xpath query

[Jaspreet Singh <Ja...@quark.co.in>]

if i evaluate .//A i get all A nodes. i should get all A nodes from the
context that i've passed. is this a bug or a feature?

also, if i say /A/B[3]/preceding-sibling::B[1]
does xalan stop processing nodes when it gets the required node? or does it
create a list of all preceding siblings and then selects the first one?


thanks
jaspreet

Re: xpath query

[da...@us.ibm.com]

> if i evaluate .//A i get all A nodes. i should get all A nodes from the 
context that
> i've passed. is this a bug or a feature?

You should get all A descendants from the context or and the context node, 
if it's an A.  If that's not what you're getting, then please file a bug 
report, and include a _simple_ set of inputs, including source code, that 
reproduces the problem.

> also, if i say /A/B[3]/preceding-sibling::B[1] 
> does xalan stop processing nodes when it gets the required node?
> or does it create a list of all preceding siblings and then selects the 
first one?

It finds all of the nodes, then applies the predicate.  This is something 
we could optimize at some point, but depending on the axis, it can be very 
tricky.

Dave