DATAID—Query Data ID

The DATAID assignment statement retrieves the data ID for the data set currently being edited and places it in a variable.

Syntax


Assignment statement syntax

>>-ISREDIT--(varname)-- = --DATAID-----------------------------><

varname: The name of a variable containing the data ID of the data set currently allocated for editing.

Description

The data ID is created by the LMINIT service to identify a data set.

If you begin an edit session with a data ID, the data ID is returned when you issue this command. If you begin an edit session without a data ID, then an LMINIT service obtains a data ID and returns it. On return from a top-level macro, the editor releases any data ID it has obtained.

For further information about the use of library access services, refer to the z/OS ISPF Services Guide.

Return codes

0: The data ID returned was passed to the editor
4: Data ID was generated by and is freed by the editor
8: A previously generated data ID was returned
20: Severe error

Examples

To store the data ID in variable &DID, and then find the member MEM1 of that data set by using the LMMFIND library access service:

ISREDIT (DID) = DATAID
ISPEXEC LMMFIND DATAID(DID) MEMBER(MEM1)
IF &LASTCC = 0 THEN ...