On Mon, Feb 21, 2011 at 1:56 PM, Rahul <rahul.priyadar...@in.ibm.com> wrote: > When i ran the test cases ( "modeltests/delete/ > test_inheritance_cascade_up" ) which were doing cascade up for > inherited models, it failed for DB2 cause of the fact that DB2 doesn't > support initial deferred constraint checks like behavior, hence it is > must to execute delete statement from child to parent, however when I > traced the sql execution for "modeltests/delete/ > test_inheritance_cascade_up" test case, what I find is Django tried to > execute delete sql from parent to child. I already had the flag > "can_defer_constraint_checks" set to false inside DatabaseFeatures.
To the best of my knowledge, that flag is only used for testing purposes. It is used to identify tests that will be known to fail because of required forward referenced foreign keys in test data. In practice, the only officially supported database that is affected is MySQL/InnoDB. > Wondering if there a hook exists through which i can change the parent > to child execution of sql to child to parent through our DB2 Django > adaptor. No, that hook doesn't exist -- because only because none of the other databases have needed it. As always, if you find yourself in a position where you need a hook or other configuration item in order to support the features (or lack thereof) of your third-party database backend, make a proposal. Yours, Russ Magee %-) -- You received this message because you are subscribed to the Google Groups "Django developers" group. To post to this group, send email to django-developers@googlegroups.com. To unsubscribe from this group, send email to django-developers+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/django-developers?hl=en.
