Custom error code when XSD validation fails?

[Artie]

Hi,

Is there any way to tell an XSD Schema that you want custom error
codes for particular validation failures in an XML document?

To show what I mean, here's an example:

XSD excerpt:

<xs:element name = "EmployeeID">
<xs:simpleType>
<xs:restriction base = "xs:string" >
<xs:length value = "3"/>
<xs:pattern value = "[0-9]{3}"/>
</xs:restriction>
</xs:simpleType>
</xs:element>

XML excerpt:

<EmployeeID>1234</EmployeeID>

When the XML fails to validate against its XSD element, I want, say,
error code 1000 to be returned from the validator for further parsing
in my C# code - can this be done easily?

(I'm thinking along the lines of having an element like
<xs:customErrorCode = 1000along side each restriction.)

Any help very much appreciated

Artie

[Martin Honnen]

Artie wrote:

When the XML fails to validate against its XSD element, I want, say,
error code 1000 to be returned from the validator for further parsing
in my C# code - can this be done easily?

(I'm thinking along the lines of having an element like
<xs:customErrorCode = 1000along side each restriction.)

Any help very much appreciated

There is no such element as xs:customErrorCode but the schema language
allows for custom attributes in a different namespace than the schema
namespace (http://www.w3.org/2001/XMLSchema). And there are annotations
allowed (http://www.w3.org/TR/xmlschema-1/#cAnnotations) so that a
schema can have additional information, both for human readers and for
automated processing. The schema object model (SOM) in the .NET
framework allows you to access the attributes
(http://msdn2.microsoft.com/en-us/lib...ttributes.aspx)
and the annotations
(http://msdn2.microsoft.com/en-us/lib...nnotation.aspx)

So you can put such information into your schema(s) and then extract
them when processing the schema.
--

Martin Honnen --- MVP XML
http://JavaScript.FAQTs.com/