gistfile1.txt

xquery version "3.0";

module namespace services = "http://my/services";

import module namespace transform = "http://exist-db.org/xquery/transform";
declare namespace rest = "http://exquery.org/ns/restxq";
declare namespace output = "http://www.w3.org/2010/xslt-xquery-serialization";

declare
    %rest:GET
    %rest:path("/data.html")
    %output:media-type("text/html")
    %output:method("html5")
function services:home() {
    transform:transform(services:example1(), doc("/db/my-xml-to-html.xslt"), ())
};

declare
    %rest:GET
    %rest:path("/data.json")
    %rest:produces("application/json")
    %output:method("json")
function services:home-json() {
  services:example1()
};

declare
    %rest:GET
    %rest:path("/data.xml")
    %rest:produces("application/xml")
function services:home-xml() {
  services:example1()
};

declare
    %private
function services:example1() {
    <some>
       <data>hello world</data>
    </some>
};