On Fri, 2003-12-05 at 05:58, Joshua LeVasseur wrote:
On Dec 4, 2003, at 21:41, Jonathan S. Shapiro wrote:
I am looking for a sequence in which A maps to B and B ??? to C and the result would look like:
A -> B A -> C
Is there such an operation?
Also, I forgot to ask: is there some reason why such an operation would be inadvisable?
If you look at the mapping database as a *cache*, then your scenario becomes one which describes the cache behavior, and thus isn't so important in light of the semantics of user-level correctness. In any cache, it is possible for the entries to disappear, and they must be resupplied when needed later.
Josh:
Thank you. I have always been very confused about this view of the mapping cache. It seems tied up with some sharing deficiencies. Would you be kind enough to expand a bit on how the cache gets rebuilt after some element gets removed?
Thanks!