Ok, thanks! I was afraid of that, but I just wanted to confirm.
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Browse All TopicsI would like to know if it is possible to create a schema that can enforce the name of a stylesheet to be applied to an instance of that schema.
For example, let's say I have a schema that defines "Bookshelf". "Bookshelf" will contain "Books". If I create a stylesheet called "PrettyPrint.xsl" for an instance of "Bookshelf", inside the instance document, I would include a line such as
<?stylesheet type="text/xsl" href="PrettyPrint.xsl" ?>
Is there a way to craft the schema that I could ensure that my instance document would have a line such as the above (in other words, have it as a required element), or fail it otherwise?
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by: GertonePosted on 2009-11-05 at 02:07:52ID: 25748004
Process Instructions are constructs in an XML document that are considered as indications to a specific processor on how to handle the document or parts of it. They are meant to be ignorable by any processor that doesn't know how to handle it.
There is no option in any schema language I know to enforce a Process Instruction at a certain location or with a certain value,
not even RelaxNG or Schematron.
Schema are for validating structure and content, PI's are considered outside that notion
The best option I see is that you make an element out of your PI. That you tell the schema to validate the XML with that one extra element and have a simple pass using XSLT that keeps the XML intact but creates a PI from that one special element.
Sounds to me your best option