[ http://jira.andromda.org/browse/HIB-219?page=all ]
Benjamin Lerman updated HIB-219:
--------------------------------
Attachment: hibernate-patch
> Handle bidirectional associations.
> ----------------------------------
>
> Key: HIB-219
> URL: http://jira.andromda.org/browse/HIB-219
> Project: Hibernate Cartridge
> Type: New Feature
> Versions: 3.0M3, 3.0RC1, 3.0 RC2, 3.0 Final, 3.0.1, 3.1M1, 3.1-RC1, 3.1,
> 3.2-RC1
> Reporter: Benjamin Lerman
> Assignee: Carlos Cuenca
> Attachments: hibernate-patch
>
> The hibernate cartridge do not take into account if an association is
> bidirectional when it does generate the getter setter for the association.
> That means it is of the responsibility of the user to synchronize the two
> end of the associations.
> I join a patch that add a "handleBidirectionalAssociations" option to the
> hibernate namespace. When this option is enable, the getter and setter of the
> bidirectional associations are modified so that synchronization of bother
> ends is automatically handled.
> For this, I do the following:
> The property is renamed with a Internal suffix. There is a usual
> getter/setter for this internal attribute, but with a package protected
> visibility.
> The hibernate mapping file are modified to point to this internal attribute.
> An Accessor class is created on the same package as the entity class that
> has public static method that allows direct access to the internal property.
> For a *-to-One relation, usual getter, setter are generated, that
> automatically handle other end of the association, using the Accessor if
> needed.
> For a *-to-Many relation, 4 methods are created: getter, setter, adder and
> remover. All handle bidirectionality. The getter should return an
> unmodificable collection but this is still to do because finding the correct
> Collections.unmodifiableXXX to use does not seem that easy.
> I join the patch as well as the meta-facade model
>
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