private <T extends LinkOrResource> void addMulti(
String name, Collection<? extends T> res, Map<String, T> rs, Map<String, List<T>> multiRs) {
List<T> resource = res == null ? new LinkedList<>() : new LinkedList<>(res);
if (rs.containsKey(name)) resource.add(rs.get(name));
List<T> links = multiRs.get(name);
if (links == null) {
multiRs.put(name, resource);
} else {
links.addAll(resource);
}
}
/**
* @param <T> either a HalResource or a HalLink
* @param name the field name
* @param res the resource to add to the representation
* @param rs
* @param multiRs
*/
private <T extends LinkOrResource> void add(
String name, T res, Map<String, T> rs, Map<String, List<T>> multiRs) {
if (res == null && ignoreNullResources) return;
require(res != null, "Cannot add a null linked or embedded resource");
if (multiRs.containsKey(name)) {
multiRs.get(name).add(res);
} else if (rs.containsKey(name)) {
List<T> ls = new LinkedList<>();
ls.add(rs.remove(name));
ls.add(res);
multiRs.put(name, ls);
} else {
rs.put(name, res);
}
}