Hi all,
I have problem finding out how to specify the member of the composite key are
foreign keys pointing to primary key of other tables.
For example, If my composite key have 2 columns (A,B). I created wrapper like
public final class CompKey implements Serializable {
private int A;
private int B;
public boolean equals(Object obj) {
..............
}
public int hashcode() {
...........
}
}
Then in my class I will use
@IdClass(CompKey.class)
@Entity
public class MyClass implements Serializable{
private int A;
private int B;
}
But now I want to specify A and B as foreign keys, how do I do that? I tried
using @JoinColumn and add 2 more fields to class MyClass but that gives me
error saying the column names A and B are repeated.
Can someone tell me how to specify A and B as foreign key but can still use
them as composite key at the same time?
Thank you very much in advance,
Lngo
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