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
> +---
> | This is the RPG/400 Mailing List!
> | To submit a new message, send your mail to RPG400-L@midrange.com.
> | To subscribe to this list send email to RPG400-L-SUB@midrange.com.
> | To unsubscribe from this list send email to RPG400-L-UNSUB@midrange.com.
> | Questions should be directed to the list owner/operator:
> david@midrange.com
> +---
>
> +---
> | This is the RPG/400 Mailing List!
> | To submit a new message, send your mail to RPG400-L@midrange.com.
> | To subscribe to this list send email to RPG400-L-SUB@midrange.com.
> | To unsubscribe from this list send email to RPG400-L-UNSUB@midrange.com.
> | Questions should be directed to the list owner/operator:
> david@midrange.com
> +---
>


_________________________________________________________
Do You Yahoo!?
Get your free @yahoo.com address at http://mail.yahoo.com

+---
| This is the RPG/400 Mailing List!
| To submit a new message, send your mail to RPG400-L@midrange.com.
| To subscribe to this list send email to RPG400-L-SUB@midrange.com.
| To unsubscribe from this list send email to RPG400-L-UNSUB@midrange.com.
| Questions should be directed to the list owner/operator:
david@midrange.com
+---
+---
| This is the RPG/400 Mailing List!
| To submit a new message, send your mail to RPG400-L@midrange.com.
| To subscribe to this list send email to RPG400-L-SUB@midrange.com.
| To unsubscribe from this list send email to RPG400-L-UNSUB@midrange.com.
| Questions should be directed to the list owner/operator:
david@midrange.com
+---
+---
| This is the RPG/400 Mailing List!
| To submit a new message, send your mail to RPG400-L@midrange.com.
| To subscribe to this list send email to RPG400-L-SUB@midrange.com.
| To unsubscribe from this list send email to RPG400-L-UNSUB@midrange.com.
| Questions should be directed to the list owner/operator: david@midrange.com
+---