Re: Getting portlets to interact? - Newbie....

Ok, Stefan points to much more fundamental flaws...

Thanks Stefan for the clarification


--- Tim Robertson <[email protected]> wrote:

> That sounds interesting  for 2.0...
> 
> Rememeber that I am new to Portlets, but I think:
> The major downside that I can picture, is that the
> Portlets become aware that they are working on
> shared
> data - thus they are no longer living in their own
> little world.  Using my simple example, the Cities
> portlet will need to check a session variable on
> each
> view request to check if it's data (the country) has
> changed.  This could quickly get out of control, as
> there may be another event that it needs to check
> on,
> and another as the system grows - thus a change to
> one
> little portlet, may result in code changes necessary
> all over the place.  
> 
> I wonder if Spring offer anything out the box for
> this?  Perhaps some fAOP interceptors that let you
> fire update events and then the wiring of the
> interaction is extracted from the portlet
> implementation - anyone seen this?  I suspect it to
> not be too hard to acheive.
> 
> Tim
> 
> 
> 
> --- Bruno Farache <[email protected]> wrote:
> 
> > Stefan, I've read that Portlet 2.0 will cover
> > portlet events, do you have
> > any idea how is it going to work?
> > What are the disadvantages of using session to
> > accomplish portlet
> > communication?
> > 
> > On 9/23/06, Stefan Zoerner <[email protected]>
> > wrote:
> > >
> > > Hi Tim!
> > >
> > > Unfortunately, the Portlet 1.0 specification
> does
> > not include events or
> > > messages between two portlets. Some vendors
> offer
> > proprietary solutions
> > > here.
> > >
> > > If the portlets are within the same portlet
> > application, you have the
> > > option to share information between them via the
> > portlet session. The
> > > latter has two scopes, one of them (application
> > scope) is per user and
> > > portlet application.
> > >
> > > It is possible to add/update something in the
> > session with this scope
> > > during the processAction of the first portlet,
> and
> > read/react with the
> > > second portlet within the render phase.
> > >
> > > This proceeding has several disadvantages, but
> in
> > your case, it may
> > > work, and it is standard compliant (i.e. your
> > portlets will run and
> > > interact on all specification conformant portal
> > servers).
> > >
> > > I hope this helps,
> > >      Stefan
> > >
> > >
> > >
> > 
> 
> 
> 
> 	
> 	
> 		
>
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