In various situations, it is important to know if at least one record was selected after running the Open Query File (OPNQRYF) command. If no records were selected, you would want to take an appropriate action. I have created a technique that allows you to determine if any records were selected by an OPNQRYF command. 3 presents a sample usage of the technique. In this example, I skip execution of the program and issue a meaningful message to an external message queue when no records are selected.
In various situations, it is important to know if at least one record was selected after running the Open Query File (OPNQRYF) command. If no records were selected, you would want to take an appropriate action. I have created a technique that allows you to determine if any records were selected by an OPNQRYF command. Figure 3 presents a sample usage of the technique. In this example, I skip execution of the program and issue a meaningful message to an external message queue when no records are selected.
- Ira Shapiro
Did OPNQRYF Select any Records?
Figure 3 Determining If OPNQRYF Selected Any Records
PGM DCL VAR(&QRYSLT) TYPE(*CHAR) LEN(128) DCL VAR(&NBRCURRCD) TYPE(*DEC) LEN(10) CHGVAR VAR(&QRYSLT) VALUE('LSSTE *EQ "PA"') OVRDBF FILE(LIST) SHARE(*YES) OPNQRYF FILE((LIST LIST)) QRYSLT(&QRYSLT) + KEYFLD((LSSUB) (LSTITL)) CRTPF FILE(QTEMP/TEMPFILE) RCDLEN(1) MONMSG MSGID(CPF7302) CPYFRMQRYF FROMOPNID(LIST) TOFILE(QTEMP/TEMPFILE) + MBROPT(*REPLACE) NBRRCDS(1) FMTOPT(*NOCHK) posdbf list *start RTVMBRD FILE(TEMPFILE) NBRCURRCD(&NBRCURRCD) IF COND(&NBRCURRCD > 0) THEN(DO) SNDPGMMSG MSG('Records exist in file.') TOPGMQ(*EXT) ENDDO ELSE CMD(DO) SNDPGMMSG MSG('No records were selected from file by + QRYSLT(' *BCAT &QRYSLT *BCAT ')') + TOPGMQ(*EXT) ENDDO CLOF OPNID(LIST) DLTOVR FILE(LIST) ENDPGM
Business users want new applications now. Market and regulatory pressures require faster application updates and delivery into production. Your IBM i developers may be approaching retirement, and you see no sure way to fill their positions with experienced developers. In addition, you may be caught between maintaining your existing applications and the uncertainty of moving to something new.
IT managers hoping to find new IBM i talent are discovering that the pool of experienced RPG programmers and operators or administrators with intimate knowledge of the operating system and the applications that run on it is small. This begs the question: How will you manage the platform that supports such a big part of your business? This guide offers strategies and software suggestions to help you plan IT staffing and resources and smooth the transition after your AS/400 talent retires. Read on to learn:
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