I've been trying to validate the current MathML schema and I'm getting the unhelpful error message "E Null" as a result. I've figured out that that means that a schemaLocation is missing (but agreed with others that this should be expanded into something that doesn't take so much research to figure out). Anyway, the line that is causing me trouble is: <xs:import/> This line is followed by the helpful comment "import any foreign namespace". Now I know that "This simply allows unqualified reference to foreign components with no target namespace without giving any hints as to where to find them." but the schema doesn't contain any such references as far as I can see and commenting out the line allows it to validate. Perhaps it would be more useful to get Oxygen to defer its disapproval until it finds a reference for which no definition exists? Or am I misunderstanding what is going on here. Steve
Hi Steve, Thanks for your message. Sure the <import/> should be validated, the XML Schema specification specifically allows it: <quote source="http://www.w3.org/TR/xmlschema-1/#composition-schemaImport"> NOTE: Since both the namespace and schemaLocation [attribute] are optional, a bare <import/> information item is allowed. This simply allows unqualified reference to foreign components with no target namespace without giving any hints as to where to find them. </quote> We already found the problem in oXygen and fix it. It was a bug in the catalog resolver that rised an exception when the resource to be resolved had all the fields set to null. Best Regards, George ------------------------------------------------------------- George Cristian Bina mailto:george@oxygenxml.com <oXygen/> XML Editor - http://www.oxygenxml.com/ ----- Original Message ----- From: "Steve Lay" <S.W.Lay@ucles-red.cam.ac.uk> To: <oxygen-user@oxygenxml.com> Sent: Wednesday, August 04, 2004 5:07 PM Subject: [oXygen-user] <import/> and validation
I've been trying to validate the current MathML schema and I'm getting the unhelpful error message "E Null" as a result. I've figured out that that means that a schemaLocation is missing (but agreed with others that this should be expanded into something that doesn't take so much research to figure out).
Anyway, the line that is causing me trouble is:
<xs:import/>
This line is followed by the helpful comment "import any foreign namespace".
Now I know that "This simply allows unqualified reference to foreign components with no target namespace without giving any hints as to where to find them." but the schema doesn't contain any such references as far as I can see and commenting out the line allows it to validate.
Perhaps it would be more useful to get Oxygen to defer its disapproval until it finds a reference for which no definition exists?
Or am I misunderstanding what is going on here.
Steve _______________________________________________ oXygen-user mailing list oXygen-user@oxygenxml.com http://www.oxygenxml.com/mailman/listinfo/oxygen-user
participants (2)
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George Cristian Bina -
Steve Lay