Oxygen XML Forum

Posted: **Fri Aug 20, 2004 7:06 pm**

Hi,
I've got al list of possible combinations of brands and models
I want to use xsd to verify if the combination is ok
can I do this using XSD?
thanks

example:
xsd:
<?xml version="1.0"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">
<xs:element name="CAR">
<xs:complexType>
<xs:all>
<xs:element name="BRAND" />
<xs:element name="MODEL" />
</xs:all>
</xs:complexType>
</xs:element>
</xs:schema>

xml:
<CAR>
<BRAND>MASERATI</BRAND>
<MODEL>DB9</BRAND>
</CAR>

Posted: **Sat Aug 21, 2004 5:13 am**

Hi,

AFAIK you cannot do that with XML Schema. You can check only that an element contains values in a specified set if you restrict the values using enumeration for instance:

Code: Select all


<?xml version="1.0"?>

<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">

  <xs:element name="CAR">

    <xs:complexType>

      <xs:all>

        <xs:element name="BRAND">

          <xs:simpleType>

            <xs:restriction base="xs:string">

              <xs:enumeration value="MASERATI"/>

              <!-- add all your possible values here -->

            </xs:restriction>

          </xs:simpleType>

        </xs:element>

        <xs:element name="MODEL">

          <xs:simpleType>

            <xs:restriction base="xs:string">

              <xs:enumeration value="DB9"/>

              <!-- add all your possible values here -->

            </xs:restriction>

          </xs:simpleType>

        </xs:element>

      </xs:all>

    </xs:complexType>

  </xs:element>

</xs:schema>

Oxygen also supports Relax NG schemas. Relax NG should allow you to check brands/models. Also as an alternative you may consider writting an XSLT to check this.

Best Regards,
George

Oxygen XML Forum

XSD combining 2 elements

XSD combining 2 elements