[jdom-interest] Element Reference from Attribute
bob at werken.com
Fri Nov 17 09:54:11 PST 2000
> Ok. That is pretty straightforward. But then again, you did ask for the
> "goober" Attributes, not the Elements with "goober"s :-)
You're right, but someone might want to do that. Sure, there's a
better XPath for it, but it's still legal to do as I described.
> Aahh... Here you do want the Elements with "goober"s. When you say you
> cannot implement it, you are saying you can't implement it on top of
> XPath("/foo/bar/baz/@goober") - ie. get the attributes and then traverse - but
> you could implement it directly since you can keep both the Element and
> Attribute references handy while traversing... yes? namely,
I'm saying that I can't easily (though, it's not impossible) implement
the perfectly legal XPath of '/foo/bar/baz/@goober/..' Sure, it's
equivelent to '/foo/bar/baz[@goober]', but no telling what someone
else might want to do.
> Element e = ...
> Attribute a = e.getAttribute("goober");
> if (a != null )
Right, which is the 2nd case of '/foo/bar/baz[@goober]', but we
still haven't figured out the 1st case.
> The question still reduces to "do we ever have only an Attribute reference
> and want the Element?"
I still stand by my use-case that folks may use an XPath to extract
some Attributes, and then wish to find the owning Element.
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