facelets

I have a <ui:composition> that contains a few elements with explicit ids and some ajax events which reference these ids for partial processing/updating. I encapsulated this fragment of xhtml inside the composition simply so I could use it in a few different places without having to duplicate the code. However, when I use the composition (with <ui:include> ) more than once inside a page, I get duplicate id exceptions. It seems JSF is not wrapping each composition inside its own naming container (like <ui:component> does). Is there a simple way to wrap my composition inside its own naming

I am wondering how to display a List<T> as obtained below in a Facelet: public List<T> searchByString(String string) { return getEntityManager().createNamedQuery("Userdetails.findByUsername").setParameter("username", "%" + string + "%").getResultList(); } Would a <h:dataTable> be a suitable way? You're going need to iterate over it. JSF 2 offers three iteration components out the box. Provided that the User entity look like below, @Entity public class User { private @Id Long id; private String username; private String email; private LocalDate birthdate; // Add/generate getters+setters. } and