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From "Graham Leggett (JIRA)" <>
Subject [jira] [Commented] (CXF-5701) wadl response with JAXB + headers should optionally generate JAX-RS Response
Date Tue, 22 Apr 2014 12:46:20 GMT


Graham Leggett commented on CXF-5701:

Do you have documentation / an example to show how it would be possible to return an ETag
with a ContainerResponseFilter?

> wadl response with JAXB + headers should optionally generate JAX-RS Response
> ----------------------------------------------------------------------------
>                 Key: CXF-5701
>                 URL:
>             Project: CXF
>          Issue Type: Improvement
>          Components: JAX-RS
>    Affects Versions: 2.7.10
>         Environment: Little-Net:users-api minfrin$ java -version
> java version "1.6.0_65"
> Java(TM) SE Runtime Environment (build 1.6.0_65-b14-462-11M4609)
> Java HotSpot(TM) 64-Bit Server VM (build 20.65-b04-462, mixed mode)
>            Reporter: Graham Leggett
> When I run wadl2java on the following fragment of wadl, I get the API interface defined
> {code}
>        <response status="200">
>          <representation mediaType="application/json" element="user:users"/>
>          <representation mediaType="application/xml" element="user:users"/>
>          <param name="ETag" style="header" type="xsd:string">
>            <doc>The SHA1 hash of the sum of DN and modifiedTimestamp of the matching
>          </param>
>          <param name="Cache-Control" style="header" type="xsd:string">
>            <doc>The Cache-Control header as specified through configuration in
>          </param>
>          <param name="Vary" style="header" type="xsd:string">
>            <doc>MUST have the value "Authorization", as we vary on the Authorization
>          </param>
>          <doc>Return list of users.  Must have admin role to receive the response.

>               Note: no users = empty list with status:200</doc>
>        </response>
> {code}
> {code}
>    @GET
>    @Produces({"application/json", "application/xml" })
>    Users getUsers(@QueryParam("page") Long page, @QueryParam("pageSize") Long pageSize,
@QueryParam("sort") String sort, @QueryParam("fl") String fl, 
>                @HeaderParam("If-None-Match") String If_None_Match, @HeaderParam("Authorization")
String Authorization);
> {code}
> The problem with the interface that is being produced above is that we return a JAXB
Users object, with no mechanism to return any of the ETag, Cache-Control or Vary headers as
required by the wadl.
> To maintain backwards compatibility we need an option to send the correct response based
on whether headers are present or not.

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