[xsd-users] DbXml update

[Boris Kolpackov]

Hi Michael,

Michael Coulman <michael.coulman at mac.com> writes:

> The DbXml upgrade from 2.3.x to 2.4.x (including update from Xerces-2.7
> to 2.8) removes DOM access.
> 
> Removed all C++ interfaces that used Xerces-C DOM, including:
> 	XmlDocument::setContentAsDOM()
> 	XmlDocument::getContentAsDOM()
> 	XmlValue::asNode()

Some time ago the DB XML folks have told me that they are considering
this.


> DbXml provides one work around for getContentAsDOM in their  
> xercesDomTranslator example code.
> 
> Similar logic might be used to replace the XSD dbxml/driver.cxx idiom
> 
>         // Create an object model from the document fragment.
>         //
>         auto_ptr<book> b (
>           new book (
>             *static_cast<xercesc::DOMElement*> (v.asNode ())));
> 
> by returning a *DOMNode from a method in xercesDomTranslator.
> 
> I'm stuck on what to do with the XSD dbxml/driver.cxx idiom
> 
>         // Update the document fragment from the object model.
>         //
>         *static_cast<xercesc::DOMElement*> (v.asNode ()) << *b;
> 

I took a look at the API changes and it seem that updates to fragments
of a document are not possible with the new XmlEventWriter mechanism.
That is, you can read/write the whole document, you can also read a
fragment, but you cannot write a fragment. I've written to the DB XML
folks to find out if they have plans to support this in the near
future. Will let you know what they say.

Boris