Runs the super procedure version of the current internal procedure.
The RUN SUPER statement must appear only within an internal procedure, but can appear anywhere within the internal procedure. If the RUN SUPER statement appears outside an internal procedure, the compiler reports an error.
A parameter of the super procedure. The parameters of the super procedure must have the same signature (number of parameters, and type and mode of each) as the parameters of the current internal procedure. You can, however, adjust a parameter's value.
For the parameter syntax, see the Parameter passing syntax reference entry.
Suppresses ABL errors or error messages that would otherwise occur and diverts them to the ERROR-STATUS system handle. If an error occurs, the action of the statement is not done and execution continues with the next statement. If the statement fails, any persistent side-effects of the statement are backed out. If the statement includes an expression that contains other executable elements, like methods, the work performed by these elements may or may not be done, depending on the order the AVM resolves the expression elements and the occurrence of the error.
If you do not specify the NO-ERROR option and the super procedure version of the internal procedure does not exist, the AVM generates an error message:
To check for errors after a statement that uses the NO-ERROR option:
If the statement does not include the NO-ERROR option, you can use a CATCH end block to handle errors raised by the statement.
Some other important usage notes on the NO-ERROR option:
The following example consists of three procedure files: a main routine, a driver, and a third procedure file that becomes a super procedure of the driver.
The following main routine, procedure file r-pomain.p, runs the driver procedure persistently:
r-pomain.p
DEFINE VARIABLE h AS HANDLE NO-UNDO. DEFINE VARIABLE a AS CHARACTER NO-UNDO. FUNCTION sample2 RETURNS CHARACTER (INPUT-OUTPUT a AS CHARACTER) IN h. RUN r-podrvr.p PERSISTENT SET h. RUN sample1 IN h (INPUT-OUTPUT a). MESSAGE a VIEW-AS ALERT-BOX. a = "". MESSAGE sample2(a) VIEW-AS ALERT-BOX. |
The following driver, procedure file r-podrvr.p, runs the third procedure file persistently, makes it a super procedure of itself, defines the internal procedure sample1, and defines the user-defined functions sample2, GetPartName, and SetPartName:
r-podrvr.p
DEFINE VARIABLE h AS HANDLE.DEFINE VARIABLE localPartName AS CHARACTER. FUNCTION SetPartName RETURNS INTEGER (INPUT a AS CHARACTER) FORWARD. /* Add a super procedure */ RUN r-posupr.p PERSISTENT SET h. THIS-PROCEDURE:ADD-SUPER-PROCEDURE (h). SetPartName("1998 Calendar"). PROCEDURE sample1: DEFINE INPUT-OUTPUT PARAMETER a AS CHARACTER NO-UNDO. a = a + "proc: Part name is: ". /* Invoke procedure sample1 in the super procedure. */ RUN SUPER (INPUT-OUTPUT a). END PROCEDURE. FUNCTION sample2 RETURNS CHARACTER (INPUT-OUTPUT a AS CHARACTER). a = a + "func: Part name is: ". /* Invoke function sample2 in the super procedure. */ SUPER (INPUT-OUTPUT a). RETURN a. END FUNCTION. FUNCTION GetPartName RETURNS CHARACTER (): RETURN localPartName. END FUNCTION. FUNCTION SetPartName RETURNS INTEGER (INPUT partname AS CHARACTER): localPartName = partname. END FUNCTION. |
The following third procedure file, r-posupr.p, defines a new version of the internal procedure sample1 and a new version of the user-defined function sample2:
r-posupr.p
/* r-posupr.p */ DEFINE VARIABLE h AS HANDLE NO-UNDO. FUNCTION GetPartName RETURNS CHARACTER () IN H. PROCEDURE sample1: DEFINE INPUT-OUTPUT PARAMETER a AS CHARACTER NO-UNDO. h = TARGET-PROCEDURE. a = a + GetPartName(). MESSAGE "TARGET-PROCEDURE is:" TARGET-PROCEDURE:FILE-NAME VIEW-AS ALERT-BOX. MESSAGE "SOURCE-PROCEDURE is:" SOURCE-PROCEDURE:FILE-NAME VIEW-AS ALERT-BOX. END PROCEDURE. FUNCTION sample2 RETURNS CHARACTER (INPUT-OUTPUT a AS CHARACTER): h = TARGET-PROCEDURE. a = a + GetPartName(). RETURN a. END. |
To start the example, run r-pomain.p from the Procedure Editor.