When the Web service returns a SOAP fault, OpenEdge responds depending on how the request is coded. As with ABL errors, if you do not specify the NO-ERROR option on a RUN statement that invokes a Web service operation or if the operation is invoked using a user-defined function, OpenEdge converts the SOAP fault into a standard ABL error message displayed as follows:
The error box displays the operation that generated the SOAP fault and the contents of the <faultstring> element in the SOAP fault message.
If the statement that invokes a Web service operation traps an error using the NO-ERROR option, this message and the information for any SOAP fault detail appears in the ERROR-STATUS system handle, and as with all ABL errors remains available until the next statement is invoked using the NO-ERROR option. The following table lists the ERROR-STATUS handle attribute that help you to detect and return the information for a SOAP fault. All other attributes and methods on this handle work as they do for any ABL error condition.
Table 36. ERROR-STATUS handle attributes
Attribute
Type
Description
ERROR
LOGICAL
Indicates that an ERROR condition was returned as a result of processing a Web service request
ERROR-OBJECT-DETAIL
HANDLE
References the SOAP-fault object for any Web service request that returns a SOAP fault trapped using ABL NO-ERROR option
Once you have detected an error (ERROR-STATUS:ERROR=TRUE), you can determine if it is the result of a SOAP fault using the ERROR-OBJECT-DETAIL attribute. If a SOAP fault caused the error, this attribute returns a handle to a SOAP-fault object containing the SOAP fault information. Otherwise, it has the Unknown value (?).
Note that Web service operations that are invoked as user-defined functions do not raise the ERROR condition. For a SOAP fault resulting from an operation invoked as a user-defined function, ERROR-STATUS:ERROR is FALSE. But, in this case, ERROR-STATUS:NUM-MESSAGES is greater than zero.
