Using pass-by-references encourages null pointer exceptions, should we
switch to pass-by-value only?
Its there because it is very convinient and using it IN NO WAY ENCOURAGES
YOU TO CREATE THE PAGE INSTANCE!
Ie
class EditUserPage {
public EditUserPage(WebPage backPage) {
add(new PageLink("backlink", backPage));
}
}
-Igor
> -----Original Message-----
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED] On Behalf Of Gili
> Sent: Saturday, August 20, 2005 1:19 PM
> To: [email protected]
> Subject: Re: [Wicket-user] PageLink and lazy Page construction
>
>
> That was uncalled for. I did look at Linkomatic and the
> Javadoc. I'm simply wondering why do we provide such methods
> in PageLink if they encourage eager page construction? Aren't
> we trying to avoid this sort of thing?
>
> Gili
>
> Igor Vaynberg wrote:
> > You would actually have to look at the code and examples to figure
> > this out
> > :)
> > -Igor
> >
> >
> >
> >>-----Original Message-----
> >>From: [EMAIL PROTECTED]
> >>[mailto:[EMAIL PROTECTED] On Behalf Of
> >>Christian Essl
> >>Sent: Saturday, August 20, 2005 12:47 PM
> >>To: [email protected]
> >>Subject: Re: [Wicket-user] PageLink and lazy Page construction
> >>
> >>I think you should use a new PageLink(String id, IPageLink
> >>pageLink) which does onClick() init or use a BookmarkablePageLink.
> >>
> >>Christian
> >>
> >>
> >>On Sat, 20 Aug 2005 15:15:39 -0400, Gili <[EMAIL PROTECTED]>
> >>wrote:
> >>
> >>
> >>>Hi,
> >>>
> >>> Correct me if I'm wrong but when one uses PageLink and
> >>
> >>passes in a
> >>
> >>>Page object (you have to construct it yourself) won't you
> >>
> >>end up with
> >>
> >>>an expensive cascade of Page construction? Meaning, Page1 links to
> >>>Page2 links to Page3. When I construct a PageLink to Page2, its
> >>>constructor gets invoked, and in its constructor it links
> >>
> >>to Page3, so
> >>
> >>>*its* constructor gets invoked.
> >>>
> >>> I remember a while ago we discussed why PageLink doesn't have a
> >>>constructor that takes in a PageParameters argument ... but
> >>
> >>in light
> >>
> >>>of this, don't we need one? I'm looking for a way for page
> >>>construction to always occur lazily.
> >>>
> >>>Gili
> >>
> >>
> >>
> >>--
> >>Christian Essl
> >>
> >>
> >>
> >>
> >>
> >>___________________________________________________________
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> >>
> >>
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> >
> >
> >
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> September 19-22, 2005 * San Francisco, CA * Development
> Lifecycle Practices
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