In our old insurance math system, based on ASSEMBLER, we had lots of
read only tables, which were implemented as load modules like this. The
modules
that used this modules, LOADed them and looked up the information in the
modules
based on the address in register 0 returned by LOAD.
When implementing the new math system in C, we took a slightly modified
approch:
the table modules now had large static const array with init values, and
they contained
a small function, which did a binary search on this tables, so the
function delivered the
needed values based on keys passed as parameters. The modules now are
"normal"
C functions. But from a functional point of view, it is almost the same.
In a sense, the old approach was smarter, because the binary search had
to be coded
only once ... with the new approach, every table module contains the
binary search logic ...
but that does no great harm, because the table modules are generated,
and the code
is not very large.
Kind regards
Bernd
Am 20.03.2015 um 13:16 schrieb Scott Ford:
Elardus,
Ty my friend, I worked in manufacturing for awhile we had an external table
like this we loaded into CICS. Those were the days of macro CICS.
Thanks my friend.
Regards,
Scott
On Friday, March 20, 2015, Elardus Engelbrecht <
[email protected]> wrote:
Elardus Engelbrecht wrote:
I have the same thing which Charles Mills kindly described. Load a mod
with data and play with it.
In my case, I inherited an ancient IEFUJI exit. That thing loads a module
residing in a linklist library which contains only a list of approved
accounting codes allowed to be used.
As promised here is it (As you can see it was ancient stuff... ;-D ):
This load a mod and use R4 as a base to loop the table.
A00UJI EQU *
LOAD EP=SSPACTCD
LR R4,R0 SAVE EP ADDR
A00LOOP EQU *
CLC 0(5,R4),PROJECT IS THERE A MATCH ?
BE A00SPEC YES
CLC 0(5,R4),=C'FFFFF' END OF TABLE
BE A00INV2 NO
LA R4,8(,R4) SCAN THROUGH TABLE
B A00LOOP NEXT ENTRY
....
A00INV2 EQU *
WTO 'IEFUJI04 NOT REGISTERED CONTACT SYSTEMS'
...
BAL R10,A00DELEP
LA R15,4 4 CANCEL JOB PROCESSING
B A00EXIT
A00SPEC EQU *
BAL R10,A00DELEP 0
LA R15,0 CONTINIUE
B A00EXIT
A00DELEP EQU *
DELETE EP=SSPACTCD
BR R10
...
PROJECT DS CL5
Table linked in Linklib as RENT.
SSPACTCD CSECT
DS 0F
DC CL8'ABCDE'
...
DC CL8'FFFFF' END
END
Groete / Greetings
Elardus Engelbrecht
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