Shared sequence generator for IDs and DB scheme creation using hbm2ddl

Question

all. I have an issue with DB scheme generation via hbm2ddl. I want to use shared sequence generator for all private keys. So I defined it once in some entity.

@Entity
@SequenceGenerator(name = "MY_SEQUENCE_GENERATOR", sequenceName = "MY_SEQ")
public class MyEntity implements Serializable {
 ....
}

Then I want to use this sequence generator for all ids.

public class SomeEntity1 implements Serializable {
  @Id
  @GeneratedValue(strategy = GenerationType.SEQUENCE, generator =  "MY_SEQUENCE_GENERATOR")
  Long id;     
  ....
}

public class SomeEntity2 implements Serializable {
  @Id
  @GeneratedValue(strategy = GenerationType.SEQUENCE, generator =  "MY_SEQUENCE_GENERATOR")
  Long id;     
  ....
}

When I run hbm2ddl ant task I get an exception:

[hibernatetool] javax.persistence.PersistenceException: org.hibernate.AnnotationException: Unknown Id.generator: MY_SEQUENCE_GENERATOR
[hibernatetool] org.hibernate.AnnotationException: Unknown Id.generator: MY_SEQUENCE_GENERATOR

Is it an issue or I'm doing something wrong ?

Answer 1

The solution of this porblem was defining shared @SequenceGenerator in package-ingo.java file for package were my entities placed.