Hey,
I'm trying to create an xml schema, which enables an attribute value to be stored as an GUID in native format. I could set it up a string, but it would be nice to store it as a real GUID. Any ideas how to do it.
regards scope_creep.
A:
XML basically contains only strings, although XSD also defines certain other primitive types. GUID, however, is not among them.
You can define your own schema for a GUID type. Lots of people have done this. Here's how the Microsoft OneNote team did it: http://msdn.microsoft.com/en-us/library/aa203890(office.11).aspx.
Mark Seemann
2009-06-21 20:17:32
I saw the article for that as well.How do you link the SimpleType into your element, attribute xml, say<rule ruleguid="10122-xxx-...."/>
scope_creep
2009-06-21 21:24:02
+2
A:
You can define your own custom simple type "GUID" by restricting a string using a regular expression like this:
<xs:simpleType name="GUID">
<xs:restriction base="xs:string">
<xs:pattern value="([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{12})|(\{[0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{12}\})"/>
</xs:restriction>
</xs:simpleType>
Cheers! Marc
marc_s
2009-06-21 20:20:52
Well i've tried that but it keeps coming back with a 'The Pattern constraint failed.' in file: error message when it encounters it.
scope_creep
2009-06-21 21:16:02
Odd... we have this in production and everything works just fine.... when and how are you using it, and where does the error occur?
marc_s
2009-06-22 04:59:41
A:
Hi, I've sussed it out. Sometimes it helps to read the docs. This is how it will work.
xs:simpleType name="GUID">
<xs:element name="ruleident">
<xs:complexType>
<xs:attribute name="ruleGuid" >
<xs:simpleType>
<xs:restriction base ="GUID">
</xs:restriction>
</xs:simpleType>
</xs:attribute >
</xs:complexType >
scope_creep
2009-06-21 21:46:07