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Home » Eclipse Projects » EclipseLink » Remove child entity from collection: Best practice?
Remove child entity from collection: Best practice? [message #964893] Tue, 30 October 2012 21:49 Go to next message
Christian Eugster is currently offline Christian Eugster
Messages: 134
Registered: July 2009
Location: St. Gallen Switzerland
Senior Member
Hi,

I have following entity classes:

Tectonic and Level have each a list of TectonicsLevels which references both of them. A fourth entity class TectonicsLevelLink references TectonicsLevel one time as parent and one time as child. TectonicsLevel in turn has two collections, a parent and a child collection of TectonicsLevelLink.

My question is (as I tried a lot of configurations without success): What is best practice removing a TectonicsLevel? In OnToMany relationships I have cascadeType.ALL set and orphanRemoval="true". I always get an OptimisticLockException when I remove a TectonicsLevel.

Maybe someone can give me a hint, at least where I find some usefull information about that?

Thank you!
Re: Remove child entity from collection: Best practice? [message #973631 is a reply to message #964893] Tue, 06 November 2012 13:48 Go to previous message
James Sutherland is currently offline James Sutherland
Messages: 1939
Registered: July 2009
Location: Ottawa, Canada
Senior Member

Please include your code. An OptimisticLockException is thrown if the version does not match. For the version to match, you need to read the object in the same transaction and not have another transaction update the version before your commit.


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