HTTP Content Negotiation - RESTful Java with JAX-RS 2.0 - page 136

@GET
Response getSomething ( @Context Request request ) {

List < Variant > variants = new new ArrayList < Variant >();

variants . add ( new new Variant (

MediaType . APPLICATION_XML_TYPE ,
"en" , "deflate" ));

variants . add ( new new Variant (

MediaType . APPLICATION_XML_TYPE ,
"es" , "deflate" ));

variants . add ( new new Variant (

MediaType . APPLICATION_JSON_TYPE ,
"en" , "deflate" ));

variants . add ( new new Variant (

MediaType . APPLICATION_JSON_TYPE ,
"es" , "deflate" ));

variants . add ( new new Variant (

MediaType . APPLICATION_XML_TYPE ,
"en" , "gzip" ));

variants . add ( new new Variant (

MediaType . APPLICATION_XML_TYPE ,
"es" , "gzip" ));

variants . add ( new new Variant (

MediaType . APPLICATION_JSON_TYPE ,
"en" , "gzip" ));

variants . add ( new new Variant (

MediaType . APPLICATION_JSON_TYPE ,
"es" , "gzip" ));

// Pick the variant
Variant v = request . selectVariant ( variants );
Object entity = ...; // get the object you want to return

ResponseBuilder builder = Response . ok ( entity );
builder . type ( v . getMediaType ())
. language ( v . getLanguage ())
. header ( "Content-Encoding" , v . getEncoding ());

return return builder . build ();

}