Examples

The sample segment and field exits provided are supported only for MFS source that uses the option 1 and 2 formats. All sample files are located in /mto-ims/ivp by default.

Field Exit Routine

We provide a sample program, DFSME000.cbl, containing a field exit routine. It is a COBOL implementation of the DFSME000 Assembler MFS field edit exit routine provided with the IMS/ESA product. This program contains comments further describing the use of input message field exits. The following is an excerpt from the Linkage Section of DFSME000.cbl, showing the parameter list format:

       01  FIELDEXIT-PARMS.
           05  FLDFLAG             PIC  X(01).
           05  FILLER              PIC  X(01).
           05  FLDELTH             PIC  X(01) COMP-X.
           05  FLDVECT             PIC  X(01) COMP-X.
           05  FLDLTH              PIC  X(04) COMP-X.
           05  FLDADDR             USAGE POINTER.

Segment Exit Routine

We provide a sample program, DFSME127.cbl containing a segment exit routine. It is a COBOL implementation of the DFSME127 Assembler MFS segment edit exit routine provided with the IMS/ESA product. The following is an excerpt from the Linkage Section of DFSME127.cbl, showing the parameter list format:

       01  DFSME-PARM.
           05  DFSME-FLAG              PIC X(01).
           05  FILLER                  PIC X(01).
           05  FILLER                  PIC X(01).
           05  DFSME-VECTOR            PIC X(01)   COMP-X.
           05  DFSME-LTH               PIC X(04)   COMP-X.
           05  DFSME-ADDR              POINTER.
           05  DFSME-FLDEXIT-RC        PIC X(04)   COMP-X.
           05  DFSME-NEXT-MODNAME      PIC X(08).
           *>  NEXT FIELD IS IN COBOL PARM BLOCK ONLY
           05  DFSME-R1-RETURN         PIC X(04)   COMP-X.