2005 16:41:55 -0800 (PST), Ray
> > > Clark
> > > > > <[EMAIL PROTECTED]> wrote:
> > > > > >
> > > > > > Well, I played around and I found a
> solution
> > > to my
> > > > > value binding problem.
> > > > > >
> > > > > > In the tag I have a setValueBinding method
> > > that I
> > > > > copied from the Core
> > > > > > JavaServerFaces book. It looks like this
> now:
> > > > > >
> > > > > > public void setValueBinding(UIComponent
> > > component,
> > > > > String attributeName,
> > > > > > String attributeValue) {
> > > > > >
> > > > > > FacesContext context =
> > > > > FacesContext.getCurrentInstance();
> > > > > > Application app =
> > > context.getApplication();
> > > > > > ValueBinding.vb =
> > > > > app.createValueBinding(attributeValue);
> > > > > >
> component.setValueBinding(attributeName,
> > > vb);
> > > > >
> > > > > > // Adding this line of code makes it
> work
> > > > > >
> > > component.getAttributes().put(attributeName,
> > > > > vb.getValue(context));
> > > > > > }
> > > > > >
> > > > > > I noticed that the Renderer was getting
> the
> > > value
> > > > > from the
> > > > > > component.getAttributes. So I added the
> put
> > > and
> > > > > it started working. I'm
> > > > > > not sure if this is what should have been
> > > done,
> > > > > but it certainly does the
> > > > > > job. The tag extends the UIComponentTag.
> > > Since
> > > > > this 1 line fixed the
> > > > > > problem I didn't think anyone would need
> any
> > > other
> > > > > code. Let me know if you
> > > > > > do though.
> > > > > >
> > > > > > As I said, this worked fine with JSF
> 1.1.01
> > > > > without the 1 line that I had to
> > > > > > add.
> > > > > >
> > > > > > Hope this helps someone to figure out what
> the
> > > > > problem was.
> > > > > >
> > > > > > Thanks,
> > > > > > Ray
> > > > > >
> > > > > >
> > > > > > Heath Borders <[EMAIL PROTECTED]>
> wrote:
> > > > > > Date: Sun, 2 Jan 2005 11:22:46 -0600
> > > > > > From: Heath Borders
> > > > > > To: Ray Clark
> > > > > > Subject: Re: ValueBinding
> > > > > >
> > > > > >
> > > > > > Make sure to let us know the answer if you
> > > find
> > > > > it. :)
> > > > > >
> > > > > >
> > > > > > On Sun, 2 Jan 2005 08:41:03 -0800 (PST),
> Ray
> > > Clark
> > > > > wrote:
> > > > > > > Thank you for your response. I need to
> trim
>
=== message truncated ===
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