Subject: RE: [xsl] Request help in understanding: node instance of schema-element(node) From: "Costello, Roger L." <costello@xxxxxxxxx> Date: Sun, 27 Jan 2008 14:32:36 -0500 |
Michael Kay wrote: > You haven't shown the bit that you did wrong, which was almost certainly to > run the stylesheet against an unvalidated input document. With Saxon, you > request validation by using an option on the command line (-val for 8.9.0.4, > -val:strict for 9.0.0.n) Thanks Michael. You are correct, after adding the -val option my if-then-else statement performed as desired. So, as I understand it, by adding the -val option SAXON validates the XML input document against the XML Schema specified by the stylesheet: <xsl:import-schema schema-location="test.xsd"/> Correct? If validation fails, SAXON throws an error and aborts processing. If validation succeeds, then the stylesheet can be certain that the <test> element in the input document conforms to the test element declaration in the XML Schema. And the stylesheet can check whether validation occurred and succeeded by using this if-test: if (//test instance of schema-element(test)) then ... Correct? Thus, if the processor does not abort and the if-test fails it means: -- The input XML document was not validated against the XML Schema. There is no other reason for the if-test failing. Correct? The if-test is not requesting the processor perform run-time validation of the <test> element against the XML Schema. Correct? Do these comments correctly describe the state of affairs: if (//test instance of schema-element(test)) then (: the <test> element is what's expected, so operate on it :) else {: the <test> element may or may not be what's expected; proceed with caution :) Is this the proper way to check <test> before operating on it? if (//test instance of schema-element(test)) then //test * 2 else if (//test castable as xs:integer) then //test * 2 else 'Error' /Roger
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