Compositional Documents

Chris Berry CBerry at
Tue Feb 2 18:13:05 GMT 1999

Sorry for the wasted bandwidth, but I posted this last night (without 
a Subject) and did not receive any response.  I'm hoping this time 
around I might be luckier...

I am a relative newbie to XML, so please bear w/ me if this is a poor

It looks like everything in the DOM must be dealt w/ in the context of a
particular document. It seems you cannot drop one Document into another, or
even one DocumentFragment into another Document context. I have tried to do
the following... (using Microsoft's implementation of the DOM) 

   IXMLDOMDocument doc = (IXMLDOMDocument) new DOMDocument();
   IDOMDocumentFragment docFrag = doc.createDocumentFragment();

   IDOMElement userElem = doc.createElement("USER");
   userElem.setAttribute("TIMESTAMP", new Variant("123456") );

   docFrag.appendChild( userElem );

   doc.appendChild( docFrag );
   System.out.println( doc.getXml() );   // >>>> Yields the correct results
   IXMLDOMDocument doc2 = (IXMLDOMDocument) new DOMDocument();
   doc2.appendChild( docFrag );
   System.out.println( doc2.getXml() );  // >>>> Yields an empty string

It seems like this should work to me. Shouldn't we be able to cut and paste
between documents?? Or more important, shouldn't we be able to build up
documents compositionally?? I.e. compose Address 1 and Address 2 as
DocumentFragments (or as their own Documents -- with their own DTDs) 
and then drop these into, say, User (providing that the User DTD agrees).

I must be missing something here.
Thanks in advance,
-- Chris

Chris Berry            cberry at          512-231-1341     6850 Austin Center Blvd.      Austin, TX 78731

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