Name
XMLType.isSchemaValid — Validates the given XMLType instance against an arbitrary XML schema, returns 1 if successful, 0 if errors are detected.
Synopsis
XMLType.isSchemaValid
(
|
in schema_url varchar , |
in
top_element_name
varchar
); |
Description
The function validates the given XMLType instance against the XML
schema located at schema_url
. The name of the
current node of the XML entity should match top_element_name
if it is specified.
The schema_url
is optional for schema based
instances: the default value is the URI of the associated schema of the
instance. For non-schema based instances the schema_url
is required, an error is signalled otherwise.
The function does not use or modify internal "validated"
flag that is e.g. used by XMLType.schemaValidate()
.
It is true even if the given schema_url
is equal to the URI
of own schema of the instance.
Parameters
schema_url
The URI of the schema to apply.
top_element_name
The allowed name of top level element of the instance.
Return Types
The function returns 1 if the validation is passed, 0 if it is failed.
Examples
Example 24.557. Failed schema validation
The example creates an XMLType instance that is a document with a single element node"bad"
and tries to validate it against XMLschema "file://xmlschema/test0001/clean.xsd" that does not match actual content of the document.
The call of isSchemaValid()
returns zero indicating failed validation.
select XMLType('<bad />', 'file://xmlschema/test0001/clean.xsd').isSchemaValid()
callret
INTEGER
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0
1 Rows. -- 00000 msec.