in tomee/apache-tomee/src/patch/java/org/apache/catalina/authenticator/jaspic/CallbackHandlerImpl.java [131:150]
private Principal getPrincipal(Principal principal, String name, String[] groups) {
// If the Principal is cached in the session JASPIC may simply return it
if (principal instanceof GenericPrincipal) {
return principal;
}
if (name == null && principal != null) {
name = principal.getName();
}
if (name == null) {
return null;
}
List<String> roles;
if (groups == null || groups.length == 0) {
roles = Collections.emptyList();
} else {
roles = Arrays.asList(groups);
}
return new GenericPrincipal(name, roles, principal);
}