Hello,
If you define Java classes for your representations and then setup automatic conversion via Jackson (org.restlet.jackson.jar) then you should be able to support both JSON and XML formats. Now, it depends what you mean by transformation from a web API point of view.
Best regards,
Jerome
As a recipient of an email from Talend, your contact personal data will be on our systems. Please see our contacts privacy notice at Talend, Inc.