Oxygen XML Forum

Posted: **Fri Jul 16, 2004 4:28 pm**

Hi. I'm trying to work a lot with MPEG-7 data, and in validating the (nearly) XML Schemas involved, it chokes with a simple error:

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	E unknown protocol: urn

on this code:

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<schema elementFormDefault="qualified"

    targetNamespace="urn:MPEG:mpeg7:schema:2001"

    xmlns="http://www.w3.org/2001/XMLSchema"

    xmlns:mpeg7="urn:MPEG:mpeg7:schema:2001" xmlns:xml="http://www.w3.org/XML/1998/namespace">

...etc.

As I'm sure you know, URNs are not a protocol at all, but another form of URI. Is there a way of working around this? Can this be a feature request?
[working with Oxygen 4.2]

Posted: **Fri Jul 16, 2004 6:36 pm**

Hi,

The error is does not appear from the code you posted, for instance the following is validated by oXygen:

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<?xml version="1.0" encoding="UTF-8"?>

<schema elementFormDefault="qualified"

    targetNamespace="urn:MPEG:mpeg7:schema:2001"

    xmlns="http://www.w3.org/2001/XMLSchema"

    xmlns:mpeg7="urn:MPEG:mpeg7:schema:2001" xmlns:xml="http://www.w3.org/XML/1998/namespace">



    

</schema>

I guess there is some import/include in the schema at some point that use a URN in as the location hint.

Best Regards,
George

Posted: **Mon Jul 19, 2004 12:36 pm**

wow! perfect guess. So sorry for the false alarm and unchecked test case.

Oxygen XML Forum

URN support?

URN support?