XOM API for Processing XML with Java

[Tatu Saloranta <cowtowncoder AT yahoo.com>]

--- Verachten Bruno <Bruno.Verachten AT atosorigin.com>
wrote:

> > If you are interested, I can also explain the way
> to 
> > configure the StAX XMLInputFactory for validation.
> If you don't mind, I would like to hear more about
> it.

Ok, but I'll probably better take this off to XOM list
(after this reply). I'll cc Woodstox user list, since
the description (I'll send full details later on)
should be useful for others.

At high level, there's a XMLValidationSchemaFactory,
that one needs to obtain same way as XMLInputFactory
(part of experimental stax2 extension), for specific
schema type. Factory can parse given input into an
immutable XMLValidationSchema object, from which
non-thread-safe per-document XMLValidator instances
can be created, by both XMLStreamReaders and
XMLStreamWriters (can validate input and output). This
is quite similar to how native MSV API works. 
There are more specific details obviously, but I'll
save those to the other email as it's not really XOM
related (and there are some open questions regarding
integration with other frameworks)

...
> Well, it was really hard to move from DTDs to Schema
> in our department.
> It will be really hard too to get people used to
> RNG. ;-)

Yeah, I hear you. It's just such a pity -- for actual
validation use cases, RNG is just so much easier to
work with from all around (from xml parser integration
perspective, usage, simplicity).

Oh, one last note: if you need the w3c schema
validation right now, it is probably a good idea to
use the usual SAX route, since that's already there
and well tested. I don't want to be advertising Real
Soon Now feature too heavily, even though I fully
intend to make StAX route a competitive one.

-+ Tatu +-


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