Re: [xmlblaster] Dinamically routing messages

[Marcel Ruff <mr at marcelruff.info>]

Roque Daudt wrote:

> Hi.
>
> I was asked to come up with a proposal to a messaging framework to
> support data exchange over HTTP between national-wide business
> partners.
>
> The transactions are simple and the xml structure (the DTD) is always
> the same. However, delivery must be guaranted and only one of the many
> business partners will be chosen as the actual message's destination.
>
> Can xmlblaster be used to dinamically route messages of the same type
> to different destinations based on some specific value enclosed in the
> xml message?
If the server can make the decision who receives the message it
should be possible to write a little mime-publish-plugin
which manipulates the QoS of a received message:
It just adds a Destination PtP address of the receiver.

See

http://www.xmlblaster.org/xmlBlaster/doc/requirements/mime.plugin.publishfilter.html
http://www.xmlblaster.org/xmlBlaster/doc/requirements/mime.plugin.publishfilter.howto.html

how to write and register such a plugin.

See

http://www.xmlblaster.org/xmlBlaster/doc/requirements/engine.qos.publish.destination.PtP.html

on how to add a destination tag to the QoS of a publish message.

> It looks to me as a model in which every entity subscribe to the same
> topic but the messaging server delivers the message to only one of them
> and I am not sure if xmlblaster is suitable for this purpose...
The above solution uses the PtP  approach.

When doing it with Publish/Subscribe it is possible as well:

If you register a mime access plugin you would filter the delivery away 
to all
subscribers but one, see

http://www.xmlblaster.org/xmlBlaster/doc/requirements/mime.plugin.accessfilter.html


regards

Marcel

> Thanks in advance for any info.
>
> Roque 
>
> __________________________________
> Do you Yahoo!?
> Yahoo! Calendar - Free online calendar with sync to Outlook(TM).
> http://calendar.yahoo.com
>
>
>