I have a collection implemented with BusinessBaseList, when I call the Remove(item) on the collection I can see the item move from the collection to the deleted items list.
What do I need to do in my collection implementation to get the Child_DeleteSelf to be called when I save the collection?
Or more generally, how does the deleted items list get cleared when the list is saved?
Assuming you are using CSLA 3.x then (and I am quoting PTracker) this should be sufficient:
RaiseListChangedEvents =
false; // update (thus deleting) any deleted child objectsIf your list is a rot list (so not a child list of a root parent object) then just make sure you use the transactional attribute of manually start your transaction in your dataportal.
BusinessBase<ResourceAssignment>, which as far as I can tell in 3.x (I'm using 3.5), there is no DeleteSelf method defined. There is a private void Child_DeleteSelf on ResourceAssignment in the PTracker solution, but the question would be "how do you invoke that method via the data portal?". DataPortal.Delete<T>(..) calls the DataPortal_DeleteABC, but no permutation of Child_DeleteABC.
archimedes:
There is a private void Child_DeleteSelf on ResourceAssignment in the PTracker solution, but the question would be "how do you invoke that method via the data portal?". DataPortal.Delete<T>(..) calls the DataPortal_DeleteABC, but no permutation of Child_DeleteABC.
I'd think you would already be on the "server" side of the data portal when saving changes to a BusinessListBase (BLB) and could invoke child deletion methods directly rather than making further calls over the portal. (e.g. you're already in DataPortal_Update of the BLB when updating/removing the child objects)
Right. One of the enhancements in 3.5, to reduce code, is that BLB contains code to automatically call the right methods on all the items in the collection.
If the BLB is your root object, you do need to override DataPortal_Update(), but in that method you'd just call base.Child_Update() and let BLB do the work.
If the BLB is a child of some other object, it is entirely automatic and you shouldn't have to worry about it at all.
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