IBM Tivoli NetView for z/OS Programming: Pipes - IBM notice

Examples
v Multiple streams cannot be input to a single STEM stage. The FANIN stage can
be used to collapse multiple streams into a single output stream, which can be
used as input to STEM. See “PIPE FANIN” on page 125 for more information
about FANIN.
v If the value of the count variable (name with '0' appended) was not set for TASK
and COMMON variables, the value of the count variable is null. However, a
null value is handled the same way as if the count variable had been set to zero
(0).
Example: Writing to Stemmed Variables
If a NetView command list named PRIME runs as a result of NetView automation,
the command list drives a second command list named SECND. You can give
SECND the same access to the message that called PRIME, and save all output
data to PRIME's variable SSLT (in REXX), by entering:
PIPE SAFE *
| NETVIEW SECND
| STEM SSLT.
Example: Saving the Count of Records Processed
In this example, the CNMCMD file is read into the pipeline and saved to the
STEM variable named A. When the pipeline completes, the record count in A0
indicates the number of lines read from CNMCMD.
/* REXX COMMAND LIST */
’PIPE < CNMCMD INCL’,
’| STEM A’
SAY ’THERE ARE ’ A0 ’ LINES IN CNMCMD.’
PIPE STEM and PIPE $STEM
For examples of using $STEM, see the WINDOW command list (CNME1505).
Chapter 2. Pipeline Stages and Syntax 229