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  1.  Home
  2. WEB400
  3. March 2018

Re: dataformatting in nodeJS SQL interface with IBM db2a

Well, I wrote my own trimmer (faster than a RFE) ....

Typical (IBM db2a) SQL result returned in Javascript Object
[
{
"WCWUSC": "QSECOFR",
"WCHEAD": "Security Officer ",
"WCRCST": "123456",
"WCRCDC": "N",
"WCRCUD": "1",
"WCCDTE": "32418"
},
{
"WCWUSC": "QUSER",
"WCHEAD": " Base User \" '' ",
"WCRCST": "A",
"WCRCDC": "D",
"WCRCUD": "",
"WCCDTE": "22254"
}
]

Result after .trimDataset(sqlResult)
[
{
"WCWUSC": "QSECOFR",
"WCHEAD": "Security Officer",
"WCRCST": "123456",
"WCRCDC": "N",
"WCRCUD": 1,
"WCCDTE": 32418
},
{
"WCWUSC": "QUSER",
"WCHEAD": " Base User\" ''",
"WCRCST": "A",
"WCRCDC": "D",
"WCRCUD": 0,
"WCCDTE": 22254
}
]

Result after .mapToSchema(sqlResult)
[
{
"userId": "QSECOFR",
"description": "Security Officer",
"http": "powerext.com",
"recordDeleteCode": false,
"recordUpdateCounter": 1,
"creationDate": "2018-03-24"
},
{
"userId": "QUSER",
"description": " Base User\" ''",
"http": "powerext.com",
"recordDeleteCode": true,
"recordUpdateCounter": 0,
"creationDate": "1954-02-22"
}
]


On Mon, Mar 26, 2018 at 3:43 PM, Justin Taylor <JUSTIN@xxxxxxxxxxxxx> wrote:

" I believe that it is problably a common problem"

Sounds like more reason for an RFE IMO.



-----Original Message-----
From: Henrik Rützou [mailto:hr@xxxxxxxxxxxx]
Sent: Saturday, March 24, 2018 12:47 PM
To: Web Enabling the IBM i (AS/400 and iSeries) <web400@xxxxxxxxxxxx>
Subject: Re: [WEB400] dataformatting in nodeJS SQL interface with IBM db2a

Niels,

or as always "do it yourself" ;-)

Well I could raise a RFE but I believe that it is problably a common
problem at least with non-trimmed fields so I have written this little 26
line function that iterates throug an object and clean up most.

I can foresee that the next question is "what about booleans?"

I also seems to remember that there are some column metadata send by db2a
we just don't see them in the result set.

Maybee someone knows or has a link, it was in some example as far as I
remember.


On Sat, Mar 24, 2018 at 6:36 PM, Nathan Andelin <nandelin@xxxxxxxxx>
wrote:

Niels,

Could you clarify? Are you suggesting that somebody submit an RFE to
have IBM add new SQL connection settings that implement the desired
"trim"
behaviors?

Nathan.


On Sat, Mar 24, 2018 at 9:08 AM, Niels Liisberg
<nli@xxxxxxxxxxxxxxxxx>
wrote:

At better solution would be: set the trim option on the connection
since that is already IBM proprietary . Doing it on the select
statement would pollute the sql syntax.

Why don't you raise a RFE for both trimming and sql-alike data types
in
the
result-set. I think my friend Jesse Gorzinsky would love that.
lør. 24. mar. 2018 kl. 15.52 skrev Henrik Rützou <hr@xxxxxxxxxxxx>:

Nathan

a lazy programmer (and I'm one) is a programmer that dosn't code
100 similar programs from one end to the other - they have fun
making a program generator that then does the job they do not
bother to make ;-)

On Sat, Mar 24, 2018 at 3:10 PM, Nathan Andelin
<nandelin@xxxxxxxxx>
wrote:

Henrik,

The term "lazy programmer" is sometimes used with negative
connotation,
and
other times used with positive connotation. In this case, I
don't
fault
programmers who would rather not code the full SQL statement,
including
rtrim() function calls required to trim fields.

I was just trying to say that this is a case where invoking a
REST
web
service API would provide a simpler interface for programmers. A
web-service API would relieve programmers of the verbosity and
ofttimes
complexity of coding their own SQL statements.

I'm just suggesting that this is a case where a REST web service
API
would
have advantages over Node's db2a interface.



On Sat, Mar 24, 2018 at 7:41 AM, Henrik Rützou <hr@xxxxxxxxxxxx>
wrote:

Nathan

you may call it lazy to want to have a transparent interface
that
hasn't
to
be
touched every time you add a new or remove a column to a table.

Especially removing a column will cause errors if you specify
resultsets
by specific field names, imho they sould automatically be
removed
from
the rest service and that should automatically result in the
field
are
removed
in the UI regardless of code defining the field may exsist.

We are back to constructing an UI where if you filter the SSN
from
UserA
it dosn't appear in his UI but dons't filter it from UserB it
appears -
both running
on the same code.


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--
Regards,
Henrik Rützou

http://powerEXT.org <http://powerext.org/>
--
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--
Best regards

Niels Liisberg
Chief Software Architect
System & Method A/S
Phone +45 70 20 30 10
Mobile + 45 31 15 88 61
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moment to review the archives at
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--
Regards,
Henrik Rützou

http://powerEXT.org <http://powerext.org/>

--
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