does it mean one needs to parse the XML twice: 
  once from JAXP for constraint validation
  once more from JAXB for marshal/unmarshal operations

If this is true, Isn't it better to opt for XmlBeans
where you get the functionality of both JAXP and JAXB
with just one processing?

cheers!
-D
--- Michael Glavassevich <mrglavas@c...> wrote:

> 
> You're assuming that has to be an 'or'. It doesn't.
> You can provide a JAXP
> javax.xml.validation.Schema to a JAXB 2.0
> Unmarshaller and it will validate
> the documents it unmarshals using the schema you
> specified.
> 
> Thanks.
> 
> Michael Glavassevich
> XML Parser Development
> IBM Toronto Lab
> E-mail: mrglavas@c...
> E-mail: mrglavas@a...
> 
> xmlschema-dev-request@w... wrote on 11/28/2007
> 09:04:49 PM:
> 
> > Given an XSD schema with key/keyref constraints,
> > which XML processing to use- JAXB or JAXP?
> >
> >  JAXB is great because I get Marshal/Unmarshal
> > capability. But JAXB 1.0 doesn't seem to support
> > Key/Keyref constraint validation. JAXP seems to
> > support this Key constraint validation in XSD.
> But,
> > one has to implement Marshal/Unmarshal which
> doesn't
> > come free here.
> >
> >  Obviously in my case, I do need to construct Java
> > object for the incoming XML and vice-versa.
> >
> >
> >
> >
>
____________________________________________________________________________________
> 
> > Never miss a thing.  Make Yahoo your home page.
> > http://www.yahoo.com/r/hs
> 
> 
> 
> 



      ____________________________________________________________________________________
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