从Oracle序列在Hibernate中将字符串作为主键

Question

i have a oracle sequence

CREATE SEQUENCE  HEALTH_MST_CHILD_SEQ  MINVALUE 1 MAXVALUE 9999999999 INCREMENT BY 1 START WITH 1 CACHE 2 ;

Java Class (BO)

@Entity
@Table(name="HEALTH_MST_CHILD")
public class HealthMstChild {
    @Id
    @SequenceGenerator(name="childHealthSeq",sequenceName="HEALTH_MST_CHILD_SEQ",allocationSize=1)
        @GeneratedValue(strategy=GenerationType.SEQUENCE,generator="childHealthSeq")
        @Column(name="CHILD_ID")
        private String childId;
}

Oracle Sequence generate numeric value so it will raise me Exception

Unknown integral data type for ids : java.lang.String

if there is any solution please help me.

Answer 1

Try to_char function.

Eg sequence_no is the integer column that has the sequence value:

sequence_value_char = to_char(sequence_no);

Then use sequence_value_char in your code.