Hibernate bidirectional manyToOne: How to get Index easily.

[Manuel Petermann]

Hello again.
Lets say we got a customer with orders attached to it.

public class Customer{
	@OneToMany
	@JoinColumn(name = "ORDERS_ID")
	@IndexColumn(name = "ORDERS_INDEX_COL")
	private List<Order> orders = new ArrayList<Order>();

}
public class Order{
	@ManyToOne
	@JoinColumn (name="CUSTOMER_ID")
	private Customer parentCustomer;
}

So is there an easier way than doing:

this.getParentCustomer().getOrders().indexOf(this); 

in an instance of Order. Because that seems to be a little too excessive.
All I want is the index in the array.

Thanks.

[Vijitha Kumara]

If you frequently need this then it might better to have a method for just that?

[Manuel Petermann]

Of course, but I thought that it might be possible to map this value to an int in the right entity.