On Jan 3, 2012, at 2:32 PM, Mike Orr wrote:

> 
> Reflection is more difficult because you can't map classes to tables
> until they've been reflected, and I'm not sure how it affects
> declarative syntax.

I've recently worked out a way to do this:

http://www.sqlalchemy.org/trac/wiki/UsageRecipes/DeclarativeReflectedBase

and in 0.7.5 or #2356, it will be slightly easier still:

http://www.sqlalchemy.org/trac/ticket/2356

> So some of the global code you have to put in an
> init function, at minimum the table definitions and mapper calls, and
> at maximum the entire declarative classes. Again the Akhet manual
> discusses this.

but yes the reflected approach still needs some point at which you say, 
"reflect and map !"  even if declarative is used.


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