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- Newsgroups: comp.std.c++
- Path: sparky!uunet!zaphod.mps.ohio-state.edu!cs.utexas.edu!torn!nott!bnrgate!bcrka451!bcrki65!sjm
- From: sjm@bcrki65.bnr.ca (Stuart MacMartin)
- Subject: Re: Zero-length structures and pointer comparisons
- Message-ID: <1992Dec18.202535.2393@bcrka451.bnr.ca>
- Sender: 5E00 Corkstown News Server
- Organization: Bell-Northern Research Ltd., Ottawa, Canada
- References: <1992Dec14.225659.24225@microsoft.com> <9235215.11144@mulga.cs.mu.OZ.AU> <1992Dec17.230520.13836@microsoft.com>
- Date: Fri, 18 Dec 1992 20:25:35 GMT
- Lines: 17
-
- In article <1992Dec17.230520.13836@microsoft.com> jimad@microsoft.com (Jim Adcock) writes:
- >Granted that an inverse mapping can
- >give you the obid from the pointer, its just that such would typically
- >be very slow compared to the address comparisons you expect. Slower
- >than using surrogates for example. So why not use surrogates?
-
- Not to mention the fact that some of us feel that the object id should
- be private information of the OODBMS. I would not like a specification
- that effectively required the oid to escape into the application.
- If I were an OODBMS developer, I might then be tempted to have 2 oids
- per object, one for references and the other for ordering.
-
- Stuart
- --
- : Stuart MacMartin email: sjm@bnr.ca :
- : Bell-Northern Research phone: (613) 763-5625 :
- : PO Box 3511, Stn C, Ottawa, K1Y-4H7, CANADA Standard disclaimers apply. :
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