> way, the mapping table would be the responsibility > of the pager layer which (up until now) has known > nothing about the btree layer. But with this approach, > the pager layer would need to call the btree layer > recursively. Thinking about that is starting to > make my head spin.
> Does anybody have any other ideas for doing this > mapping? Please see my description of the shadow pager in http://www.sqlite.org/cvstrac/wiki?p=BlueSky It does what Ben wants without changing any code above the pager layer. However, the file format is not compatible, and the design depends on a single process (but multiple threads). In other words, it needs a client server architecture for multiple processes or networked processors. It may be possible to overcome this constraint, but I have not thought hard about that. I started coding the shadow pager, but got redirected by paying work. I may return to it at some point. The design still seems good to me. e --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
