In my current SQLAlchemy / Zope-based design, I need the following:
- SQLAlchemy table definitions
- classes + mappers
- Zope interfaces
The problem with this design is that much data has to be defined twice, e.g.
the datatype "varchar(50)" should be represented by an interface with
TextLine(max_length="50"). Moreover, any changes such as adding columns etc.
also have to be done in the interface and the table definition.
To overcome this, I just had the idea to use the interface/schema definitions
for the table definition itself. Probably I'm not the first who had this
idea, but I'm not aware of such an extension to interfaces.
Any thoughts on this?
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