Support @GeneratedValue(strategy = GenerationType.IDENTITY) in @EmbeddedId to auto-update the ID after insert

[deverlex]

Problem
Currently, Ebean does not support using @GeneratedValue(strategy = GenerationType.IDENTITY) inside @EmbeddedId. When using @EmbeddedId with an auto-generated primary key, the generated ID is not updated back into the entity after saving.

Additionally, calling refresh() on the entity results in the following error:

Bean not found during lazy load or refresh. Id:PartitionKey@0(orgId:78) type:class models.viorg.Transaction

This makes it impossible to retrieve the generated ID after saving an entity that uses @EmbeddedId.

Expected Behavior

• When saving an entity with @EmbeddedId, the generated ID should be automatically set back into the entity.
• refresh() should not be required to retrieve the generated ID.

Example Code
Current behavior (not working as expected)

@Embeddable
public class AId implements Serializable {
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long id; // This should be auto-generated from DB

    private Long orgId;

    // Constructors, Getters, Setters...
}

@Entity
public class A {
    @EmbeddedId
    private AId id;
}

A a = new A();
a.setId(new AId(null, 100L)); // Setting only orgId, expecting id to be auto-generated
ebeanServer.save(a);

// Expected: a.getId().getId() should contain the generated ID
// Actual: a.getId().getId() remains null unless I manually refresh()

Expected behavior (similar to @id)

@Entity
public class B {
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long id;
}

B b = new B();
ebeanServer.save(b);
System.out.println(b.getId()); // ✅ ID is correctly updated

Why is this important?
This is inconsistent with how @id works

Other JPA implementations (such as Hibernate) also do not auto-update @EmbeddedId, but they provide refresh() as a workaround. It would be great if Ebean could handle this automatically.

Environment
Ebean version: 14.10.0
Database: MariaDB
JDK version: 17

Would it be possible to enhance Ebean to support this behavior for @EmbeddedId? 🚀

[deverlex]

I think I will try dev this func

[deverlex]

I'm use @IdClass, it has been resolved my problems