[cap-talk] A paper on web-keys

Karp, Alan H alan.karp at hp.com
Fri Jan 18 11:24:54 EST 2008


Sandro Magi wrote:
>
> The one concern I have about "the object is the UI" approach
> is upgrade.
> Web applications are constantly being refactored, and upgrading a
> persistent object store is a *tough* problem. It's my last unsolved
> dilemma with the web-calculus, and there is little discussion
> of this in
> the Waterken docs, so if someone has a solution, please let me know. I
> think upgrade should be covered after the requisite "Hello World!".
>
The UI provides another point of control because people will only bookmark the URLs of the pages, not the links on those pages.  That means I can change the look of any web page to represent the refactoring, and I can change the webkeys behind the links on those pages.

Tyler has produced a tool to roll the persistent store forward to a new version, but I'll let him comment on that.

________________________
Alan Karp
Principal Scientist
Virus Safe Computing Initiative
Hewlett-Packard Laboratories
1501 Page Mill Road
Palo Alto, CA 94304
(650) 857-3967, fax (650) 857-7029
http://www.hpl.hp.com/personal/Alan_Karp




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