Name
XMLType.schemaValidate — Validates the schema based XMLType instance against its schema and signals an error in case of failed validation.
Synopsis
XMLType.schemaValidate
(
|
); |
Description
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.
Return Types
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.
Examples
Example 24.559. Failed schema validation
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()