XMLType.schemaValidate — Validates the schema based XMLType
instance against its schema and signals an error in case of failed
The member function signals an error if called for a non-schema
based instance. If an instance is schema-based but the validation
has already been done, the call has no effect. Otherwise, a
schema-based instance is validated against its schema. If the
validation fails, an error is signalled. If the validation is
successful then a special internal "validated"flag is set.
The function returns a string that contains a validation log if
an instance has not been validated before, otherwise it returns
null or signals an error.
The example creates an XMLType instance that is a document with
a single element node"bad" and declared schema
"file://xmlschema/test0001/clean.xsd" that does not match actual
content of the document. The call of schemaValidate() signals an error.
select XMLType('<bad />', 'file://xmlschema/test0001/clean.xsd').schemaValidate();
*** Error 42000: [Virtuoso Driver][Virtuoso Server]Top-level element name <q> is unknown
at line 76 of load 'XmlType.sql':
select XMLType('<bad />', 'file://xmlschema/test0001/clean.xsd').schemaValidate()