Re: [eclipselink-users] @ManyToMany relationship for a List?

[cowwoc <cowwoc@xxxxxxxxxxxxxxxx>]

FYI, I filed a bug report for the original issue:
https://bugs.eclipse.org/bugs/show_bug.cgi?id=256978

Gili


cowwoc wrote:
> 
> 
> Tim Hollosy wrote:
>> 
>> Anyway, on to your second question. Implementing indexed lists. What
>> do you mean implementing indexed lists on top of JPA?
>> 
>> java.util.List is already indexed..so I don't really follow your
>> question.
>> 
> 
> JPA 1.0 does not retain the element index. The best you can do is
> @OrderBy. If the order is arbitrary (chosen by the end-user) you need to
> rely in ordering by indexes but currently JPA will not manage indexes for
> you under the hood. For example, if you want to insert an element between
> two other elements you will need to update the indexes of all elements
> that allow, etc.
> 
> Gili
> 

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