Re: [Vtd-xml-users] Random Access Proposal (take 2)

[Tatu S. <cow...@ya...>]

--- Rodrigo Cunha <rn...@gm...> wrote:

> Nah... given what i understand about the internal
> structure making it 
> the new document root is not trivial, i think.

I guess there are two different cases: one of using as
context node (which seems trivially easy), where it
doesn't limit xpath from going up the hierarchy; and
the other that would essentially force a sub-tree to
be new "sub-document" (so that xpath traversal would
never go up past the sub-tree root). Latter would be
only little bit more complicated unless I'm missing
something.

I mean, xpath processing code uses int indexes for
traversing different axes; and it should be able to
limit its visibility to sub-tree, which is just
int-range (node-start-offset - to -
next-sibling-offset-minus-1). That's one benefit of
using consequtive int indexes, defining sub-trees is
rather simple.

-+ Tatu +-



 
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