XSD Definition for Enumerated Value

xsd

Solution

You can define an enumeration within the context of a simpleType.

 <xs:simpleType name="color" final="restriction" >
    <xs:restriction base="xs:string">
        <xs:enumeration value="green" />
        <xs:enumeration value="red" />
        <xs:enumeration value="blue" />
    </xs:restriction>
</xs:simpleType>
<xs:element name="SomeElement">
    <xs:complexType>
        <xs:sequence>
            <xs:element name="Color" type="color" />
        </xs:sequence>
    </xs:complexType>
</xs:element>

Problem

I'm stuck trying to define an XSD containing a field that can have only one of the following three values: - Green - Red - Blue Essentially, I want to define a strict enumeration at the Schema level. My First attempt appears wrong and I'm not sure about the "right" way to fix it. ``` <xs:element name="color"> <xs:complexType> <xs:choice> <xs:element name="green"/> <xs:element name="red"/> <xs:element name="blue"/> </xs:choice> </xs:complexType> </xs:element> ``` By using an automatic XML generator, it treats those element names as string objects: ``` <xs0:color> <xs0:green>text</xs0:green> </xs0:color> ```

Original source