[DGD] another aspect of persistence

[Noah Gibbs]

  One option is to have an upgraded() function with that kind of thing, and call to it from create().  Phantasmal does this in most of its codebase.

  For data like descriptions, integers, et cetera, you can also have some kind of data storage that's settable with an API call, but that's a pretty significant architectural change from most LPMUDs.

--- On Mon, 9/29/08, chris . <psych_mayo at hotmail.com> wrote:

> From: chris . <psych_mayo at hotmail.com>
> Subject: [DGD] another aspect of persistence
> To: dgd at dworkin.nl
> Date: Monday, September 29, 2008, 1:59 PM
> I've come across another aspect of persistence i need to
> consider in my overall design.  I made up a function to
> update libs and objects.  One of the first things i noticed,
> since I was using set_long(x) in create() for an objects
> long desc, than upgrading does nothing to reflect a change
> to the description (since the object was already created).
> To get around this, I've thought about calling an
> upgrade function in each object getting upgraded which works
> similar to create (for values which don't change over
> time).  In addition i have figured on using something like
> set_long(long() )...or else just have query_long return
> long().
> I've shot down several other ideas i came up with to
> solve this...in fact every solution so far seems to have
> some drawbacks or in the least quite a bit of extra work.
> Im going to hit the drawing board soon, and try to come up
> with a better option than the one i just mentioned.  Im
> particularly concerned that my approach is a real OLC-based
> design killer (requiring values to ultimately be determined
> by a function instead of a variable).
> I wondered how else members of this community dealt with
> this.
> Thanks all,
> -chris
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