CODEWITHSUNDEEP
xmlxsdxsd-validation
gosnis
gosnis

Reputation: 11

Validating XML attribute with values enumeration including ""

I'm trying to validate an incoming XML. The XML has an attribute verb="". The XSD has an enumeration of the possible verb values and it doesn't include the "" option:

<xsd:attribute name="verb" use="required">
    <xsd:simpleType>
        <xsd:restriction base="xsd:NMTOKEN">
            <xsd:enumeration value="Create" />
            <xsd:enumeration value="Delete" />
            <xsd:enumeration value="Retrieve" />
            <xsd:enumeration value="RetrieveByContent" />
            <xsd:enumeration value="Update" />
        </xsd:restriction>
    </xsd:simpleType>
</xsd:attribute>

I tried to add <xsd:enumeration value="" /> but it didn't work. Can anyone help me with fixing the XSD?

Thanks in advance.

Upvotes: 1

Views: 775

Answers (1)

Aravind Yarram
Aravind Yarram

Reputation: 80176

You should use xsd:string (or xsd:token whichever makes more sense) as the base instead of xsd:NMTOKEN. xsd:NMTOKEN, xsd:NMTOKENS etc are provided for compatibility with DTD.

Upvotes: 2

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