User {
    @Id
    id: String
    
    name: String
}

Order {
    @Id
    id: String
    
    @ManyToOne(fetch = FetchType.EAGER)
    @JoinColumn
    user: User
    
    // Meant to be different from Order.user
    // This extra field makes Hibernate use several queries when fetching which then leads to this bug
    @ManyToOne(fetch = FetchType.EAGER)
    @JoinColumn
    targetUser: User
    
    @OneToMany(targetEntity=OrderItem.class, mappedBy="order", fetch=FetchType.EAGER)
    orderItems: Set<OrderItem>
}

OrderItem {
    @Id
    id: String
    
    @ManyToOne(fetch = FetchType.LAZY)
    @JoinColumn
    order: Order
    
    // Same as Order.user
    // Note that unlike Order.user, here it is LAZY
    @ManyToOne(fetch = FetchType.LAZY)
    @JoinColumn
    user: User
}