XML Schema simpleType question

[SanDiegolinus]

The following seems to be invalid wrt having a simpleType nested in a complexType...How do I specify the ssnType ?

<xs:complexType name=&quot;PersonType&quot;>
<xs:sequence>
<xs:element name=&quot;SSN&quot; type=&quot;SSNType&quot;>
<xs:simpleType name=&quot;SSNType&quot;>
<xs:restriction base=&quot;xs:string&quot;>
<xsattern value=&quot;[0-9]{9}&quot;/>
</xs:restriction>
</xs:simpleType>
</xs:element>
.....

 

[Nosferatu]

The cleanest way to do this is to specify separately the simple type you are using, and then define the element as restriction or extension of that simple type:

<xs:complexType name=&quot;PersonType&quot;>
<xs:sequence>
<xs:element name=&quot;SSN&quot; type=&quot;SSNType&quot;>
<xs:restriction/extension> base=&quot;SSNType&quot;>
<!-- ... add something here -->
</xs:restriction/extension>
</xs:element>
.....
<xs:simpleType name=&quot;SSNType&quot;>
<xs:restriction base=&quot;xs:string&quot;>
<xsattern value=&quot;[0-9]{9}&quot;/>
</xs:restriction>
</xs:simpleType>

Something like this should do it. [red]Nosferatu[/red]
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