Re: Validating JSON Data in a Host Variable

Hi Nathan,

SQL is declarative, so you tell it what result you want, but not how to get
there.

So, it sounds like the SQL engine is implementing that particular VALUES
request as a SELECT statement in the plumbing.

Another example is using recursive SQL. I've seen those implemented as
using a CURSOR in the plumbing, even though my set based SQL statement was
not using a CURSOR. If you think about it, it would be difficult or
impossible to implement recursive SQL in the plumbing without using
something like a CURSOR.

Mike

On Fri, Feb 2, 2018 at 1:52 PM, Nathan Andelin <nandelin@xxxxxxxxx> wrote:

Jon,

After running the following:

Values(XMLPARSE(Document '<root><Name>xxx</Name><Company
Name="ABC"/></root>'))

The following message is returned:

"SELECT statement run complete."

What makes it a "SELECT statement"?

Kind of contorted, from my perspective.



On Fri, Feb 2, 2018 at 9:39 AM, Jon Paris <jon.paris@xxxxxxxxxxxxxx>
wrote:

Thanks Birgitta - easier than I thought but why oh why do they have to
have different syntax for every new feature. So frustrating.


Jon Paris

www.partner400.com
www.SystemiDeveloper.com

On Feb 2, 2018, at 1:16 AM, Birgitta Hauser <Hauser@xxxxxxxxxxxxxxx>

wrote:

Hi Jon

Is there a similar XML valuation check?

XMLPARSE will convert a "wellformed" XML Document into an internal
representation.
If the document is not wellformed, an error occurs (SQLCODE -20398 /
SQLSTATE 2200M.

Values(XMLPARSE(Document '<root><Name>xxx</Name><Company
Name="ABC"/></root>'));

Mit freundlichen Grüßen / Best regards

Birgitta Hauser

"Shoot for the moon, even if you miss, you'll land among the stars."

(Les

Brown)
"If you think education is expensive, try ignorance." (Derek Bok)
"What is worse than training your staff and losing them? Not training

them

and keeping them!"
„Train people well enough so they can leave, treat them well enough so

they

don't want to.“ (Richard Branson)


-----Original Message-----
From: RPG400-L [mailto:rpg400-l-bounces@xxxxxxxxxxxx] On Behalf Of Jon

Paris

Sent: Donnerstag, 1. Februar 2018 18:58
To: Rpg400 Rpg400-L <rpg400-l@xxxxxxxxxxxx>
Subject: Re: Validating JSON Data in a Host Variable

Is there a similar XML valuation check? Only thing I can find is the

schema

validation option - <sacrasm> and of course _all_ XML documents

_always_

have schema available! </sacrasm>


Jon Paris

www.partner400.com
www.SystemiDeveloper.com

On Feb 1, 2018, at 12:37 PM, Buck Calabro <kc2hiz@xxxxxxxxx> wrote:

On 2/1/2018 3:51 AM, Craig Richards wrote:

But if you just have the document in a Host Variable, is there an
easy way to validate it?

dcl-s testVar char(1024);
dcl-s isJSON char(1);

isJSON = '*'; // eyecatcher
testVar =
'{-
"message": "Hello!",-
"destination": "world"-
}';


exec sql
with test_json (json_string) as
( values(:testVar) )
select
case
when json_string is json object
then 'Y'
else 'N'
end as valid_json
into :isJSON
from test_json
;

dsply sqlstate;
dsply isJSON;

*inlr = *on;

--
--buck

http://wiki.midrange.com
Your updates make it better!

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