IBM S544-5351-03 manual Appendix B. User Exits, Processing Phases, User Exit Before

Appendix B. User Exits

This appendix describes the user exits that are referred to in ªDefining User Exit Before and Middleº on page 94 and ªDefining User Exit Afterº on page 96.

Processing Phases

Following is a description of the processing phases the APU print engine goes through in general and when processing the user exits:

Table 3. APU Print Engine Processing Phases

		Modified Version	Pre-Modification
Step	Description	Program Name	Equivalent
1	Call the user exit program	EXTBEF	None
	ªbeforeº
2	Set up the internal environment	INZENV	INZENV
	using the print definition.
3	Create the internal spool	CPYSPLF	CPYSPLF
	database using the CPYSPLF
	command.
4	Call the ªmiddleº user exit.	EXTMID	None
5	Process the input file and create	GENAFP	GENAFP
	an AFPDS output database.
6	Convert the database to the	PRTAFPDTA	PRTAFPDTA
	spooled file using the
	PRTAFPDTA command.
7	Call the ªafterº user exit	EXTAFT	None
	program.
8	Perform post-processing action	INPACT	None
	on the SCS spooled file.

User Exit Before

The USER EXIT BEFORE program includes the library the program is in and a 20 character user parameter to be passed to the exit program. This program (phase EXTBEF) will be executed before the print engine starts to initialize (phase INZENV, which sets up the internal environment such as variables, tables, and so on) using the print definition.

Following is the parameter structure passed by the APU print engine if a user exit is called for BEFORE processing is initialized:

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