How to map MySQL auto increment field

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MySQL does not have the concept of sequence but uses AUTO_INCREMENT fields to emulate sequence behaviour. Supposing that you have just created this table:

mysql> create table customer (id integer auto_increment, name varchar(25));
Query OK, 0 rows affected (0.03 sec)

Then you can map the id field using a Generation type IDENTITY:

@Entity
@Table
public class Customer  {

    @Id
    @GeneratedValue(strategy=GenerationType.IDENTITY)
    private Long id;

    @NotNull
    private String name;
}