This function extracts arbitrary values from BPEL variables.

Signature:

ora:instanceOf(an_xpath_expression, 'typeQName')

Arguments:

• an_xpath_expression: An XPath expression that returns an element.

• typeQName: The QName of a globally-declared XSD type.

Property IDs:

• namespace-uri: http://schemas.oracle.com/xpath/extension

• namespace-prefix: ora