I think people are getting turned off by it being called primaryKey()
because that makes it sound like all you can work from are databases.
It's really not though. It's more like hashCode(), but returning a
String. But if you called it something like stringHashCode(), people
wouldn't know what the hell you were talking about.
Actually, you know what, that gives me an idea:
public abstract class SimpleDataProvider implements IDataProvider {
public String getPrimaryKey(Object o) {
return Integer.valueOf(o.hashCode()).toString();
}
}
Badda bing. ;)
On 8/10/05, Igor Vaynberg <[EMAIL PROTECTED]> wrote:
> Right, we would need to have something like this:
>
> Public abstract class ModelIteratorDecorator {
> private Iterator delegate;
>
> ...
>
> public boolean hasNext() {
> return delegate.hasNext();
> }
>
> public Object next() {
> return model(delegate.next());
> }
>
> public abstract Imodel model(Object o);
>
> ...
> }
>
> And then in your dataprovider :
>
> public Iterator iterator(int first, int count) {
> Iterator it=getiteratorfromdatastore();
> return new ModelIteratorDecorator(it) {
> public Imodel model(Object o) {
> ...
> }
> }
>
> This seems more complicated and more verbouse.
>
> -Igor
>
>
>
>
> > -----Original Message-----
> > From: [EMAIL PROTECTED]
> > [mailto:[EMAIL PROTECTED] On Behalf Of
> > Jonathan Locke
> > Sent: Wednesday, August 10, 2005 3:18 PM
> > To: [email protected]
> > Subject: Re: [Wicket-user] DataView: IDataProvider.primaryKey() vote
> >
> >
> > no, you just write an adaptor...
> >
> > Johan Compagner wrote:
> >
> > >
> > >>
> > >> i also don't quite understand the choice of the word
> > "Data" here...
> > >> isn't this really a TableView
> > >> or GridView more than a DataView? and if you keep the details of
> > >> sorting and key/identity on the other side of the
> > interface, it would
> > >> work with things other than database objects...
> > >
> > > It is supposed to be an easy DataView for database objects Else you
> > > would just get a ListView...
> > >
> > >>
> > >> btw, why does model() exist? couldn't iterator just
> > produce a bunch
> > >> of IModels? this seems nice to me...
> > >
> > > If you don't do that then you have to loop twice over everything...
> > > first in the iterator (that just returns directly a
> > hibernate list (or
> > > whatever db impl you have)
> > >
> > > return getContactsDB().find(first, count, "firstName",
> > > true).iterator();
> > >
> > > Then that method would be completely different.
> > > First iterate yourself build up yet another List wrap
> > everything you
> > > get inside a IModel and then call iterate again on it.
> > >
> > >
> > >
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