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From "Adam Winer" <awi...@gmail.com>
Subject Re: protected final methods in ADF components/renderers
Date Mon, 15 May 2006 06:08:22 GMT
Without having looked at this specific example, they're probably
overriding protected methods from the parent class (abstract
protected, perhaps?).  In which case, they need to be protected,
but if they aren't intended for overriding, they're marked final.

-- Adam


On 5/14/06, Rogers Reilly <rogers_reilly@s-rod.com> wrote:
> Hi,
>
> I'm looking into extending <af:table>, and had a question about the use
> of "final" on several protected methods- notably the
> "renderRegularHeaders" method in DesktopTableRenderer.  All I need to do
> is stick javascript onmouseover/onmouseout events (a feature the
> Tomahawk table has in the form of "rowOnMouseover/rowOnMouseout") on the
> TR element, which gets written there, but because the method is marked
> "final," I'm stuck overriding a method way higher up the stack (haven't
> figured out exactly how high yet) and copying a bunch of code verbatim.
>
> I ran into a similar issue adding the defaultSortOrder feature I
> submitted a JIRA issue about earlier; some "final" method of
> ColumnGroupRenderer necessitated my extending XhtmlRenderer directly
> with lots of copied code, rather than extending ColumnGroupRenderer and
> overriding a method or two.  (by the way, will provide working
> defaultSortOrder code when I get a sec)
>
> My question--and this is an honest question, I'm a relatively new and
> self-taught Java developer--is what does marking these methods "final"
> buy you?  If they're marked "protected," it seems like they're designed
> to be overriden.  A lot of the features I'd like to add--little
> Javascript here and there, maybe inline CSS on child table elements,
> etc--is piddly stuff that would be great to be able to implement with
> polymorphism.
>
> Thanks in advance,
> Rogers
>

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