Say I have the following XML file:
<a xmlns:foo="http://foo"></a>
I need to check whether the prefix foo is bound to http://foo or not. Whereby not bound could indicate that the said prefix does not exist at all or is bound to some other namespace URI.
I already have a library that takes a Document object and an XPath expression and returns a (possibly empty) List of Nodes that exist at that XPath.
So what would be an expression that would check for the presence of a prefix foo in the top-most element (document element) bound to the namespace http://foo and that would yield one node for the above XML and zero nodes for the following XMLs:
<a xmlns:fooX="http://foo"></a>
and
< xmlns:foo="http://fooX"></a>
I tried, as a first step, to just get the value of that attribute using:
/*[@*[local-name()='foo']]
... but it seems that prefix-binding attributes are handled differently from "normal" attributes.
