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https://issues.apache.org/jira/browse/CXF-5701?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13976750#comment-13976750
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Sergey Beryozkin commented on CXF-5701:
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The request and response contexts can provide the relevant info, example, you
can check the response entity, etc. However, I'm not sure what is the right way
to get ETag generated inside the filter persisted inside the application
resource, may be have it implementing ContainerResponseFilter, etc...It can
become a bit not clean all right...Hence the need for the improvement :-)
> wadl response with JAXB + headers should optionally generate JAX-RS Response
> ----------------------------------------------------------------------------
>
> Key: CXF-5701
> URL: https://issues.apache.org/jira/browse/CXF-5701
> 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 below:
> {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 users.</doc>
> </param>
> <param name="Cache-Control" style="header" type="xsd:string">
> <doc>The Cache-Control header as specified through configuration
> in context.xml.</doc>
> </param>
> <param name="Vary" style="header" type="xsd:string">
> <doc>MUST have the value "Authorization", as we vary on the
> Authorization header.</doc>
> </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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