Analyzing patterns with the member list filter exit

Here are the exit parameters and return codes associated with analyzing patterns.

Exit parameters

PDF uses these parameters to communicate with the exit routine when it is invoked to verify/modify the pattern that you entered either on a member list entry panel, as a parameter to an PDF service, or with the SELECT primary command.

Table 1. Details of the parameters used to communicate with the member list filter exit when it is invoked to verify or modify a pattern
Parameter	Type	Len	Description	Modifiable
CODE	FIXED	4	Code that indicates that this is the analyze pattern call. Call=1.	No
PATTERN	CHAR	8	Pattern as entered by the user	Yes

Return codes

These return codes are expected from the member list filter exit routing to indicate the described conditions.

0: The pattern that you entered generates the member list.
4: The pattern is updated by the member list exit program and generates the member list.
8: The member list request or SELECT command request is canceled and a conditional SETMSG is issued.