jsr339-experts@jax-rs-spec.java.net

[jsr339-experts] Re: Matching algorithm doesn't recurse back on Locators

From: Bill Burke <bburke_at_redhat.com>
Date: Fri, 17 May 2013 08:59:58 -0400

On 5/17/2013 4:35 AM, Sergey Beryozkin wrote:
> Hi Bill
> On 17/05/13 04:41, Bill Burke wrote:
>> Let me give you an example:
>>
>> Given this request:
>>
>> OPTIONS /sub
>>
>> This will match:
>>
>> @Path("/")
>> class Resource {
>>
>> @Path("{id}")
>> public Locator locator() { return new Locator();}
>>
>> }
>>
>> class Locator {
>>
>> @OPTIONS
>> public String options() { return "OK"; }
>> }
>>
>> But this won't match:
>>
>> @Path("/")
>> class Resource {
>>
>> @GET
>> @Path("sub")
>> public String get() { return "OK"; }
>>
>> @Path("{id}")
>> public Locator locator() { return new Locator();}
>>
>> }
>>
> Seems to me it will too. @GET method is selected only if no @OPTIONS is
> available and in this case it is available.
>

Check out the spec. It won't match because "sub" is matched in 2(h).
2(h) says that if there are any non-locator matches, then go to 3, then
3(a) will abort the request.

I ran into this very problem when testing against the TCK. The TCK
assumes there is no loopback to Locators and one of the tests fails.
I'm able to fix this problem quite easily, but, I have some users that
reported this as a "bug". They will now "regress".


-- 
Bill Burke
JBoss, a division of Red Hat
http://bill.burkecentral.com