[Zope] Re: strategies for using external py packages

[Rodrigo Senra]

 [ Jim Abramson ]:
 ------------------
 | > My situation
 | > involves, on the one hand, a sizeable 'instance space' application, and
 | > on the other, some python modules/packages that I need to teach the
 | > instance-space stuff to use.  The instance app is too vast to
 | > realistically rewrite as a zope Product all in one shot - therefore I'm
 | > looking for a sane way to gradually add external functionality (and
 | > later, offload existing functionality from instance -> external).  What
 | > I'm most interested in is a discussion of External Methods vs. Products
 | > as a means for doing this, memory and performance considerations, etc.


 [ Tres Seaver ]:
 ------------------
 | Write a simple Zope product which provides a "façade" object for your 
 | package;  then add an instance of that object to your Zope, and have 
 | your templates / scripts use the external library through it.  In a CMF 
 | / Plone application, such an object would be a "tool".


 [ Jim Abramson ]:
 ------------------
 | > The external code should know nothing about Zope, ZODB etc - so I

 What about making the 'external code' into a Zeo client app sharing
 the same Zeo server with your Zope app ? Tres suggestion is 
 probably cleaner though.

 best regards,
 Senra