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

NetView Pipelines Device Drivers
298 Programming: Pipes
Partial (page 1) output from PIPSTEMA looks like this. Output continues until the
contents of BFRUSE.54 are displayed.
NCCF NETVIEW CNM01 OPER6 09/20/10 16:49:11
* CNM01 16:49:11 PIPSTEMA
C CNM01 16:49:11 BFRUSE.0 IS 54
C CNM01 16:49:11 BFRUSE.1 IS IST097I DISPLAY ACCEPTED
C CNM01 16:49:11 BFRUSE.2 IS IST350I DISPLAY TYPE = BUFFER POOL DATA
C CNM01 16:49:11 BFRUSE.3 IS IST920I IO00 BUFF SIZE 00567 EXP
.
INCREMENT 00007
Processing steps:
1. The NETVIEW stage processes the DISPLAY command and, instead of
displaying messages on the screen, writes them to the pipeline.
2. The CORRWAIT stage waits 25 seconds for each related message.
3. The TOSTRING stage selects all messages up to and including the last line of
an MLWTO in which the text string END is found.
4. The STEM stage writes the messages to variables named BFRUSE1, BFRUSE2,
BFRUSE3, and so forth. BFRUSE0 contains an integer count of the total number
of stem variables.
Example 2: Reading from Variables Using STEM
This example shows how to use the STEM stage, as a first stage, to read variables
into the pipeline. It is shown in a REXX command list named PIPSTEMB.
/* REXX COMMAND LIST PIPSTEMB */
ADDRESS NETVASIS
A.1= ’APPLES’
A.2= ’PEARS’
A.3= ’ORANGES’
A.0=3
’PIPE STEM A. | CONSOLE’
IF RC ¬= 0 THEN
SAY ’RC=’RC’ FROM PIPE ’
EXIT
Output from PIPSTEMB follows:
NCCF NETVIEW CNM29 OPER6 03/01/10 19:16:00
* CNM29 PIPSTEMB
| CNM29 APPLES
| CNM29 PEARS
| CNM29 ORANGES
Processing steps:
1. The STEM stage reads the variables A.1, A.2, and A.3 into the pipeline. Each
variable read is changed into a message. The variable A0 indicates that there
are 3 variables to be read.
2. The CONSOLE stage displays the messages.
Example 3: Writing a Null Message to a Variable Using STEM
This is an example of using the STEM stage to write a null message in the pipeline
to a variable. It is shown in a REXX command list called PIPSTEMC.