Is it possible to implement dynamic attributes in EJB3? What I mean by "dynamic" is that Session Bean may decide (and tell to Entity Bean), which attribute to get/set (i.e. which database column to use for persisting the value).

@Entity
public class MyEntityBean implements Serializable {

 // Maybe some annotations here
 public String getAttribute(String columnName) {
 // Implementation here
 }

 // Maybe some annotations here
 public void setAttribute(String columnName, String value) {
 // Implementation here
 }

}