On Mar 8, 2008, at 10:59 AM, Ole Ersoy wrote:
Alex Karasulu wrote:
Oh Ole I'm trying to get this EMF stuff but I'm just not groking
it - still need to back up and read these long emails. Thanks for
not giving up on us - I know the EMF concepts you talk about are
valuable especially when we really trick studio out the way I
dream of.
Thanks for not blocking me as Spam on the mail list :-). I know
when you are doing a big bang, and this Ole guy starts proposing a
big bang on top of the big bang, it can be a little over the top.
One thing I can do to make it simpler is just create a simple
little hello world for it, that will demo the key capabilities that
I think will be most valuable for the directory project. Starting
with the simplest XML Schema possible, so that it's much easier to
see what's going on and relate the inputs to the outputs. The
XBean Schema generated something like 40 implementation classes
(Impl posftixed classes), plus corresponding interfaces. Even
though these are the configuration beans, it's still pretty
intensive to think about how the graph of all of those are
constructed from loading server.xml, in addition to general EMF
design concepts, which is all pattern based.
hmmm.... I'm getting the feeling EMF and jaxb have similar goals....
jaxb only generates POJOs, not interface/impl split. This may make
one or the other easier to deal with, I don't know which yet.
I may try to put together a jaxb demo also
thanks
david jencks
But before we invest time in general, we need to make sure we agree
on an understanding of the process in which EMF would be used, the
the general requirements it imposes on server components, such that
everyone has a chance to see whether they would enjoy that type of
development style.
One thing you mentioned was storing the configuration in the DIT.
With the LDAP DAS that would be instant. Just load the generated
model with server.xml, pass it to DAS.save(model) (model is a
reference to the Object that is the root element of server.xml),
and it's instantly in the DIT. Restoring it from the DIT is the
same. DAS.load("DN of root server.xml element"); So there's all
sorts of benefits like that end up being enabled, through use of EMF.
One question that probably should come up during the JPOX
collaboration is whether it can support a similar capability.
So once the dust settle a little, I'll be glad to help further our
understanding of ways EMF could be leveraged.
Have a terrific weekend,
- Ole
