Self referencing symmetrical Hibernate Map Table using @ManyToMany
- by sammichy
I have the following class
public class ElementBean {
private String link;
private Set<ElementBean> connections;
}
I need to create a map table where elements are mapped to each other in a many-to-many symmetrical relationship.
@ManyToMany(targetEntity=ElementBean.class)
@JoinTable(
name="element_elements",
joinColumns=@JoinColumn(name="FROM_ELEMENT_ID", nullable=false),
inverseJoinColumns=@JoinColumn(name="TO_ELEMENT_ID", nullable=false)
)
public Set<ElementBean> getConnections() {
return connections;
}
I have the following requirements
When element A is added as a connection to Element B, then element B should become a connection of Element A. So A.getConnections() should return B and B.getConnections() should return A. I do not want to explicitly create 2 records one for mapping A to B and another for B to A.
Is this possible?
