Hey Chris
Just a thought, what if DocumentFactory had a way of
registering a NamespaceContext or a namespace URI Map
with it, then you could register your normal
namespaces once and never have to worry about such
things again.
e.g. if you were to register your preferred namespace
URIs with the singleton DocumentFactory, then
everthing should see it I think.
I`m on the road the moment, having to use pesky
internet cafes right now but once I get a real net
connection on my laptop I will try experiment with
this approach, it could make things *much* easier to
use when using namespaces and XPath.
BTW point 2) you mention - XPath cannot use namespaces
with no prefixes. Or to say that another way, the only
way to specify a namespace in an XPath expression is
to use a prefix.
James
FROM: Chris NoklebergDATE: 01/16/2002 15:23:12SUBJECT:
[dom4j-dev] Easier namespace xpath handling First, I
really like the new setNamespaceURIs feature in CVS.
It makes
xpath useful again. But, it is still a pain to have to
create an
xpath, set the mapping, and then execute the xpath,
instead of just
calling selectNodes, etc., directly on the context
node.
What I have done to get around this is create my own
DocumentFactory
which overrides createXPath to always bind the "my"
prefix to the
namespace URI of the context node. Then I just use
"my:" for
everything, unless I need a node from a different
namespace (which
for me is rare).
It would be nice if this kind of shortcut were built
in. I don't have
very good suggestions, though:
1) Reserve a special namespace like "my" or "self"
2) Make unprefixed elements default to the namespace
of the context
node (but how would you specify the empty
namespace?)
3) Add some way of setting a default prefix/namespace
mapping for a
whole document tree at a time, aside from writing
your own
DocumentFactory? A setNamespaceURIs method on
Node?
-- Chris
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