Ejb3 entity bean not generating valid sql for postgres 8.1

Question

Hello,
I originally posted this on the jboss seam board as I ran across this error on a seam test example, but it seems it's more generally applicable to ejb3 entity beans not generating sql that postgres can understand. I'll post my message below, all replies are appreciated.
I'm going through the hello world example from the seam book, and I'm getting an error I cannot resolve, that with an auto generated sql statement, that's not valid for postgres 8.1, the database I'm on. Here's my error:
17:40:31,370 INFO [STDOUT] Hibernate: select next value for person_id_seq from dual_person_id_seq
17:40:31,394 WARN [JDBCExceptionReporter] SQL Error: 0, SQLState: 42601
17:40:31,394 ERROR [JDBCExceptionReporter] ERROR: syntax error at or near "value"
17:40:31,396 FATAL [application] javax.ejb.EJBException: javax.persistence.PersistenceException: org.hibernate.exception.SQLGrammarException: could not get next sequence value
javax.faces.el.EvaluationException: javax.ejb.EJBException: javax.persistence.PersistenceException: org.hibernate.exception.SQLGrammarException: could not get next sequence value
Here's the table definition
- create table Person (id bigint not null, name varchar(255), primary key (id))
- create table dual_person_id_seq (zero integer)
- create sequence person_id_seq start with 1 increment by 1
and here's the entity bean:
@Entity
@Name("person")
@Table(name="person")
@SequenceGenerator(name="person_sequence", sequenceName="person_id_seq")
public class Person implements Serializable {
private long id;
private String name;
@Id
@GeneratedValue(strategy = GenerationType.SEQUENCE, generator="person_sequence")
public long getId() { return id;}
public void setId(long id) { this.id = id; }
public String getName() { return name; }
public void setName(String name) { this.name = name; }
How do I get it to generate a valid sql statement for postgres?

Answer 1

I think you should try putting the sequence generator annotation over the primary key field. Try it and be sure it works.
regards,
Michael