http://www.ergnosis.com/java-spec-report/java-language/jls-15.8.4.html
On 8/13/05, Gili <[EMAIL PROTECTED]> wrote:
>
> Ok, this works now but I need to be able to get at the current
> Hibernate session from within populateItem()... Would it be possible to
> add PageableDataView.getSession() or something or how else would I be
> able to make sure I get at the exact same session that was used to
> retrieve the item that was passed into populateItem()?
>
> Thanks,
> Gili
>
> Phil Kulak wrote:
> > Couple problems there. First of all, you need to add the nested
> > ListView to the DataItem, not the PageableDataView. And also, why are
> > you listing columns? List ONE and ListView will iterate over it.
> >
> > Could we please move all Wicket-related talk to the mailing list from now
> > on?
> >
> > -Phil
> >
> > On 8/13/05, Gili <[EMAIL PROTECTED]> wrote:
> >
> >> Ok, this still isn't working... My Java code reads:
> >>
> >> final int NUM_COLUMNS = 4;
> >> ColumnedDataProvider columns = new
> >>ColumnedDataProvider(NUM_COLUMNS, imageProvider);
> >> PageableDataView images = new PageableDataView("images", columns,
> >>NUM_COLUMNS)
> >> {
> >> @Override
> >> protected void populateItem(DataItem item)
> >> {
> >> List images = (List) item.getModelObject();
> >> add(new ListView("columns", images)
> >> {
> >> @Override
> >> protected void populateItem(ListItem item)
> >> {
> >> List images = (List) item.getModelObject();
> >> int counter = 1;
> >> for (Object nestedModel: images)
> >> {
> >> assert(counter < NUM_COLUMNS);
> >> IModel typedModel = (IModel) nestedModel;
> >> Image image = (Image) typedModel.getObject(null);
> >> BufferedDynamicImageResource imageResource = new
> >>BufferedDynamicImageResource();
> >> imageResource.setImage(image.toBufferedImage());
> >> imageResource.setFormat("jpg");
> >> item.add(new wicket.markup.html.image.Image("column" +
> >>counter, imageResource));
> >> ++counter;
> >> }
> >> }
> >> });
> >> }
> >> };
> >>
> >> and the HTML reads:
> >>
> >> <span wicket:id="images">
> >> <span wicket:id="columns">
> >> <span wicket:id="column1"></span>
> >> <span wicket:id="column2"></span>
> >> <span wicket:id="column3"></span>
> >> <span wicket:id="column4"></span>
> >> </span>
> >> </span>
> >>
> >> but Wicket complains at runtime:
> >>
> >>A child with id 'columns' already exists
> >>
> >> What am I doing wrong?
> >>
> >>Gili
> >>
> >>Phil Kulak wrote:
> >>
> >>>Don't do the first one: IModel extends IDetachable.
> >>>
> >>>There's really no way to simplify more then that. They need to be
> >>>models so they can be detached. My feeling was that you would nest a
> >>>ListView in populateItem().
> >>>
> >>>On 8/13/05, Gili <[EMAIL PROTECTED]> wrote:
> >>>
> >>>
> >>>>FYI: Here is my populateItem...
> >>>>
> >>>> @Override
> >>>> protected void populateItem(DataItem item)
> >>>> {
> >>>> List images = (List) item.getModelObject();
> >>>> for (Object nestedModel: images)
> >>>> {
> >>>> IModel typedModel = (IModel)
> >>>> nestedModel;
> >>>> Image image = (Image)
> >>>> typedModel.getObject(null);
> >>>> }
> >>>> }
> >>>>
> >>>> As you can see, the user gets a List<HibernateModel> so he needs to
> >>>>iterate over the elements *and* invoke IModel.getObject() to get the
> >>>>actual list item. Is there a way to simplify this further or is this the
> >>>>best it's going to get?
> >>>>
> >>>>Thanks,
> >>>>Gili
> >>>>
> >>>>Gili wrote:
> >>>>
> >>>>
> >>>>> So my three changes are:
> >>>>>
> >>>>>1) HibernateModel now implements IDetachable
> >>>>>2) ColumnedDataProvider is not abstract
> >>>>>3) Wrap list item in ColumnedDataProvider:
> >>>>>row.add(dataProvider.model(i.next()));
> >>>>>
> >>>>> Can you please confirm all these changes are valid?
> >>>>>
> >>>>>Thanks,
> >>>>>Gili
> >>>>
> >>>>--
> >>>>http://www.desktopbeautifier.com/
> >>>>
> >>>
> >>>
> >>--
> >>http://www.desktopbeautifier.com/
> >>
> >
> >
>
> --
> http://www.desktopbeautifier.com/
>
>
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