Getting portlets to interact? - Newbie....

Hi,

I am getting my first hello world portlets running now
(pluto 1.1.0 and spring2.0).

I have portlets running in view and edit mode, but am
wondering the best way to fire events between
portlets?

Suppose I have 2 portlets - one providing a tree view
of the countries of the world, another that provides
the capital city of a country.

I could get both working individually, but can someone
please point me in the best direction for signalling
to the "captial city portlet" when the tree in the
other has changed.  I know that I ned to only signal
this once or else the DB will be hit each time, but
not sure how...

I am only at hour 6 of portlet work, so please
understand that I know very little and any direction
would be greatly appreciaed - no matter how trivial.

Thanks,

Tim
(I know this is a pluto list but Im hoping the users
may be able to help)


		
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