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  1.  Home
  2. RPG400-L
  3. July 2001

RE: Variable length variables and data queues

  • Subject: RE: Variable length variables and data queues
  • From: "Phil" <sublime78ska@xxxxxxxxx>
  • Date: Tue, 24 Jul 2001 20:30:52 -0400
  • Importance: Normal
 
Aaron,

maybe I should just write the XML
> string out to a stream file in the IFS and put the path to the file in the
> data queue and have the program monitoring the data queue go and
> get it from
> the IFS.

This is exactly what I do (except it's not an xml file.)

Phil

> -----Original Message-----
> From: owner-rpg400-l@midrange.com [mailto:owner-rpg400-l@midrange.com]On
> Behalf Of Bartell, Aaron L. (TC)
> Sent: Tuesday, July 24, 2001 7:17 PM
> To: 'RPG400-L@midrange.com'
> Subject: RE: Variable length variables and data queues
>
>
> How do I view the length of an existing data queue?
>
> Right now I have some code from someone else that looks like the
> following:
>  C       call      'QSNDDTAQ'
>  C       parm      'EMAILDTAQ'   DQ#NAM           10
>  C       parm      'TESTLIB'     DQ#LIB           10
>  C       parm      2000          DQ#LEN            5 0
>  C       parm                    DQDTA
>
> Does this code set the max length for this data queue entry or
> does it just
> say how long this particular string is that I am sending?  So
> could my next
> call to QSNDDTAQ pass 3000 into DQ#LEN because my varying variable became
> longer?
>
> I guess my other option would be to make it as big as possible.  Is there
> any performance considerations with this?  I would be wasting a
> lot of space
> for each data queue entry.
>
> Maybe I am going about this all the wrong way.  Instead of trying
> to fit my
> whole XML string into this data queue maybe I should just write the XML
> string out to a stream file in the IFS and put the path to the file in the
> data queue and have the program monitoring the data queue go and
> get it from
> the IFS.
>
> Thinking hard,
> Aaron Bartell
>
> -----Original Message-----
> From: Mackie, Roger L. (Precision Press) [mailto:RLMackie@ppress-tc.com]
> Sent: Tuesday, July 24, 2001 4:58 PM
> To: 'RPG400-L@midrange.com'
> Subject: RE: Variable length variables and data queues
>
>
> My understanding is that the CRTDTAQ MAXLEN parameter sets the
> entry length,
> not the number of bytes allocated for the queue. If MAXLEN = 100,
> each entry
> on the queue can be a maximum of 100 bytes.
>
> Roger
>
> -----Original Message-----
> From: Phil [mailto:sublime78ska@yahoo.com]
> Sent: Tuesday, July 24, 2001 4:23 PM
> To: RPG400-L@midrange.com
> Subject: RE: Variable length variables and data queues
>
>
> The size of the queue - is it the maximum per entry or the maximum of the
> sum of all entries on the queue?  To keep a queue from filling quickly, I
> have always made the maximum queue size large so I thought the latter was
> true.
>
> Phil
>
> > -----Original Message-----
> > From: owner-rpg400-l@midrange.com [mailto:owner-rpg400-l@midrange.com]On
> > Behalf Of Denis Robitaille
> > Sent: Tuesday, July 24, 2001 4:14 PM
> > To: RPG400-L@midrange.com
> > Subject: Re: Variable length variables and data queues
> >
> >
> > When you create the data queue, you specify the maximum size of
> > any entry. But you can put smaller variable in to it. Also, when
> > you use variable length variable, I think you must also specify
> > the maximum length allowed
> >
> > Denis Robitaille
> > Directeur services techniques
> > Cascades Inc
> > 819 363 5187
> > fax 819 363 5177
> >
> >
> > >>> ALBartell@taylorcorp.com 07/24/01 03:40pm >>>
> > I know this has been addressed before here but I can't get onto
> > the archive
> > part of midrange.
> >
> > I am writing a program to output an XML stream to a data queue
> for a Java
> > pgm to pick up.  Since I am unsure of how big my XML stream could get I
> > would like to venture into variable length variables but I have
> never done
> > them before.  I have seen an example before and I thought all I
> > needed to do
> > was put the keyword 'variable' on the definition but that
> doesn't seem to
> > work.  If someone could post an example that would be great.
> >
> > Also, I am new to data queues.  Can I write one data queue entry that is
> > 2000 characters in length and then right another entry to the same data
> > queue that is 3000 characters in length?  I already know how to
> write to a
> > data queue but I don't know if what I described above is allowed.
> >
> > Thanks,
> > Aaron Bartell
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