duplicated id column when abstract id methods are defined in a @MappedSuperclass -------------------------------------------------------------------------------- Key: JPA-16 URL: http://opensource.atlassian.com/projects/hibernate/browse/JPA-16 Project: Java Persistence API Issue Type: Bug Environment: Database H2, Hibernate 3.6.4.Final Reporter: Constantino Cronemberger Priority: Minor The following classes: @MappedSuperclass public abstract class BaseEntity { public abstract Long getId(); public abstract void setId(Long id); } @Entity @Table(name="STCB") public class SimpleTestClassB extends BaseEntity { private Long primaryKey; @Override @Id @Column(nullable = false, precision = 10, name = "sb_id") public Long getId() { return primaryKey; } @Override public void setId(Long primaryKey) { this.primaryKey = primaryKey; } } will generate the following table: create table STCB (sb_id number(19,0) not null, id number(19,0), primary key (sb_id)); -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://opensource.atlassian.com/projects/hibernate/secure/Administrators.... - For more information on JIRA, see: http://www.atlassian.com/software/jira