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RE: Validating against the correct root element using library

• To: "'Fraser Crichton'" <fraser.crichton@s...>,<xml-dev@l...>
• Subject: RE: Validating against the correct root element using library schemas
• From: "Michael Kay" <mike@s...>
• Date: Wed, 18 May 2005 22:00:26 +0100
• In-reply-to: <428BA965.2030400@s...>
• Thread-index: AcVb6t9+F/odkIcxS+WjeeFapg3tvwAARnHA

> My question is how can I ensure that my incoming XML message has the 
> correct root element and is not simply a valid fragment?

The specs say that you can request validation against a specific element
declaration or a particular type definition. Whether products support that
option, and via what API, is a different question (and the answer depends on
the product).

If you're using a schema-aware XSLT 2.0 processor you can do:

<xsl:template match="/">
 <xsl:if test=". instanceof schema-element(purchase-order)">
   ...

Michael Kay
http://www.saxonica.com/

• References:
  • Validating against the correct root element using library schemas
    • From: Fraser Crichton <fraser.crichton@s...>

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