Hi Manos,
On 27/07/2010 13:57, Emmanouil Batsis (Manos) wrote:
Hello Dan,
On 07/21/2010 12:56 PM, Dan Haywood wrote:
So: the Apache Isis (?) project will provide the ability to ...
Sounds cool. ... Anyway, I checked out the provided URLs and I'm
having a really hard time understanding the plumbing used. Perhaps
some examples would help people (and me!) figure out if they are
interested in participating.
Thanks for the feedback; which means that (a) we should have better info
on the NOF/Isis website, and (b) I should include it in the incubator
proposal.
But to answer your question right here:
* Naked Objects core (http://www.nakedobjects.org/core) has very few
dependencies; indeed when originally written it depended only on crimson
and on log4j, which is why I was able to cross-compile it to .NET as a
J# project from which the commercial .NET version eventually emerged.
* right now the core depends on Apache commons, and I've recently
started using google collections since it's so nice. We've also got a
discussion going on to start using Google Guice in order to remove some
of the boilerplate, though a refinement of that will be to use
JSR299/330 annotations.
* Another thing for the roadmap is to introduce instrumentation,
probably via JMX. Another possibility is to expose more clearly the
transactional boundaries so that we can leverage JTA services (at the
moment the transaction management stuff is pretty much home grown); this
will allow for transactional domain services.
The plugins ((http://www.nakedobjects.org/plugins) and the sister
projects (http://starobjects.org) do have more dependencies:
* the berkeleyDB persistor is a persistor for Oracle Berkely
* the JPA persistor uses Hiberate under the covers; one of the tasks
during incubation will be to replace this with OpenJPA (since Hibernate
is LGPL)
* the Wicket viewer uses Apache Wicket, obviously
* the RESTful viewer uses JBoss RestEasy; again I'll need to change this
to an Apache-license compatible library (probably Jersey)
One of the things that's nice about the architecture is that it's easy
to add in new viewers/persistors based on XYZ technology. One of the
commentators here (Ulrich) has mentioned an interest in a Tapestry
viewer, which would be great; I'm also in discussion with someone
offline about a Vaadin viewer. I'm kinda hoping that during incubation
we might find someone who's might like to write a persistor based on one
of those trendy NoSQL databases such as CouchDB or MongoDB, or perhaps
Apache Cassandra or something from the Hadoop family
Hope that's useful (and hope that inspires people/you) to get involved,
Cheers
Dan
Cheers,
Manos
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