XOM API for Processing XML with Java

["Steve Loughran" <steve.loughran AT gmail.com>]

On 12/03/07, Fred Baube <fbaube AT saunalahti.fi> wrote:
> I'm trying to
> 1) subclass nu.xom.Element with a class named my.MElm, and
> 2) ensure that the nu.xom.Document that XOM builds for me
>    uses my MElm's rather than nu.xom.Element's.
>
> According to the text at  http://www.xom.nu/tutorial.xhtml#d0e1424
> ("Factories, Filters, Subclassing, and Streaming"), I also have to
> subclass NodeFactory.  I do this, calling it my.MNodeFactory.
>
> So, in method my.MNodefactory.startMakingElement(String NS_URI,
> String name) , I return an instance of my.MElm.
>
> I verify downstream that XOM accepted this instance of the subclass,
> and I finish the element like so:
>
>         finishMakingElement(nu.xom.Element E) {
>                 assert (E instanceof my.Elm); // succeeds
>                 return (super.finishMakingElement (E));
>         }
>
>  But when I obtain the Document that is created by XOM, I find that
> the nodes in the document are instances of nu.xom.Element, not my.Elm.

Its probably the root element that isnt matching, because that has a
separate method that you need to override, possibly by redirecting to
your startMakingElement/2 method.


   public Element makeRootElement(String name, String namespace) {
       return startMakingElement(name, namespace);
   }