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   Re: DOM Confusion

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  • From: Ray <ray@guiworks.com>
  • To: mcc@arbortext.com (Mike Champion)
  • Date: Thu, 30 Apr 1998 10:51:04 -0600 (MDT)

Another DOM question...

The Element interface is defined to inherit from Node

XMLNode is defined to inherit from Node.

However, if one is operating on an XML document, is the Element
interface assumed to inherit from XMLNode?

We seem to have the case

(DOM Core Mode)
interface Element : Node
interface Text : Node

(DOM XML Mode)
interface Element : XMLNode
interface Text : XMLNode
interface XMLNode : Node

It seems like there is a conflict? The problem is,
there are two object hierarchies, with identical names
and packages (org.w3c.dom), but which have different
base classes.

Multiple inheritence would work if XMLNode didn't extend Node,
as in

public interface Element extends Node, XMLNode

But if it does, then all we need is

public interface Element extends XMLNode

which to me indicates that XMLNode is best done away with
and subsumed into Node.


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