So a Restlet would need to be thread safe? I think what I'll do is
extend a Restlet with a custom class that supplies a URI to the Router.
Because I'm having Pico handle IoC I'll have it supply an array of these
custom classes to the application. I'll post the code asking others to
look it over. Thanks.
Rob Heittman wrote:
What I don't under stand is in the documents talk about
creating domain object using Resources, but doesn't have the Finder
create them for you limit a developers control?
Yes. In trade for looser binding between a resource and the
infrastructure that manages its URI space.
I find it helpful to think of the Restlet Resource as a resource
wrapper. It is not the actual application domain object itself, but
rather a lightweight object which adapts a domain object to the HTTP
and REST paradigm for the purpose of a single access operation.
This requires trunk ... but we have found a really useful tactic to
be putting things like caches and connection pools at the Application
level, and then in the Resource, do something like:
((MyApplication) getContext().getApplication()).getConnection();
Augment this with some error checking, to ensure that your Resource
is being called in the Context you think it is, and this works
quite well and makes for a very readable code base with minimal
surgery to Finders, minimal storage at the Resource level, and
less overstuffing of the Context.
It is less loosely bound, and makes your Resource dependent on a
particular Application, but if you know that constraint is true
anyway ... it's pretty useful.
Wouldn't it be better to allow a developer to manage the creation
of their own objects?
Well, sure, as you said, with a custom Finder or by skipping the
Finder/Resource paradigm altogether and just attaching a Restlet,
you can do this. I don't think I've read anything where this is
considered a Bad Thing. There have been a number of custom Finder
cases posted to the list, I don't think I have anything new to add.
But the Finder/Resource design is a pretty neat one for separation
of concerns, and we have gotten a lot of value out of it.
- R
--
Justin Stanczak
Stanczak Group
812-735-3600
"All that is necessary for the triumph of evil is that good men do nothing."
Edmund Burke
