XOM API for Processing XML with Java

["Bradley S. Huffman" <hip AT cs.okstate.edu>]

Elliotte Harold writes:

> XOM is limiting the contents of the returned Nodes object to the usual 
> XOM node types (Element, Attribute, Comment, Text, Document, etc.). the 
> question therefore arise what should I do when an XPath expression 
> return something else. In particular, it may return:
> 
> Double
> String
> Boolean
> Internal classes such as NamespaceNode and DocumentFragment
> 
> In particular, should XOM
> 
> 1. Throw an exception?

Yes. If the result contains anything other than nu.xom.Node/s then either
the query is incorrect or the user doesn't realize the methods are limited
and didn't take that into account. Throw an exception.

Brad