1. Developing SOA Applications with Oracle SOA Suite
  2. Using the BPEL Process Service Component
  3. Using Fault Handling in a BPEL Process
  4. Throwing Faults with Assertion Conditions
  5. What You May Need to Know About Assertion Conditions
  6. Expressions Not Evaluating to an XML Schema Boolean Type Throw a Fault

Expressions Not Evaluating to an XML Schema Boolean Type Throw a Fault

If the assertion condition XPath expression does not evaluate to an XML schema boolean type, a bpelx:postAssertFailure fault is thrown from the activity. An event in the instance audit trail is also logged indicating the error. The following example provides details: 

<bpelx:postAssert expression="bpws:getVariableData( 'crOutput', 'payload',
 '/tns:rating' ) > 0" ... />

<bpelx:postAssert expression="custom:validateRating()" ... />

<bpelx:postAssert xmlns:fn='http://www.w3.org/2005/xpath-functions'
 expression="fn:false()" ... />

Analysis of the assertion expression is performed by the BPEL compiler and errors are reported if an expression does not evaluate to an XML schema boolean type. For custom XPath functions, this type of analysis is not performed.