Re: IWS and input parameters... -- WEB400

We use IWS for some system to system notifications.

Rather than creating a new service for every different requirement we
simply pass a data structure and the processing RPG program determines the
request type and calls the required procedure.

This allows new requirements to be added with no change to the IWS
definition and works very well.

Cheers

From: "Robert Rogerson" <rogersonra@xxxxxxxxx>
To: "Web Enabling the IBM i (AS/400 and iSeries)"
<web400@xxxxxxxxxxxxxxxxxx>
Date: 16/12/2020 06:44 AM
Subject: Re: [WEB400] IWS and input parameters...
Sent by: "WEB400" <web400-bounces@xxxxxxxxxxxxxxxxxx>

@Jon, so you are suggesting the pFilterDs input parm(s) be passed as a
character string and then parse them in the RPG. That way I could still
use a GET.
That may work...

@Nadir, thanks for the links. I reread them and I think I have a better
understanding. One question, which I know I'm going to be asked is, why
are you using a POST to retrieve data? I now understand I can do this.
But is the reason that there is a restriction in IWS (as there is more
than
one parameter that is a structure) or is this a restriction of all web
service servers?

Thanks,

Rob

On Tue, Dec 15, 2020 at 11:09 AM Jon Paris <
https://urldefense.proofpoint.com/v2/url?u=http-3A__jon.paris-40partner400.com&d=DwICAg&c=euGZstcaTDllvimEN8b7jXrwqOf-v5A_CdpgnVfiiMM&r=Kys-lxRCMpPr7up01Pp1FRjOe49ne6imWwi1b-ue8yQ&m=niBeXv162AFFRLA__8V3kbpOQvbzDlhUTlGl6Ez-pbY&s=REkUDLJJFdQNGPX_i1CJifIdX7R4t63_LSyAqHcYJOg&e=

wrote:

I don't have time to play but, if you want to stick with GET, can you

not

add an extra simple input parm to deal with this?

Jon

On Dec 14, 2020, at 11:20 PM, Robert Rogerson <rogersonra@xxxxxxxxx>

wrote:

I'm new to this so I'm trying to understand.
If I want to return rows, normally I would use a GET. But since one

my

input parameters is a structure I'm forced to either use a POST or a

PUT.

So I'm sort of forced out of the convention that GET is to read

records,

POST is to create records and PUT is to update records.
So it's ok to do a POST only to read records?

Is there anyone else using IWS from an RPG perspective that has found

could share some useful information?

Thanks,

Rob

On Mon, Dec 14, 2020 at 10:37 PM Nadir Amra <amra@xxxxxxxxxx> wrote:

the suffix _LENGTH must be capital because that is what IWS

currently

looks for. It should not matter because it is not part of payload.

If you have a structure that is an input parameters, then the HTTP

method

is POST or PUT.

Other than what we have for doc on web site, and articles,

that

is

all the doc there is. We are in process of updating the doc.

"WEB400" <web400-bounces@xxxxxxxxxxxxxxxxxx> wrote on 12/14/2020

05:52:33

PM:

From: Robert Rogerson <rogersonra@xxxxxxxxx>
To: "Web Enabling the IBM i (AS/400 and iSeries)"

<web400@xxxxxxxxxxxxxxxxxx>

Date: 12/14/2020 05:52 PM
Subject: [EXTERNAL] Re: [WEB400] IWS and input parameters...
Sent by: "WEB400" <web400-bounces@xxxxxxxxxxxxxxxxxx>

@Nadir, your assumption is correct, pFilterDs is indeed input. So

you

are

saying that I can have a data structure as input?

Why must the "_lenght" be in upper case. I've never seen nor

understand

this requirement.

Thanks,

Rob

On Mon, Dec 14, 2020 at 3:25 PM Nadir Amra <amra@xxxxxxxxxx> wrote:

Which parameters are input and which output?

And "_length" suffix should be "_LENGTH"

Assuming pFilterDs is input, you may want to define a length

field

for it as well so that you know how many entries are being

passed

in.

"WEB400" <web400-bounces@xxxxxxxxxxxxxxxxxx> wrote on 12/14/2020

08:24:21

AM:

From: Robert Rogerson <rogersonra@xxxxxxxxx>
To: "Web Enabling the IBM i (AS/400 and iSeries)"

<web400@xxxxxxxxxxxxxxxxxx>

Date: 12/14/2020 08:24 AM
Subject: [EXTERNAL] [WEB400] IWS and input parameters...
Sent by: "WEB400" <web400-bounces@xxxxxxxxxxxxxxxxxx>

I want to have a filter(s) for my api.
An individual filter is defined as

dcl-ds filterTmp template qualified;
type char(20);
value char(20);
end-ds;

But there may be multiple occurrences of filter. For example,

'Warehouse': '95,96,97'
'Type':'Shipments'
'DateRange': 'LastWeek'

I was hoping to do something like
dcl-pi *n;
pFilterDs likeds(filterTmp) dim(10) const;
transactionDs_length int(10);
transactionsDs likeds(transactionsTmp) dim(1000);
httpStatus like(httpStatusTmp);
httpHeaders like(httpHeadersTmp) dim(10);
end-pi;

But when I try this on Step 5 of 9 on the Deploy New Service

Wizard

I

get

error
*Error:* ZUI_54411: The HTTP method must be PUT or POST when there

is an

input parameter that is not being injected with a value.

How should I be doing this?

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