- From: Joseph Kesselman <keshlam@us.ibm.com>
- Date: Fri, 13 Sep 2002 13:46:10 -0400
- To: www-dom@w3.org
On Friday, 09/13/2002 at 10:25 MST, rayw@netscape.com (Ray Whitmer) wrote: > DOM Namespace nodes are clearly NOT created when the DOM element is > created. They're created when the XPath runs, which I think is fine; anything before that is "parse time" for XPath's purposes. The only thing which might make this distinction visible would be that we may produce new objects each time. HOWEVER -- remember that object identity is *not* the official way to test DOM node identity; that can only be done portably via the DOM L3 isSameNode() method. That could be appropriate jiggered to return true for namespace node objects created via two separate queries, if they declare the same prefix and namespace and if the ownerElements match (also conceptually tested via isSameNode()). Note that in XPath 2.0 current draft the question of ownership of namespace nodes pretty much goes away -- they allow it to be assigned fairly arbitrarily, so it _could_ be the ownerElement of the actual Attr this namespace came from. (Xalan takes that approach and trusts XPath 2.0 will bless it. Fact is, almost nobody uses the namespace axis and of those a vanishingly small number ever ask for the XPath-parent of a namespace node, so this deliberate divergence from XPath 1.0 makes very little real-world difference.) ______________________________________ Joe Kesselman / IBM Research
Received on Friday, 13 September 2002 13:46:44 UTC