In my case under eclipseLink 2.0, there are A, B and C entity class. A has
1:M relationship to B, B has 1:1 relationship to C. A has PK aId, B has PK
aId, bId, C has PK aId and bId, aId is part of PK of B and C, and also FK to
A.
@Entity
class A {
@Id
@Column(name="A_ID")
@GeneratedValue(strategy = GenerationType.AUTO)
private String aId;
@OneToMany( mappedBy="a", cascade = ALL, targetEntity=B.class)
@PrivateOwned
private Set bs;
}
1. why mappedBy="a" is always complaining that Attribute named "a" has
invalid mapping for this relationship. If I removed the @Id in class B for
@ManyToOne, this complain will disappear.
@Entity
class B {
@Column(name="B_ID")
@Id
private int bId;
@ManyToOne(cascade = ALL)
@JoinColumn(name="A_ID", referencedColumnName="A_ID")
@Id
@XmlTransient
private A a;
@OneToOne(optional=false, mappedBy="b", cascade = ALL, targetEntity =
C.class)
@PrivateOwned
private C c;
}
1. why mappedBy="b" is always complaining that Attribute named "b" has
invalid mapping for this relationship. If I removed the @Id in class C for
@ManyToOne, this complain will disappear. But it will compain other thing
"Entity "C" has no Id or EmbeddedId"
@Entity
Class C{
@OneToOne(optional = false)
@JoinColumns({
@JoinColumn(name="A_ID", referencedColumnName="A_ID", insertable = false,
updatable = false),
@JoinColumn(name="B_ID", referencedColumnName="B_ID", insertable = false,
updatable = false),
})
@XmlTransient
@Id
private B b;
}
