I wonder how to map one-to-many with multi-fields as Foreign Key.
Suppose there are two tables:
Table1(
T1F1 NUMBER PRIMARY KEY,
T1F2 NUMBER

)

Table2(
T2F1 NUMBER PRIMARY KEY,
T2F2 NUMBER,
T2F3 NUMBER

)

For Table1, I don't want to use composite key as the primary key.
Although T1F2 is not the the PK of Table1, I need to use it as one of Table2's FKs.Table2' FK is composed of T2F2 and T2F3,which references T1F1 and T1F2 in Table1,respectively.
Based on this assumption, how can I map a one-to-many from Table1 to Table2?
Based on below code, how should the mapping be?
class Class1{
//....
private Set<Class2> parts;

}

Class1 will be mapped to Table1,
while Class1.parts will be mapped Table2,
there is an one-to-many relationship, but how should I setup the mapping?
Thanks in advance!

If someone has a solution for this problem, I am also stuck because of this...

Thanks!

You know, that just might be a potential solution.

Compound primary keys aren't that difficult to implement or manage. And there are many ways to implement compound primary keys, from simply using the @Embeddable notation, to the @IdClass.

Here's a little tutorial on the subject of compound primary keys with Hibernate3 and JPA annotations. Give it a whirl and see if it can't help to solve your problem.



http://www.thebookonhibernate.com/HiberBookWeb/learn.jsp?tutorial=15usingcompoundprimarykeys

Thanks Cameron McKenzie for your information.
There is one thing noticeable: it is harder to load an object with a compound PK, that's why I didn't want use a compound key.