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https://issues.apache.org/jira/browse/TUSCANY-2919?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12702329#action_12702329
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ant elder commented on TUSCANY-2919:
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Prateek, this is really great, i'd love to have JAX-RS support in Tuscany so i
really encourage you to continue developing this, i'm sure you'll find everyone
here will give you all and any help you need.
To help things along i've started commiting this to our 2.x code stream in
r768260 see:
https://svn.apache.org/repos/asf/tuscany/java/sca/modules/binding-rest/
https://svn.apache.org/repos/asf/tuscany/java/sca/modules/binding-rest-runtime/
https://svn.apache.org/repos/asf/tuscany/java/sca/samples/webapps/helloworld-rest/
I've put this in the Tuscany 2.x codestream for now as i'd like to be able to
use it in 2.x, but also because i think it will be easier (and help with) to
use the web integration in 2.x whereas the 1.x webapp integration is a little
fragile. If you really need this for 1.x we can move it there np, or have it in
both, but if you don't have a requirement for 1.x i'd prefer to use 2.x for now.
There's one big issue we need to find a solution for right away, this is using
a modified version of Jersey and we can't do that here in the ASF because it
uses the CDDL license so we can only use it as a binary dependency. Have you
looked at any other JAXRS impls besides Jersey? One possibility would be to use
a different JAXRS impl, Apache CXF has one -
http://repo2.maven.org/maven2/org/apache/cxf/cxf-bundle-jaxrs/2.2/.
> Implement JAX-RS Support in Tuscany 1.4
> ---------------------------------------
>
> Key: TUSCANY-2919
> URL: https://issues.apache.org/jira/browse/TUSCANY-2919
> Project: Tuscany
> Issue Type: New Feature
> Environment: Windows/Linux; Tomcat/Jetty
> Reporter: Prateek Temkar
> Fix For: Java-SCA-1.4
>
> Attachments: jersey-server.zip, SamplesAndDoc.zip, tuscanyModules.zip
>
> Original Estimate: 336h
> Remaining Estimate: 336h
>
> We have been working on a REST binding in Tuscany and have been
> able to implement one. It lets the Tuscany components expose RESTful
> services in addition to other services they can already expose. We
> have used Jersey, the JAX-RS Reference implementation developed by
> Sun
> At a high level, what we do is, after Tuscany identifies that the
> binding involved is the REST-binding, we transfer the request to
> Jersey's ServletContainer. Jersey facilitates the addition of runtime
> annotations to Java programming language class files to define
> resources and the actions that can be performed on those resources.
> Plain Jersey would identify the method (and the arguments )to be
> invoked on a root resource class instance given the URI; Instead, we
> invoke a method in our binding (Tuscany), details below, and return
> the result to Jersey which forms and returns the Http response.
> Here is what we have done in detail:
> - Tuscany ships with the JSON RPC binding. We replicated the JSONRPC
> binding and made the ServiceServlet forward all REST-requests to
> Jersey's servlet engine.
> -We have modified Jersey source code.
> When Jersey is done mapping the URI to the resource and interpreting
> all the annotations in the resource, it transfers control to Tuscany
> (rest-runtime-binding) by invoking a method in our binding. Jersey has
> the following information: - The resource instance on which the method
> is to be invoked, - The Method object corresponding to the method to
> be invoked, - The arguments to the method.
> - We pass the Method object and the arguments to Tuscany by invoking
> a method. We don't pass the instance right away but save it in a
> static map with the thread id as the key (it is a single thread of
> execution). This method creates an instance of Operation using the
> method information and calls wire.invoke() with the Operation and the
> method arguments.
> - Inside the ReflectiveInstanceFactory, in the newInstance() method,
> we get the instance that Jersey has stored in its map (using the
> thread id) and let Tuscany's Injectors operate on it.The result is
> returned by the same chain back to Jersey which eventually returns the
> http response.
> We are aware that there are better ways to officially extend Tuscany
> like how Raymond mentioned at
> http://www.mail-archive.com/[email protected]/msg05857.html but
> nevertheless thought we'd share our experience.
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