Github has been down for a while, so moving to mailing list.
> Hi @pdinc-oss ,
>
> the issue it is how you define the `IdClass`
>
> for such a case
>
> ```
> @Entity
> @IdClass(PK.class)
> public static class NodeS {
>
> @Id
> @GeneratedValue(strategy = GenerationType.SEQUENCE)
> private Long nid;
>
> @Id
> @ManyToOne
> private HeadS hid;
> ...
> }
> ```
>
> the class has to be
>
> ```
> class PK implements Serializable {
>
> private Long nid;
>
> private HeadS hid;
>
> public PK(Long nid, HeadS hid) {
> this.nid = nid;
> this.hid = hid;
> }
> ...
> }
> ```
JPA 2 spec 2.4.1.3 Examples of Derived Identities,
Case (a): The dependent entity uses IdClass to represent a composite key:
```
public class DependentId {
String name; // matches name of @Id attribute
long emp; // matches name of @Id attribute and type of Employee PK
}
@Entity
@IdClass(DependentId.class)
public class Dependent {
@Id String name;
// id attribute mapped by join column default
@Id @ManyToOne Employee emp;
...
}
```
HeadS is the Entity type and its Id type is Long.
I backed out the changes to SimpleValue.java/AbstractEntityTuplizer.java and
changed the IdClasses to match and it does pass the tests in Hibernate.
But when testing 2.4.1.3, case a without the patch the following tests fails:
- testCompositePkWithIdentityAndFKByAuto: No part of a composite identifier may
be null
- testCompositePkWithIdentityAndFKByAuto2: No part of a composite identifier
may be null
- testCompositePkWithIdentityAndFKBySequence: No part of a composite identifier
may be null
- testCompositePkWithIdentityAndFKBySequence2: No part of a composite
identifier may be null
- testCompositePkWithIdentityAndFKByTable: No part of a composite identifier
may be null
- testCompositePkWithIdentityAndFKByTable2: No part of a composite identifier
may be null
These tests are expected to fail / ignored:
- testCompositePkWithIdentityAndFKByIdentity: No part of a composite identifier
may be null
- testCompositePkWithIdentityAndFKByIdentity2: skipped
-Jason
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