XOM API for Processing XML with Java

[lenards AT email.arizona.edu]

I knew I should have waited to send my message...

I found a snippet of XOM code with a google search so I tried it:

Element root = new Element(PageContentElements.ROOT_RESPONSE, NS);
root.addNamespaceDeclaration("xsi",
    "http://www.w3.org/2001/XMLSchema-instance";);
root.addAttribute(new Attribute("xsi:schemaLocation",
    "http://www.w3.org/2001/XMLSchema-instance";,
    "http://www.foo.org/transfer/content/0.1
http://services.foo.org/schema/content_0_1.xsd";));

No exception and the attribute is added as expected.

I thought the code felt redundant.  So I pulled out the namespace decl:

Element root = new Element(PageContentElements.ROOT_RESPONSE, NS);
root.addAttribute(new Attribute("xsi:schemaLocation",
    "http://www.w3.org/2001/XMLSchema-instance";,
    "http://www.foo.org/transfer/content/0.1
http://services.foo.org/schema/content_0_1.xsd";));

And that works too.

From a blackbox perspective, I'm still a little puzzled as to why the 
code I had
was caused an exception?

What's the idea behind that code causing an exception?

I guess I should just look at the source... but I'm curious the thoughts of
those on the list.

Andy