is there a way to combine xpath and regexp to extract parts of a node value?

Question

this is what I want...

Assuming I'm trying to get at the value of 'B'

<tree>
<nodea>
<nodeb>
A=foo;
B=bar;
C=goo;
</nodeb>
</nodea>
</tree>

the following is magical syntax which would make sense... I'm looking for something comparable that actually works :)

string = "./nodea/nodeb/[ REGEX( 'B=(.*?);' ) ]/ $1"

Is there anything like this in any java xpath library?

Answer 1

XPath 2.0 adds regular expressions. Something like this ought to do what you want, I think:

fn:replace(./nodea/nodeb, ".*B=(.*?);.*", "$1")