XOM API for Processing XML with Java

[Wolfgang Hoschek <wolfgang.hoschek AT mac.com>]

I haven't tried it, but a quick scan over the code indicates that  
running this with a NodeFactory that returns null on  
startMakingElement() will cause a NPE (e.g. a  
XOMUtil.getNullNodeFactory()). In this case the element and its  
attributes and namespace declarations should be skipped, preserving  
the exact same semantics the Builder has.

Same holds for exceptions involving multiple root elements, missing  
root elements, etc. At least that's the guideline I've been using in  
all Nux build methods that take a NodeFactory.

Wolfgang.

On Jan 14, 2006, at 5:48 AM, Elliotte Harold wrote:

> Steve Loughran wrote:
> > I'm trying to convert a w3c.dom.Document into a xom one, but need to
> > pass in my own node factory.
> >
> > there isnt any option to pass one down, nor can I easily tack one in
> > by a bit of subclassing, as the DomConverter doesnt use a node  
> > factory
> > and doesnt have a method createNodeFactory() that I could have
> > overridden.
>
> DOMConverter in CVS now contains a couple of methods that will  
> allow you
> to supply a NodeFactory when converting documents and document  
> fragments
> from DOM to XOM.
>
> public static Document convert(org.w3c.dom.Document domDocument,
> NodeFactory factory)
> public static Nodes convert(org.w3c.dom.DocumentFragment fragment,
> NodeFactory factory)
>
> Please try this out and see if it works for you. Also, anyone else  
> whose
> using the DOMConverter may want test their code with this to see if I
> accidentally broke it. The internal changes have been quite  
> significant.
>
> I'm also curious about thoughts on the API. One definite  
> possibility is
> making both methods return a Nodes object rather than a document.  
> As is,
> some of the trickier node factories can prevent the conversion by
> returning the wrong thing in the wrong place. However simple cases
> should work.
>
> If this case had come up in the 1.0 time frame it might have convinced
> me to make the convert methods instance methods instead of static
> methods. However I'm hesitant to make that change now.
>
> --
> Elliotte Rusty Harold  elharo AT metalab.unc.edu
> XML in a Nutshell 3rd Edition Just Published!
> http://www.cafeconleche.org/books/xian3/
> http://www.amazon.com/exec/obidos/ISBN=0596007647/cafeaulaitA/ 
> ref=nosim
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