EntityManager em = JPA.em();

Query query = em.createNamedQuery("selectbook");

List<Book> bookList = query.getResultList();

render( bookList );

   @Entity
    @NamedQueries({
            @NamedQuery(name="selectbook",
                    query="SELECT b FROM Book b"),
    })
    public class Book extends Model {
        public String id;
        public String name;

        public Book(String name) {
            this.name = name;
        }

        public void setName(String name) {
            this.name = name;
        }

        public String getName() {
            return name;
        }
    }