RE: Embedded payload in a JSON - How to define and process

Thx Bradley. I'll start with that method.

-----Original Message-----
From: RPG400-L <rpg400-l-bounces@xxxxxxxxxxxxxxxxxx> On Behalf Of Brad Stone
Sent: Tuesday, April 13, 2021 11:44 AM
To: RPG programming on IBM i <rpg400-l@xxxxxxxxxxxxxxxxxx>
Subject: Re: Embedded payload in a JSON - How to define and process

I just did a project like this, although I used YAJL instead.

You need to process the embedded JSON into a variable, and then process that variable like you just read in "real" JSON. The parser should convert the slashes, etc like you said.

So, read JSON.
Find the element with embedded JSON with the parser.
Move that into the parser again.

Again, this is using YAJL but I'm guessing it's the same. I'd try making the DS's separate instead of sub-ds of the main DS.

To me, I think it's sort of silly to have JSON as data. Maybe there is a reason for it, but I don't see it when it could be a sub-object just as easily.



On Tue, Apr 13, 2021 at 10:20 AM Jack Prucha <Jack.Prucha@xxxxxxx> wrote:

We're on 7.3 and I have a working program processing JSON transactions.
I'm to start processing some new transactions and am not sure what
issues I might have. The program currently uses Data-Into and YAJLINTO.

The new transactions looks like this:


{"id":396,"payload":"{\"name\":{\"firstName\":\"JAMES\",\"lastName\":\
"SHUE\",\"id\":null,\"suffix\":null,\"middleName\":\"B\"},\"dob\":\"19
55-01-01\",\"someNumber\":\"123456789\",\"tin\":null,\"workPhone\":nul
l,\"homePhone\":null}","internalAccountNumber":12345,"as400AccountNum"
:12345678902,"eventType":"DELETE","source":"SUCCESSOR","status":"PENDI
NG","submitDate":"2021-04-08
15:37:03","createdDate":"2021-04-08
15:37:03","createdBy":"unknown","lastModifiedDate":"2021-04-08
15:37:03","lastModifiedBy":"unknown"}

My question is about the "payload" object which is a JSON inside of a JSON.


1. Should this be defined as just a nested array? Something like this:

dcl-ds txSuccessorJSONDoc qualified;
ID VarChar(20) inz('0');

Dcl-ds PAYLOAD;
FIRSTNAME varchar(14) inz('');
MIDDLENAME varchar(13) inz('');
LASTNAME varchar(20) inz('');
SUFFIX varchar(3) inz('');
DOB varchar(10) inz('');
SOMENUMBER varchar(9) inz('');
TIN varchar(9) inz('');
WORKPHONE varchar(10) inz('0');
HOMEPHONE varchar(10) inz('0');
End-Ds;

USERID VarChar(128) inz('0');
INTERNALACCOUNTNUMBER VarChar(9) inz('0');
AS400ACCOUNTNUM VarChar(12) inz('0');
EVENTTYPE varchar(10) inz('');
SOURCE varchar(50) inz('');
STATUS varchar(50) inz('');
SUBMITDATE varchar(25) inz('');
CREATEDDATE varchar(25) inz('');
CREATEDBY varchar(128) inz('');
LASTMODIFIEDDATE varchar(25) inz('');
LASTMODIFIEDBY varchar(128) inz('');
CREATEDDATE varchar(25) inz('');
End-ds;


1. I'm told the embedded slashes in the payload object should be
recognized and ignored by the JSON processor. Do I have to do
anything different for that portion of the JSON to process? I'm not
finding much on this with Google.

TIA
Jack


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