At which state in the lifecyle ?
the 'var' attribute of UIData is only available during processing the
UIDatas lifecycle methods.
e.g. only if uiData.isRowAvailable() returns true.
you can set the rowIndex to a specific value to force this e.g.:
uiData.setRowIndex(0);
to fetch the data for the first row.
don't forget to reset the rowindex (to -1)
Regards,
Volker
2007/4/18, Rudi Steiner <[EMAIL PROTECTED]>:
Hi Volker,
I tried this but I just get null.
Do you have further ideas?
Thanks,
Rudi
On 4/18/07, Volker Weber <[EMAIL PROTECTED]> wrote:
> Hi Rudi,
>
> you need the facesContext:
> FacesContext facesContext = FacesContext.getCurrentInstance();
>
> try either
>
> app.getVariableResolver().resolveVariable(facesContext, "person");
>
> without the '#{' and '}'
>
> or
>
> app.createValueBinding("#{person}").getValue(facesContext);
>
>
> Regards,
> Volker
>
> 2007/4/18, Rudi Steiner <[EMAIL PROTECTED]>:
> > Hi Volker,
> >
> > thank you for the link. I had already tried it that way but it dosn't work.
> >
> > What I'm doing is the folloging:
> >
> > In the backingbean I generate a <h:dataTable/> on the fly
> >
> > private HtmlDataTable generateTable(List<Person> people){
> >
> > HtmlDataTable result = new HtmlDataTable();
> >
> > result.setValue(people);
> >
> > FacesContext context = FacesContext.getCurrentInstance();
> > Application app = context.getApplication();
> >
> > ValueBinding VBfirstName = app.createValueBinding("#{person.firstname}");
> > ValueBinding VBsurName = app.createValueBinding("#{person.surname}");
> > ...
> > UIOutput headerFirstName = new UIOutput();
> > headerFirstName.setValue("Vorname");
> > UIColumn columnFirstName = new UIColumn();
> > columnFirstName.setHeader(headerFirstName);
> >
> > UIColumn columnChildren = new UIColumn();
> >
> > result.getChildren().add(columnFirstName);
> >
> >
> > In the columnChildren I would like to include another HtmlDataTable by
> > calling this method recursively , and as an parameter I would pass the
> > childrenlist of the current person
> > (gernerateTable(#{person}.getChildren)). To do this, I must have
> > access to the object behind the EL-Expression #{person}
> >
> > Can you tell me, how I can resolve this EL-Expression.
> > I tried it this way:
> >
> > VariableResolver resolver = app.getVariableResolver();
> > resolver.resolveVariable(context, "#{person}");
> >
> > But it dosn't work. Do you know to which context I must resolve the
> > EL-Expression?
> >
> > Best regards,
> > Rudi
> >
> > On 4/17/07, Volker Weber <[EMAIL PROTECTED]> wrote:
> > > Hi Rudi,
> > >
> > > see here:
> > > http://wiki.apache.org/myfaces/AccessingOneManagedBeanFromAnother
> > >
> > >
> > > Regards,
> > > Volker
> > >
> > > 2007/4/17, Rudi Steiner <[EMAIL PROTECTED]>:
> > > > Hello,
> > > >
> > > > I'm creating a HtmlDataTable programmaticaly. So in my jsp I wrote just
> > > >
> > > > <h:form>
> > > > <h:dataTable
> > > > var="person"
> > > > binding="#{TableBean.personTable}"
> > > > />
> > > > </h:form>
> > > >
> > > > and created all the content of the dataTable in a method
> > > > (createHtmlDataTableFromPersonList(List people)) in the
> > > > backingbean(Columns, Buttons, ...). Everything works fine so far.
> > > >
> > > > My problem is, that I want to render a HtmlDataTable in the first
> > > > table recursively and for this reason I have to resolve the variable
> > > > person, to get the children of person an call
> > > > createHtmlDataTableFromPersonList(List people) recursively.
> > > >
> > > > Could anyone tell me, how I can resolve the EL-Expression "#{person}",
> > > > so that I have access to the real Object behind this expression.
> > > >
> > > > Thank you,
> > > > Rudi
> > > >
> > >
> >
>
