The best way I know to manipulate the response object without giving up the simplicity of object->variant conversion is to override the Resource.toRepresentation method. An example of using this technique can be found in the (0-rated) first answer to this question:
http://stackoverflow.com/questions/9015511/setting-etag-lastmodified-on-representation-sent-by-serverresource In your case, you'd want to invent a HasLinks interface, e.g.: interface HasLinks { Iterable<Link> getLinks(); } and implement it for all convertible object types that have links that you want to expose. You can use the Link type from the Atom extension of Restlet or just roll your own. (I did the former, but it was probably overkill.) Then have all of your ServerResource implementations (that might ever return an object that implements HasLinks) extend a common base class that has a clause like this in its toRepresentation implementation: if (source instanceof HasLinks) { for (Link link : (HasLinks) source) { // Add custom header built from link. } } Note that its perfectly OK to use this common base in more places than its ever used, because of the instanceof check. --tim On Mon, Aug 6, 2012 at 1:13 PM, Norm Deane <norm.de...@vanderbilt.edu>wrote: > One of the recipes in the O'Reily RESTful Web Services Cookbook outlines a > way to provide a format-independent means to convey resource links using > HTTP Headers. Something like this... > > # Response > HTTP/1.1 200 OK > Content-Type: application/xml > Link: <http://dss.mc.vanderbilt.edu/patients/123>; > rel="self;type=application/xml" > Link: <http://dss.mc.vanderbilt.edu/patients/123/problems>; > rel="related;type=application/xml" > > What would be the best way to do this within the Restlet framework? Right > now my ServerResources don't do any direct manipulation of the Response and > are pretty lightweight using the ConverterService to handle variant->object > and object->variant conversions. > > > Thanks, > > Norm > > ------------------------------------------------------ > > http://restlet.tigris.org/ds/viewMessage.do?dsForumId=4447&dsMessageId=2996982 > ------------------------------------------------------ http://restlet.tigris.org/ds/viewMessage.do?dsForumId=4447&dsMessageId=2996999
