I have a self-referencing entity hierarchy like that:
@Entity
| @Inheritance(strategy=InheritanceType.JOINED)
| public abstract class HrcEntity<T extends HrcEntity> extends ComplexEntity
| {
| private List<T> children;
| private T parent;
|
| @OneToMany(mappedBy="parent", cascade=CascadeType.REMOVE)
| public List<T> getChildren()
| {
| return children;
| }
|
| @ManyToOne(fetch=FetchType.LAZY)
| public T getParent()
| {
| return parent;
| }
|
| }
|
| @Entity
| @Inheritance(strategy=InheritanceType.JOINED)
| public class Node extends HrcEntity<Node>
| {
| ...
| }
so I can do for example:
List<Node> children = node.getChildren();
but deploying these entities I get the error:
"java.lang.IllegalStateException: Property parent has an unbound type and no
explicit target entity."
from my point of view this should work - there is is a table HrcEntity in db
and hibernate simply has to map the column "parent" to the same table.
btw. - if I make HrcEntity non-generic it works, but I get very ugly code with
lot of casts and "instanceof"
any comments? thanks!
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