Re: IWS and input parameters...

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" <[email protected]>
To:     "Web Enabling the IBM i (AS/400 and iSeries)" 
<[email protected]>
Date:   16/12/2020 06:44 AM
Subject:        Re: [WEB400] IWS and input parameters...
Sent by:        "WEB400" <[email protected]>



@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 <[email protected]>
> 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 
of
> 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 
or
> > could share some useful information?
> >
> > Thanks,
> >
> > Rob
> >
> > On Mon, Dec 14, 2020 at 10:37 PM Nadir Amra <amra-r/[email protected]> 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" <[email protected]> wrote on 12/14/2020
> 05:52:33
> >> PM:
> >>
> >>> From: Robert Rogerson <[email protected]>
> >>> To: "Web Enabling the IBM i (AS/400 and iSeries)"
> >> <[email protected]>
> >>> Date: 12/14/2020 05:52 PM
> >>> Subject: [EXTERNAL] Re: [WEB400] IWS and input parameters...
> >>> Sent by: "WEB400" <[email protected]>
> >>>
> >>> @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-r/[email protected]> 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" <[email protected]> wrote on 12/14/2020
> >> 08:24:21
> >>>> AM:
> >>>>
> >>>>> From: Robert Rogerson <[email protected]>
> >>>>> To: "Web Enabling the IBM i (AS/400 and iSeries)"
> >>>> <[email protected]>
> >>>>> Date: 12/14/2020 08:24 AM
> >>>>> Subject: [EXTERNAL] [WEB400] IWS and input parameters...
> >>>>> Sent by: "WEB400" <[email protected]>
> >>>>>
> >>>>> 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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