Portlet communication

[Enrique Perez <pe...@dit.upm.es>]

Hi all,

I'm trying to bind two portlets together, so when you click a button 
(from an html form) it triggers an action on the other portlet.
I know it is similar to "User browser & User details" portlets from 
"j2-admin" application, but I'm at a very initial stage and I don't want 
to use "vm portlets" nor "jsp portlets". I'm just trying to get the 
concept =)

I've read the portlet specification (v1.0... I seem to remember that 
specification 2.0 deals with portlet communication) and it says that one 
portlet can target itself by creating a "portletURL" (using 
"createActionURL" or "createRenderURL") with the "response" object. That 
way, you can use that URL to target the portlet from an html form or a link.
But, what if I want to target a different portlet? Is there any way to 
get the portletURL from the second portlet within the first one?

I mean, supposed:
·---------------· ·---------------·
| portlet A | ——> | portlet B |
·---------------· / ·---------------·
| html form | /
·---------------·

And I want the portlet B to process one action or another depending on 
the html form (of portlet A).
How can I get the "portletURL" object from portlet B within the portlet 
A so I can include that URL in the action field of the form?

Thanks and regards,
Enrique


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