ANN: PyORQ 0.1 - A Python Object-Relational binding
Mon, 21 Jun 2004 14:11:32 +0200
I am pleased to anounce the release of PyORQ 0.1
PyORQ (Python Object Relational binding with Queries) implements
persistence for Python objects using a relational database (PostgreSQL,
MySQL, SQLite) for storage.
With PyORQ you can use Python expressions to write queries which are
automatically translated into SQL and executed by the backend. This
leverages the search capabilities of RDBMSs in an object-oriented
PyORQ 0.1 is a technology demo. It's purpose is to demonstrate the
possibility to translate python expressions into SQL queries and to
solicit feedback on this approach and its implementation
PyORQ 0.1 features:
o A notation for describing persistent objects, based on Python properties.
o Automatic creation of tables, based on the persistent object definition.
o A native Python notation to describe queries.
o Support for OO-programming (inheritance, encapsulation, polymorphism).
- Persistent objects may refer to other persistent objects and queries
- References to objects of a particular type may also refer to
subclasses of that type.
- Queries on a type, may return subclasses of that type.
o Interfaces to several SQL backends:
- PostgreSQL, based on pyPgSQL by Billy G. Allie.
- MySQL, based on MySQL-Python by Andy Dustman.
- SQLite, based on PySQLite by Michael Owens and Gerhard Haring
o Bugs (undoubtedly)
PyORQ is hosted on sourceforge and is distributed under a MIT license
Download, tutorial, documentation and implementation notes can be found
on the PyORQ web site: