Id in Superclass

ralscha · **Joined:** Fri Oct 03, 2003 10:46 pm **Posts:** 8

Hibernate version: 3.0.5

Mapping documents:Annotations

Hello

I'm using annotations for Hibernate and found a problem with my test application. I have a superclass containing id and version property:

Code:

public abstract class BaseObject implements Serializable {
  
  private Integer id;
  private int version;

  @Id(generate = GeneratorType.AUTO)
  public Integer getId() {    return id;  }

  protected void setId(final Integer id) {    this.id = id;  }

  @Version
  @Column(nullable = false)
  public int getVersion() {    return version;  }

  public void setVersion(final int version) {    this.version = version;  }

}

Then i created a entity class :

Code:

@Entity
public class Category extends BaseObject {

  private String colour;

  @Column(nullable = false, length = 6)
  public String getColour() {    return this.colour;  }

  public void setColour(String colour) {    this.colour = colour;  }
}

This works with Hibernate Annotations 3.0 beta 2 Preview. But it no longer works with the newest source from cvs (June 15, 2005). This error message appears:

org.hibernate.AnnotationException: No identifier specified for entity: Category at org.hibernate.cfg.AnnotationBinder.bindClass(AnnotationBinder.java:494)

Any ideas what i'm doing wrong?

Code:

emmanuel · **Posted:** Thu Jun 16, 2005 9:00 pm

We change our strategy. The spec now mak this area more clear.
Basically you have to tag your superclass as @EmbeddedSuperclass

ralscha · **Joined:** Fri Oct 03, 2003 10:46 pm **Posts:** 8

Thanks for your answer. I changed my superclass and added the @EmbeddedSuperclass tag. Unfortunately i still get the same error message:

Code:

org.hibernate.AnnotationException: No identifier specified for entity: Category
   at org.hibernate.cfg.AnnotationBinder.bindClass(AnnotationBinder.java:496)
   at org.hibernate.cfg.AnnotationConfiguration.secondPassCompile(AnnotationConfiguration.java:174)
   at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:975)

Code:

@EmbeddedSuperclass
public abstract class BaseObject implements Serializable {
  
  protected Integer id;
  protected int version;

  @Id(generate = GeneratorType.AUTO)
  public Integer getId() {    return id;  }

  protected void setId(final Integer id) {    this.id = id;  }

  @Version
  @Column(nullable = false)
  public int getVersion() {    return version;  }

  public void setVersion(final int version) {    this.version = version;  }

}

emmanuel · **Posted:** Fri Jun 17, 2005 5:08 am

don't forget to declare your superclass as a annotated class (in the cfg.xml for example)

ralscha · **Joined:** Fri Oct 03, 2003 10:46 pm **Posts:** 8

That solved the problem. Thanks for your help