public class HibernateEntity {

   private long id;

   @Id(generate=GeneratorType.AUTO)
   @Column(name="id_")
   public long getId() {return id;}
   public void setId(long id) {this.id=id;}

   public int hashCode() {...}
   public boolean equals() {...}
}

@Entity(access=AccessType.FIELD)
@Table(name="myTable")
public class MyEntity extends HibernateEntity {

   @Column(name="myprop_")
   private String myProperty;

   public long getMyProperty() {return myProperty;}
   public void setId(String myProperty) {this.myProperty=myProperty;}
}

import javax.persistence.EmbeddableSuperclass;
import javax.persistence.GeneratorType;
import javax.persistence.Id;

@EmbeddableSuperclass
public class DomainImpl implements Domain {

   protected String id;

   private String text;

   @Id(generate = GeneratorType.NONE)
   public String getId() {
      return id;
   }
   
   public void setId(String id) {
      this.id = id;
   }

   public String getText() {
      return text;
   }

   public void setText(String text) {
      this.text = text;
   }

}

import gov.blm.ak.model.DomainImpl;
import java.util.Set;
import javax.persistence.*;

@Entity
@Table(name = "assess_meth")
@AttributeOverrides( {
        @AttributeOverride(name="id", column = @Column(name = "assess_meth_cd", unique = false, nullable = false, insertable = true, updatable = true, length = 1, precision = 19, scale = 2)),
        @AttributeOverride(name="text", column = @Column(name = "assess_meth_txt", unique = false, nullable = false, insertable = true, updatable = true, length = 20, precision = 19, scale = 2) )
} )

public class AssessMeth extends DomainImpl implements gov.blm.ak.model.Domain,
      java.io.Serializable {

   private Set<gov.blm.ak.arims.generated.Study> studies;

   public AssessMeth() {}

   @OneToMany(cascade = CascadeType.ALL, fetch = FetchType.LAZY)
   @JoinColumn(name = "assess_meth_cd")
   public Set<gov.blm.ak.arims.generated.Study> getStudies() {
      return this.studies;
   }

   public void setStudies(Set<gov.blm.ak.arims.generated.Study> studies) {
      this.studies = studies;
   }

}