[standards-jig] JEP-0060 PubSub question on meta-nodes

troyer troyer at xs4all.nl
Sat Jan 10 16:55:46 UTC 2004


Hello All,

I had a good look through the JEP-0060 PubSub mechanism and had a few
questions about the semantics of a meta-node.  Section 9 of the document
seems to only discuss a meta node as a system node used for internal
management purposes.

Is there any notion of a hierarchy of nodes using the meta node concept?

For example, suppose that I have 4 different groups of colleagues with
which I communicate and share presence via IM on a regular basis.  It
would be easy enough to create a node for each group and then add each
of the group members as subscribers to the appropriate node.  I would
then be able to alter my published presence to different states for each
group. 

Would it be possible to create a meta-node that "owns" each of the 4
group nodes I created?  If so, 2 questions:

What would be the implication of publishing an item to the meta-node?
Would the children nodes forward it to their individual list of
subscribers?

If an item were published to a child node, would that imply that the
node is published to the direct subscribers of the meta-node?

Thanks for any feedback..

Mark

 




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