Hello, again!
Ok, my new problem deals with a very simple object graph that isn't
propagating deletes as I expect. Here's the simplified setup:
Entity: Map
has a to-many relationship "rooms" to entity Room -- delete rule Cascade
Entity: Room
has a to-one relationship "map" to entity Map -- delete rule Nullify
These relationships are setup as inverses of each other.
My expectation is that if I delete a map entity, it will also delete
all rooms objects it references.
Now here's my test code:
- (void) testMapRoomCascade
{
NSError *error = nil;
[self createMapAndRoom1];
NSArray *allRooms = [map allRooms: &error];
int nRooms = [allRooms count];
STAssertEquals( 1, nRooms, @"Map should have 1 room after
creating map and room." );
NSArray *allMaps = [map allMaps: &error];
[map delete: [allMaps objectAtIndex: 0]];
int nMaps = [[map allMaps: &error] count];
STAssertEquals( 0, nMaps, @"Map should have 0 maps after map
deletion." );
allRooms = [map allRooms: &error];
nRooms = [allRooms count];
STAssertEquals( 0, nRooms, @"Map should have 0 rooms after map
deletion due to cascade delete rule." ); // <--- This is the error,
since nRooms is still 1!
}
Why isn't the map deletion cascading and causing the room to be
deleted? For what it's worth, I also tried saving the context after
the delete to see if I could force it to propagate, but that didn't
work either.
Wil
--
Wil Hunt
"Life is the art of drawing sufficient conclusions from insufficient
premises."
-- Samuel Butler
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