Re: V5R2: Source now allowed in the IFS

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Tom,

Your method of running CRTPF as needed, does it handle stuff like
- Maximum number of records
- Triggers on the file
- RI defined for the file
- Maximum number of members
...
(hate to duck and run, but I have to leave for a week to put my father to
his final rest)

Rob Berendt
--
"They that can give up essential liberty to obtain a little temporary
safety deserve neither liberty nor safety."
Benjamin Franklin




qsrvbas@netscape.net (Tom Liotta)
Sent by: midrange-l-admin@midrange.com
10/21/2002 09:42 PM
Please respond to midrange-l

        To:     midrange-l@midrange.com
        cc:
        Fax to:
        Subject:        Re: V5R2:  Source now allowed in the IFS


James:

--inline

midrange-l-request@midrange.com wrote:

>   9. Re: V5R2:  Source now allowed in the IFS (James Rich)
>
>Ah, but what about compiled languages?  This is probably what you are
>talking about.  It is common to compile things like this:
>
>cc -o program program.c
>
>This indicates that the source file program.c should be compiled to
>produce the executable program.  The name of the resulting compiled code
>is specified in the compile command.  But wait!  The AS/400 does the same
>thing:
>
>CRTBNDRPG PGM(MYLIB/TESTPGM) SRCFILE(MYLIB/QRPGLESRC) SRCMBR(TESTPGMSRC)
>
>The command defaults to give the resulting compiled code the same name as
>the source, but it certainly doesn't have to be this way - it is just a
>naming convention.

But that isn't the major point for me. A "make" utility isn't a real
difficult tool to... ummm... 'make' on the iSeries. I've built a few. But
where the iSeries goes beyond that is in letting me look at a compiled
object and know what it was compiled from.

I'm currently running tests on a project I've been working on. One
component cannot be fully tested until some integration work is done with
another project. I've created a temporary program that returns dummy info
so my components will run until the other work is done. That is, one of my
programs is calling PGM_ABC though the real PGM_ABC hasn't been written
yet. This isn't uncommon.

But anyone can look at my current PGM_ABC *PGM object and know it's a
fake. They can tell it wasn't compiled from production source because the
full name of the source is included along with date/time information from
the source member. ("Hey, this was compiled from James' library! What's it
doing in Accounts Payable?")

You seem to be saying that a make utility somehow provides a backwards
link from the compiled object to all the various sources. What if someone
deletes the input to make (makefile)? or modifies it? Is there something
else that tells you how to recreate it? I have no expertise under Unix, so
those are serious questions.


>"Crude utilities like "make" rely on the file date/time stamps, using the
>file system as a primitive database, to determine what changed, and
hence,
>what objects need to be recreated from "corresponding" (by name only)
>source files."
>
>Well, every filesystem on earth is a primitive database, so nothing new
>there.  But look what make does: it "determine(s) what changed, and
hence,
>what objects need to be recreated" - brilliant!  That's just what it is
>supposed to do.  The relationships required to understand how something
is
>built are defined in a file (justly called Makefile).  I don't see how
>this is crude.  It seems rather advanced to me.  I would love it if the
>iSeries would notice that I've changed the source to a file and issue the
>appropriate CRTPF command for me when I run CRTBNDRPG.

The tools I use _will_ issue CRTPFs as needed, pretty much just as you
described. And they require no script (makefile or whatever) to guide
them. All they need is the object that's being recreated. That is, there
is no precisely similar need for a makefile on the iSeries because the
various object references all are part of the object, and each referenced
object has references to the appropriate source, including the useful
change date/time.

Note that files similar to a makefile _ARE_ extremely useful however,
particularly to create the application in the first place or for
recreation under numerous circumstances.


>(and be cautious about calling people weenies - perhaps someday "all your
>servers are belong to us"  BUWAHAHAHA!! :^) )

Sure... now if you'll please "make us up the bomb", we'll be on our way.

:-)

Tom

--
Tom Liotta
The PowerTech Group, Inc.
19426 68th Avenue South
Kent, WA 98032
Phone  253-872-7788 x313
Fax    253-872-7904
http://www.powertechgroup.com


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