Some commands such as Create Duplicate Object (CRTDUPOBJ) require a library name, but hard-coding a library name in a CL program is not a good practice. A better method is to use the RTNLIB parameter of the RTVOBJD command to retrieve the library name. For example, suppose you want to create a duplicate object of a file called WKFILE into QTEMP, then call an RPG program. You could use the program shown in 1.
Some commands such as Create Duplicate Object (CRTDUPOBJ) require a library name, but hard-coding a library name in a CL program is not a good practice. A better method is to use the RTNLIB parameter of the RTVOBJD command to retrieve the library name. For example, suppose you want to create a duplicate object of a file called WKFILE into QTEMP, then call an RPG program. You could use the program shown in Figure 1.
This program could be run in a test library. Then the program and file could be moved to a production library without any changes. The library where the file exists could even be renamed without affecting the program.
TechTalk: Hard-coded Library Names are Bad News
Figure 1 Using RTVOBJD and RTNLIB
Figure 1: Using RTVOBJD and RTNLIB PGM DCL VAR(&LIB) TYPE(*CHAR) LEN(10) RTVOBJD OBJ(WKFILE) OBJTYPE(*FILE) RTNLIB(&LIB) CRTDUPOBJ OBJ(WKFILE) FROMLIB(&LIB) OBJTYPE(*FILE) + TOLIB(QTEMP) OVRDBF FILE(WKFILE) TOFILE(QTEMP/WKFILE) CALL PGM(RPG001) 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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