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Re: XPath optional node question

Subject: Re: XPath optional node question
From: Dimitre Novatchev <dnovatchev@xxxxxxxxx>
Date: Mon, 4 Dec 2000 11:45:22 -0800 (PST)
Re: XPath optional node question
Hi Lynn,

Use the following:

/foo/descendant::*[name() = 'a' or name() = 'b']/bar


Cheers,
Dimitre.


Lynn Monson wrote:

Hello all,

I'm trying to write an XPath expression that matches optional elements
in an
element path.  For example, suppose I have the following XPath
expression:

foo//bar

But I want to allow any number (even zero) of "a" and "b" elements to
exist
where the "//" is.  So my general expression would match the same nodes
as,
say, these xpaths:

foo/a/bar
foo/a/a/a/a/bar
foo/a/b/bar
foo/b/bar
foo/bar

But would not match nodes matched by:

foo/x/bar

I've been unable to construct a proper xpath.  Any help would be
greatly
appreciated.

Thanks



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