Hi Leon,
In JPA, to delete an object in a collection you need to remove it
from the collection and then call entityManager.remove(..).
EclipseLink adds support for orphan management through a relationship
defined as "private owned". If you specify that a collection is
private owned then removing an element from the collection and
committing your transaction will cause it to be deleted on the
database.
For more info see:
http://wiki.eclipse.org/Using_EclipseLink_JPA_Extensions_(ELUG)#How_to_Use_the_.40PrivateOwned_Annotation
Shaun
Leon Derks wrote:
Hi Tim,
I already tried that, but couldn't get it working.
I will try it again.
Thank you.
Leon
Tim Hollosy wrote:
Leon,
Remove it from your list directly, and as long as you have
CascadeType.REMOVE set on your relationship it will remove it from the
database.
Tim
On Mon, Jun 2, 2008 at 12:02 PM, Leon Derks
<leon.derks@xxxxxxxxxx> wrote:
Hello
I have the follwing Objects:
Product {
List<Characteristic> characteristics;
List<ImageInfo>imageInfos
}
Characteristic{
Product product;
}
ImageInfo{
Product product.
}
But what is the best way to remove a Characteristic object?
I prefer doing: entityManager.remove(characteristic);
But then the characteristic is still in the List in the Product. Why
isn't
the entity cache automatically updated?
How can I clear the cache manually?
Leon
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