Re: [Webware-discuss] Installing Webware.

[Jason H. <ja...@pe...>]

On Wed, 2002-10-30 at 16:56, Tom Harris wrote:
> Greetings,
> 
> I am about to try a real application using MiddleKit. What I want to do is
> to install the Webware distribution under python/Lib/site-packages, but have
> my app code in an unrelated directory, as this fits in with my existing
> build system, and I can cleanly seperate files from a distribution from
> files that are in source control. 

Good plan.

> The directories that MiddleKit generates (for project Foo) are 
>   - Middle
>     - Foo.mkmodel
>     - GeneratedPy
>     - GeneratedSQL
>   - Foo (my code in here)
> 
> Can I put my code in directory `Foo` at the same level as `Middle`, and what
> is the correct form of import to use?

I think you'll be fine with your structure.  The thing you have to watch
out for is that you should always access stuff in the Middle directory
as a package, doing something like:

import Middle.User

or 

from Middle.User import User

Don't put the Middle directory itself in your python path and then
import your Middle classes directly.

import User

> I have read the statement in the docs
> to the effect that you should be careful not to multiply import the same
> module, and I know the pain that this can cause, so I want to get it right.

I have my code structured like this:

  Lib          # contains miscellaneous support modules for my servlets
  Lib/Middle   # contains the MiddleKit-generated stuff
  Lib/foo      # a package which my servlets use
  Lib/bar      # another package

  MyContext    # contains my servlets, PSPs, etc.


I add Lib to my PYTHONPATH before starting the appserver.  That lets me
do stuff like:
  
import baz

to import the file Lib/baz.py, and

from Middle.User import User

to get at the class in Lib/Middle/User.py.

Hope this helps.

-- 
Jason D. Hildebrand
ja...@pe...