Hi,
Since you brought up JMS, I think the JAX-RS application is more like a
"MDB" for http. It will be bound to HTTP but it doesn't provide RPC style
services for other components to consume directly (without going through a
http client).
Maybe we should start with an implementation type implementation.jaxrs. The
component type won't have any services. When the component is started, we
register the application (via a Servlet from the JAX-RS server such as
Apache Wink) to the ServletHost. Once it's working, we can explore other
possibilities such as:
* Allowing SCA annotations (especially @Reference/@Property) to be used with
JAX-RS classes so that they can talk to other services (SCA or non-SCA).
* Building a RESTful client story so that SCA components can talk to RESTful
services.
If we like this approach, I can start to produce a prototype based on Apache
wink.
Thanks,
Raymond
--------------------------------------------------
From: "Simon Laws" <[email protected]>
Sent: Thursday, March 25, 2010 10:12 AM
To: <[email protected]>
Subject: Re: JAX-RS as REST binding
On Thu, Mar 25, 2010 at 4:42 PM, Raymond Feng <[email protected]> wrote:
Hi,
Do we really want to allow arbitrary SCA services to be exposed to be
RESTful? REST (resource-oriented) is quite different from RPC
(operation-oriented). IMO, the component has to be designed following the
RESTful style where we might have a few different options:
* Use an interface that is compatible with the Collection pattern
* Use JAX-WS annotations to customize the mapping
Thanks,
Raymond
Good question.
In SCA JMS land, for example, you can use an interface that includes
just onMessage() if you want to get close to the binding protocol or
you can use some arbitrary interface and map to it.
Now REST is slightly different as there are get/put etc. semantics
involved. . I'm not keen on creating more work than absolutely
necessary but maybe a way to answer this is to ask what if we did
allow an arbitrary interface. What rules would that interface have to
obey in order to operate in a RESTfull way?
The default answer is I guess the rules/configuration that JAX-RS
describes. Which means the binding has to do quite a bit of work to
fill in the blanks in terms of the kind of features that JAXRS would
provide.
Simon
