I have three objects and relationships:
A->B->C.
I could create a successful true one to one relation between A and B,
below is the code for that
Class A:
@Id(generator="fk")
@GenericGenerator(name="fk", strategy = "foreign", parameters={
@Parameter(name="property", value="b")
})
@Column(name="ID")
public long id;
@OneToOne(cascade=CascadeType.ALL)
@PrimaryKeyJoinColumn
Class B:
@Id(generate = GeneratorType.AUTO)
@Column(name="ID")
public long id;
everthing worked fine using above,
But I would like to have "not true" one-to-one relation Between B and C ie Class C can exist independtly so I have to use auto key gen for C.
My Question is how to create a One to One relation between B and C
I tried persisting the C class I get an exception
"attempted to assign id from null one-to-one property"
I looked in ForeignGenerator.java it takes and requires only one property value. and also other classes and documentation but I could not figure out.
Any help on this would be appreciated!!!
