Re: ibm_db node module and IBM Data Server Driver

doesn't support the retrieval of meta-data from the stored procedure

4. So, could a person do something like this?
a. A .NET Core web app uses Node Services to access the ibm_db node

module.

Maybe I'm misunderstanding this, but it seems you want to have a .NET
application use a NodeJs wrapper to call an ODBC driver (via ibm-db) to
access the IBM i? In which case why not just have the .NET application use
the Client Access ODBC driver directly, surely this must be possible? Why
involve NodeJs/ibm_db at all?

c. This connection is then used for SQL against database tables

and/or for calling CL and COBOL programs using stored procedures.

Personally I wouldn't allow SQL against the database, only stored
procedure calls. One thing with the ibm_db driver, that I mentioned before
I think, it that is doesn't support the retrieval of meta-data from the
stored procedure result sets. This may or may not be an issue for you but
for my framework this is a showstopper at the moment which is one of the
reasons why I haven't ported of from Java to Node. If you cannot get the
meta-data it makes it impossible to know what data-type each column is and
therefore you can't use this information to transform or format the data
correctly in a generic way.


________________________________
From: WEB400 <web400-bounces@xxxxxxxxxxxx> on behalf of Kelly Cookson
<KCookson@xxxxxxxxxxxx>
Sent: 08 April 2018 20:34
To: Web Enabling the IBM i (AS/400 and iSeries) (web400@xxxxxxxxxxxx)
Subject: [WEB400] ibm_db node module and IBM Data Server Driver

Hi,

I would like to pick people's thoughts on an idea.


1. I just came across the ibm_db node module at npm:
https://eur03.safelinks.protection.outlook.com/?url=
https%3A%2F%2Fwww.npmjs.com%2Fpackage%2Fibm_db&data=02%7C01%7C%
7Cf076ec661d0344b9d06b08d59d7f77ee%7C84df9e7fe9f640afb435aaaaaaaa
aaaa%7C1%7C0%7C636588093146178905&sdata=EF3xiaMapYby74ikImGZmnXtPV2ha4
gjabos4MHpa8c%3D&reserved=0. It looks to me like this will run in node on
windows.


2. It also looks like the ibm_db node module can access DB2 on the IBM
i, thanks to the IBM Data Server Driver for ODBC and CLI. (
https://eur03.safelinks.protection.outlook.com/?url=
https%3A%2F%2Fwww.ibm.com%2Fdeveloperworks%2Fcommunity%
2Fblogs%2Fpd%2Fentry%2Fusing_ibm_db2_from_node_js4%3Flang%
3Des&data=02%7C01%7C%7Cf076ec661d0344b9d06b08d59d7f77ee%
7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636588093146178905&sdata=
QFxpaERPQoWvjJuRNWg8k8DubO%2FgosJFygsBcVv9te0%3D&reserved=0)


3. The .NET Core framework has something called Node Services. Node
Services allows .NET apps to use node modules (using node on windows under
the covers).



4. So, could a person do something like this?

a. A .NET Core web app uses Node Services to access the ibm_db node
module.

b. The ibm_db node module uses the IBM Data Server for ODBC and CLI to
connect to a DB2 database on the IBM i.

c. This connection is then used for SQL against database tables
and/or for calling CL and COBOL programs using stored procedures.

I'm not suggesting this is our preferred option. It's not even on the
table for consideration yet. I would like to get some expert insights first
(of which this list is full, and truly appreciated). Where does the above
fall down or bite us?

Thanks,

Kelly Cookson
IT Project Leader
Dot Foods, Inc.
217-773-4486 ext. 12676
https://eur03.safelinks.protection.outlook.com/?url=
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