RE: [Embedlets-dev] RE: repost of JAPL question...

[Christopher S. <cs...@oo...>]

At some point someone has to do the talking. There is such a thing as
excessive de-coupling, to the point where nothing communicates!

The Event callback pattern is a standard Java design practice so it is a
completely acceptable approach that has no serious drawback. The visibility
is still one-way as the JAPL code is not dependent on the Embedlet API and
can be used in other applications. I  agree with Andrjez that JAPL should
not make Embedlet Event calls - but I do not think that you were proposing
this in the first place.


Christopher Smith
OopScope, LLC.
www.oopscope.com
cs...@oo...
805-276-0598

> Topic tags:[ARCH][JAPL][WIRING][DOCS][MGMT][STRATEGY][NEWBIE]
> _______________________________________________
>
> Chris,
>
> > 2. Asynchronous communication back to the application logic should be
> > handled by a JAPLEvent notifying a JAPLEventListener. Embedlets
> can receive
> > events in this manner and translate them into the appropriate
> EmbedletEvent.
> > (this is already agreed to by all, I believe )
>
> This is exactly how I envisioned JAPL-to-Embedlet interactions
> working because
> it places all of the JAPL-to-Embedlet code in one place.
> Andrzej's position,
> however, is that Embedlets should never receive callback's from
> JAPL devices
> and so this is the issue we need to work through.  Since a number
> of us are
> going to be unavailable for the next week or so I suppose we will
> defer this
> discussion until later.
>
> Your thoughts on leveraging the persistence mechanism in order to
> initialize
> JAPL devices are interesting.  I have not looked at it that way
> before and I am
> going to have to study this approach a bit more.  Since you have a new
> persistence release I will try to download it this weekend and
> give it a spin.
> I will try to get back to you by later on Sunday.
>
> Ted
>
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