Thomas Mahler wrote:
Hi Aaron,
Aaron Longwell wrote:
I've looked through the docs for this, but they are, forgive me, rather unclear.
I have an m:n relationship of Bands and Performances.
I want a cascading delete to occur so that whenever the Band is deleted, it's corresponding performances are also deleted.
However, when a performance is deleted, I do not want the corresponding Band to be deleted because that Band may have other performances.
My Band class-descriptor has a collection descriptor called performances.... do I put the auto-delete here?
Yes.
I have set this up... and it is not deleting the records. Oddly, if I do it the other way around, where I put auto-delete on my performance object's reference to the band, then deleting that performance also deletes it's corresponding band. In other words, auto-delete is working from the n side, but not the 1 side.... Auto-Delete is working for reference descriptors but not collection descriptors.
As a workaround, I am manually deleting the performances by doing a deleteByQuery before doing a delete.
Do I need to put an auto-delete anywhere on the performance?
No.
I am unclear as to whether the auto-delete attribute says, delete the class-descriptor which contains this attribute when this reference is deleted.... or if it says, delete this reference if the class-descriptor containing it is deleted.
auto-delete="true" on a reference- or collection-descriptor says:
if an instance of this class is deleted, also delete the referenced object(s) defined by the reference- or class-descriptor.
cheers, Thomas
Thanks for the help, Aaron
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