While I know that schema awareness allows for matching of sub-types, leverage of default values defined in XSD, and a bunch of other things, I've recently his a problem which I would think is possible to solve, but I have no idea as to how it would be done in XSL...

If I have an input element that has a bunch of attributes, say:

<GeneralObject class="foo" displayName="" ...>

And from this element, I'm interested in creating an output element, say:

<foo displayName="" ...>

However, I only want to add attributes that are valid for the given output type, and I cannot restrict (fix) my input content. Is there a way to do a schema look-up to see if an attribute is valid for a given element before attempting to generate output? (In my example, assume that the schema for the foo element does not define an attribute named 'displayName'.)

Thanks,
John

'Every time I paint a floor without getting stuck in a corner, they throw me in a room with more corners and fewer doors.'

I have only limited experience with schema aware XSLT 2.0 but my current understanding is as follows:

With schema aware processing you could ask for validation of all or some of the nodes the stylesheet creates but I think the transformation fails if a node you asked to be validated is found not to be valid.

So that is all that is possible, you can ask for validation of the 'foo' result element the transformation creates and the transformation will either succeed if the element is found to be valid or the transformation will fail if the element is found to be invalid.

__________________
Martin Honnen
Microsoft MVP (XML, Data Platform Development) 2005/04 - 2013/03
My blog

I suppose that as a last-case option, I could attempt to generate an extension to XSL to perform a check. However, I'd much prefer to use standard functions.