MPE/iX Commands Reference Manual (32650-90877)

ManualsBrandsHP ManualsSoftwareMPE/iX 6.5 Operating System

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Chapter 12 481

Command List X

Commands SAVE thru SHUTQ

The system-reserved JCWs are HPMINUTE, HPHOUR, HPDAY, HPDATE, HPMONTH, and HPYEAR.

They contain system-assigned minute, hour, day, date, month, and year information. If the

user attempts to assign values, an error message is displayed. You can retrieve the values

in these JCWs with the FINDJCW intrinsic. The values can also be tested if the JCW is used

with an IF, WHILE, SETJCW, SETVAR, or CALC command. The names of the system-reserved

JCWs are reserved.

The following describes system-reserved JCWs and possible values:

HPDAY Day of the week. The possible integers are 1 through 7. Sunday is

indicated by 1. Saturday is indicated by 7.

HPDATE Day of the month. The possible integers are 1 through 31.

HPMONTH Month of the year. The possible integers are 1 through 12. January is

indicated by 1.

HPYEAR Year of the century. The possible integers are 00 through 99.

HPHOUR Hour of the day. The possible integers are 0 through 23.

HPMINUTE Minute of the hour. The possible integers are 0 through 59.

Conditional Execution Using JCWs

JCWs are typically used to control the ﬂow of batch jobs, based on events that take place

within the job. You can use the MPE/iX IF/THEN (ELSE/ELSEIF), ENDIF, and

WHILE/ENDWHILE statements to test JCW values.

The following example illustrates a conditional execution function. The sample job runs a

program that edits, veriﬁes, and counts valid transactions (CHEKPROG). If no fatal errors

occur, the job runs the program SHIPPROG, which schedules shipments. The job then runs

FINALRPT, which produces a ﬁnal report. If fatal errors do occur, the CHEKPROG sets the

value of the JCW CHEKPROGSTAT to FATAL, and SHIPPROG is not run. Instead, ERRORRPT is

run, which produces an error report. A ﬁnal report is also produced by FINALRPT.

You can use the SHOWVAR command to display the value of any speciﬁed variable or any

group of variables, including JCW type variables. You can display the contents of a

system-deﬁned JCW with the SHOWJCW command only if you specify the

jcwname

In the following example the CONTINUE command prevents an abort in case of errors; the

RUN CHEKPROG edits, veriﬁes, and counts valid transactions; the IF command speciﬁes that

if no fatal errors occur, schedule shipments; the RUN command schedules the shipments;

the ELSE command produces the error report and resets the JCW to 0; and the RUN

command produces a ﬁnal report:

!SETJCW CHEKPROGSTAT=OK

!CONTINUE

!RUN CHEKPROG

! IF CHEKPROGSTAT<FATAL THEN

! RUN SHIPPROG

! ELSE

! SHOWJCW CHEKPROGSTAT

! RUN ERRORRPT

!ENDIF

!RUN FINALRPT