OASIS ebXML Messaging Services TC

  • 1.  RE: [ebxml-msg] Pull'ing a specific document

    Posted 03-30-2010 14:01 
    Makesh,

    Actually I was suggesting two approaches.  One is just the traditional backend application UserMessage - but the other is using a hybrid approach with a messaging queue and messaging service.

    I've used this in production for a Grants.gov application built for NIH.

    The actual messages packages are quite large - combination of XML and PDF attachments - so the original submission goes into the queue.  The delivery system then allows external systems to query for messages waiting in the queue (actually this is a webservice via SOAP - but can easily be via ebMS too).

    Having downloaded the current messages in the queue stack - then the external system issues requests to the messaging service - and it goes and gets those from the queue and delivers them.

    Thanks, DW


  • 2.  RE: [ebxml-msg] Pull'ing a specific document

    Posted 03-31-2010 17:19 
    










    


    Thanks David. I didn’t think of leveraging another service to
make the Message available in messaging systems. I think it would be better to
have just one request sent to the messaging system. More like what Pim
suggested.
    


    


    ~Makesh
    


    


    


    


    From: David RR Webber
(XML) [mailto:david@drrw.info]
    
Sent: Tuesday, March 30, 2010 7:01 AM
    
To: Makesh Rao (marao)
    
Cc: ebxml-msg@lists.oasis-open.org
    
Subject: RE: [ebxml-msg] Pull'ing a specific document
    


    


    


    


    


    Makesh,
    


    


    


    


    


    


    Actually I was suggesting two approaches.  One is just the
traditional backend application UserMessage - but the other is using a hybrid
approach with a messaging queue and messaging service.
    


    


    


    


    


    


    I've used this in production for a Grants.gov application built
for NIH.
    


    


    


    


    


    


    The actual messages packages are quite large - combination of XML
and PDF attachments - so the original submission goes into the queue.  The
delivery system then allows external systems to query for messages waiting in
the queue (actually this is a webservice via SOAP - but can easily be via ebMS
too).
    


    


    


    


    


    


    Having downloaded the current messages in the queue stack - then
the external system issues requests to the messaging service - and it goes and
gets those from the queue and delivers them.
    


    


    


    


    


    


    Thanks, DW
    


    


    


    



    
                                                
    
					
                                                    

        
                                                
				
    
                                                
    
                                                    
                                                        
                                                        Original Message
                                                
    
                                                
    


    


    


    Hi David
    


    


    


     
    


    


    


    So this will need to be a UserMessage rather than a Pull
SignalMessage ? Backend implementation is something we have solution for, it
was more on how to get the request for a particular package when Pulling data.
    


    


    


     
    


    


    


    Thanks
    


    


    


    Makesh
    


    


    


     
    


    


    


    


    


    From: David RR Webber (XML) [mailto:david@drrw.info]
    
Sent: Monday, March 29, 2010 5:35 PM
    
To: Makesh Rao (marao)
    
Cc: ebxml-msg@lists.oasis-open.org
    
Subject: RE: [ebxml-msg] Pull'ing a specific document
    


    


    


    


    


     
    


    


    


    


    Makesh,
    


    


    


    


    


     
    


    


    


    


    


    This sounds a bit like interfacing with an RSS server.
 Otherwise this functionality is typically backend application enabled -
from the payload - rather than the messaging system.
    


    


    


    


    


     
    


    


    


    


    


    I know in RSS world people can pull delivery packages out of
sequence - so priority items, or priority customers get handled first.  
    


    


    


    


    


     
    


    


    


    


    


    I assume something similar to that is what they are looking - so
it would require some customization involving a delivery queue - in combination
with the messaging server - so that you instruct the queue to peel a package
off and route it to the AS4 server for dispatch.  So the first thing you
get is a notification of a package having been added to the queue - its size,
priority and its queue id # - and then you issue a request message back to the
server - and it releases it from the queue at that point for actual delivery.
    


    


    


    


    


     
    


    


    


    


    Thanks,
DW

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