Hi all,
Been doing a fair amount of RPGUI coding lately (
http://mowyourlawn.com/rpgui.html) and have been writing many misc RPG sub
procs to help with moving data around. One that has bothered me for awhile
now is converting an entire record to a JSON string and back again. For
example, I am writing an app right now that displays "person" information to
the browser from the PERSONTBL DB2 table and my code looks like this:
chain key PERSONTBL PER;
json_putInt( pJson: 'C@PER#': PER.C@PER#);
json_putInt( pJson: 'C@FAM#': PER.C@FAM#);
json_putInt( pJson: 'C@MPER': PER.C@MPER);
json_putInt( pJson: 'C@SEQ#': PER.C@SEQ#);
json_putString(pJson: 'C@RSHP': PER.C@RSHP);
json_putString(pJson: 'C@SSN': %editc(PER.C@SSN:'X'));
json_putString(pJson: 'C@NAML': PER.C@NAML);
json_putString(pJson: 'C@NAMF': PER.C@NAMF);
json_putString(pJson: 'C@NAMM': PER.C@NAMM);
json_putString(pJson: 'C@NSUF': PER.C@NSUF);
json_putString(pJson: 'C@NAME': PER.C@NAME);
json_putString(pJson: 'C@NAMD': PER.C@NAMD);
json_putString(pJson: 'C@AD1#': PER.C@AD1#);
json_putString(pJson: 'C@AD1N': PER.C@AD1N);
json_putString(pJson: 'C@CITY': PER.C@CITY);
json_putString(pJson: 'C@STA': PER.C@STA);
json_putString(pJson: 'C@ZIP': PER.C@ZIP);
json_putString(pJson: 'C@MADC': PER.C@MADC);
json_putString(pJson: 'C@MAD1': PER.C@MAD1);
json_putString(pJson: 'C@MAD2': PER.C@MAD2);
json_putString(pJson: 'C@MCTY': PER.C@MCTY);
json_putString(pJson: 'C@MAST': PER.C@MAST);
json_putString(pJson: 'C@MZIP': PER.C@MZIP);
json_putString(pJson: 'C@PPH#': PER.C@PPH#);
json_putString(pJson: 'C@PPFL': PER.C@PPFL);
json_putString(pJson: 'C@SPH#': PER.C@SPH#);
json_putString(pJson: 'C@SPFL': PER.C@SPFL);
json_putString(pJson: 'C@TPH#': PER.C@TPH#);
json_putString(pJson: 'C@TPFL': PER.C@TPFL);
json_putString(pJson: 'C@EMAD': PER.C@EMAD);
json_putString(pJson: 'C@FSPH': %char(PER.C@FSPH));
json_putString(pJson: 'C@DOB': %char(PER.C@DOB));
json_putString(pJson: 'C@AGE': %char(PER.C@AGE));
json_putString(pJson: 'C@SEX': PER.C@SEX);
json_putString(pJson: 'C@MSTA': %trim(PER.C@MSTA));
json_putString(pJson: 'C@CTZS': %trim(PER.C@CTZS));
json_putString(pJson: 'C@LANG': PER.C@LANG);
json_putString(pJson: 'C@ITPR': PER.C@ITPR);
json_putString(pJson: 'C@ETHN': PER.C@ETHN);
json_putString(pJson: 'C@STAT': PER.C@STAT);
json_putString(pJson: 'C@BYCK': PER.C@BYCK);
json_putString(pJson: 'C@APPD': %char(PER.C@APPD));
json_putString(pJson: 'C@CUSR': PER.C@CUSR);
json_putString(pJson: 'C@CDAT': %char(PER.C@CDAT));
... and instead of the above I want to do something like this...
chain key PERSONTBL PER;
jsonObj = json_cvtRec(PER: 'PERSONTBL');
Then as long as PERSONTBL is externally defined we could get the layouts of
each field. In theory we should be able to use an incrementing pointer to
"parse" the passed in DS based on the meta data found by calling an API and
passing in the externally define table definition.
I have done this before at a previous employer in a slightly different web
scenario, but unfortunately I don't have access to that code anymore.
Anybody else have a start on a code base that would do something similar to
what I describe above?
Aaron Bartell
http://mowyourlawn.com
http://mowyourlawn.com/blog/
midrange.com
