How does one restrict xml with an XML Schema?
- by John
Hello,
I want to restrict xml with a schema to a specific set. I read this tutorial
http://www.w3schools.com/schema/schema_facets.asp
This seems to be what I want. So, I'm using Qt to validate this xml
<car>BMW</car>
Here is the pertinent source code.
QXmlSchema schema;
schema.load( QUrl("file:///workspace/QtExamples/ValidateXSD/car.xsd") );
if ( schema.isValid() ) {
QXmlSchemaValidator validator( schema );
if ( validator.validate( QUrl("file:///workspace/QtExamples/ValidateXSD/car.xml") ) ) {
qDebug() << "instance is valid";
} else {
qDebug() << "instance is invalid";
}
} else {
qDebug() << "schema is invalid";
}
I expected the xml to match the schema definition. Unexpectedly, QxmlSchemaValidator complains.
Error XSDError in file:///workspace/QtExamples/ValidateXSD/car.xml, at line 1, column 5: Content of element car does not match its type definition: String content is not listed in the enumeration facet..
instance is invalid
I suspect this is a braino. How does one restrict xml with an XML Schema?
Thanks for your time and consideration.
Sincerely,
-john
Here is the xsd from the tutorial.
<xs:element name="car">
<xs:simpleType>
<xs:restriction base="xs:string">
<xs:enumeration value="Audi"/>
<xs:enumeration value="Golf"/>
<xs:enumeration value="BMW"/>
</xs:restriction>
</xs:simpleType>
</xs:element>
