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RE: [xsl] In XPath 2.0 can my XSLT program validate the input and check whether the validation succeeded?


Subject: RE: [xsl] In XPath 2.0 can my XSLT program validate the input and check whether the validation succeeded?
From: "G. Ken Holman" <gkholman@xxxxxxxxxxxxxxxxxxxx>
Date: Sat, 20 Jul 2013 16:41:58 -0400

But I should have checked the specification before even making my second suggestion.

  http://www.w3.org/TR/2007/REC-xpath20-20070123/#id-castable
  "The target type must be an atomic type "

... so since you are checking a structure, my second suggestion won't work either because the right-hand side cannot be a structure. I guess that is why it was my habit to use string(.) on the left hand side.

Now, "instance of" takes a sequence type:

http://www.w3.org/TR/2007/REC-xpath20-20070123/#id-instance-of

... but as you say, there are no type annotations on your input, so I don't think ". instance of element(Book, BookType)" will work for you.

I think you may be stuck.

. . . . . . . Ken

At 2013-07-20 16:35 -0400, I wrote:
At 2013-07-20 20:13 +0000, Costello, Roger L. wrote:
>>         data(.) instance of element(Book, BookType)
>>
> Have you tried "string(.) castable as element(Book, BookType)"?

Hi Ken, yes I have tried that and the results are the same.

Ouch! I should have said ". castable as element( Book, BookType )" because of course a string cannot have structure. But an element can, so if your current node is an element, then you should check if the node is castable as.


Please forgive my slip in my haste.

. . . . . . . Ken


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