Auto Increment Oracle Table Id Mapping With JPA Entity

When you create entities file of the mysql table with JPA, auto increment field 'id' is mapped as follows.

    @Id   
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    @Basic(optional = false)
    @NotNull
    @Column(name = "id")
    private Long id;

However, Oracle doesn't support auto increment. Hence sequence generator is set up for the field id of table. The respective entity mapping for 'id' should be changed as below.

    @Id   
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    @Basic(optional = false)
    @NotNull
    @Column(name = "id")
    private Long id;
    @SequenceGenerator(initialValue=1, sequenceName="INVOICE_SEQ",allocationSize=1,name="invoice_seq_name")
    @GeneratedValue(generator="invoice_seq_name")