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  1.  Home
  2. RPG400-L
  3. May 2018

RE: FW: json_table httpgetclob and header data

I did try that, and what I got was no errors and no data.

'<httpHeader>
<header name="Content-Type"
value="application/json" />
<header name="X-Auth-Token"
value="api-key 5xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx" />
<header name="X-Domain"
value="email.ourdomain.com" />
</httpHeader>'

(NB: If I did not include the '<httpHeader></httpHeader>' in my request I was given a 'XML must be well-formed' error message.

I rummaged through the web and found samples of headers in json posts/gets where the headers are just text: key : value pairs, 1 on each line.


-----Original Message-----
From: RPG400-L [mailto:rpg400-l-bounces@xxxxxxxxxxxx] On Behalf Of Kevin Bucknum
Sent: Thursday, May 17, 2018 4:26 PM
To: RPG programming on the IBM i (AS/400 and iSeries) <rpg400-l@xxxxxxxxxxxx>
Subject: RE: FW: json_table httpgetclob and header data

I haven't played with the http functions much, but my understanding is the headers have to be in xml. I think what you want is '<header name="context-type" value="application/json"></header>




Kevin Bucknum
Senior Programmer Analyst
MEDDATA/MEDTRON
Tel: 985-893-2550

-----Original Message-----
From: RPG400-L [mailto:rpg400-l-bounces@xxxxxxxxxxxx] On Behalf Of
Therrien, Paul
Sent: Thursday, May 17, 2018 3:15 PM
To: RPG programming on the IBM i (AS/400 and iSeries)
Subject: RE: FW: json_table httpgetclob and header data

Jose,
I was able to run your example and it worked fine....
I think the issue I am having is with the header data. I need to load
up
header data into my request to GetResponse.
When I attempt to execute your example with some dummy header data:

select * from JSON_TABLE(systools.httpGetClob( 'https://min-
api.cryptocompare.com/data/price?fsym=BTC&tsyms=EUR', 'Content-Type:
application/json' ), '$'
columns(price_char varchar(10) path '$.*',
price_dec dec(10, 2) path '$.*',
price_json varchar(25) format JSON path '$')) as x
;

I get the same "Content is not allowed in prolog." Error.

-----Original Message-----
From: RPG400-L [mailto:rpg400-l-bounces@xxxxxxxxxxxx] On Behalf Of
Jose
Perez
Sent: Thursday, May 17, 2018 3:14 PM
To: RPG programming on the IBM i (AS/400 and iSeries) <rpg400-
l@xxxxxxxxxxxx>
Subject: Re: FW: json_table httpgetclob and header data

Something must be wrong in the way you are building your GET request,
I
tried this from ACS and is working fine.
Note: I ran with and without Read Committed and it worked fine.

SET TRANSACTION ISOLATION LEVEL READ COMMITTED; select * from
JSON_TABLE(systools.httpGetClob( 'https://min-
api.cryptocompare.com/data/price?fsym=BTC&tsyms=EUR', null),

'$'
columns(price_char varchar(10) path '$.*',
price_dec dec(10, 2) path '$.*',
price_json varchar(25) format JSON path '$')) as x

On Thu, May 17, 2018 at 3:00 PM Jose Perez
<joseenocperez.jp@xxxxxxxxx>
wrote:

Paul in ACS try running this command before running your sql
statement
SET TRANSACTION ISOLATION LEVEL READ COMMITTED, try with a null or
blank header and make sure the token is correct.

On Thu, May 17, 2018 at 12:28 PM Therrien, Paul
<ptherrien@xxxxxxxxxxx>
wrote:

Cross posting from Midrange list .. .

We are on IBM I V7R2. I am using ACS SQLScripts v. 1.1.7.2

I am attempting to use httpgetclob and json_table to go to a
vendor's
(GetResponse), rest API.
I have tested the API in RPG usinig SK's LIBHTTP and it works like
a
charm.
However, when attempting it via an ACS SQL session using
HTTPGETCLOB
it is failing.

Here is the statement:

select * from JSON_TABLE(
SYSTOOLS.HTTPGETCLOB('


https://api3.getresponse360.com/v3/contacts?query[email]=@worldnet.att.
net'

,'Content-Type: application/json
X-Auth-Token: api-key 5xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx3
X-Domain: email.ourdomain.com'
),'$'
Columns(contactid varchar(4) PATH 'lax $.contactid',
email varchar(100) PATH 'lax $.email',
changedOn varchar(20) PATH 'lax $.changedOn',
createdOn varchar(20) PATH 'lax $.createdOn')
) as t ;

I am getting this error:
SQL State: 38000
Vendor Code: -4302
Message: [SQL4302] Java stored procedure or user-defined function
SYSTOOLS.HTTPGETCLOB, specific name HTTPG00005 aborted with an
exception "Content is not allowed in prolog."

I am thinking that header statements:
'Content-Type: application/json
X-Auth-Token: api-key 5xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx3
X-Domain: email.ourdomain.com'
are somehow causing the error and this is possibly a formatting
issue.

1. Is there something obviously wrong with my statement?
2. Is there a debugging option I can turn on in the ACS SQL client
to
help me debug HTTPGETCLOB? I would love to determine the issue via
my own resources if possible.
3. Perhaps HTTPGetClob is not what I really want to do?

Any and all help appreciated.

Paul

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