Saw this in comp.lang.python, thought it might be of interest hereabouts. Haven't used it myself. Dylan
From: "M.-A. Lemburg" <mal@lemburg.com> Organization: eGenix.com Software GmbH To: "Python List @ Python.org" <python-list@python.org> Subject: ANN: eGenix mxODBC Zope Database Adapter, Version 1.0.0 Date: Fri, 28 Feb 2003 21:59:37 +0100
________________________________________________________________________ ANNOUNCEMENT
EGENIX.COM
mxODBC Zope Database Adapter
Version 1.0.0 (for Zope 2.5 and 2.6)
________________________________________________________________________ INTRODUCTION
The eGenix mxODBC Zope Database Adapter (Zope DA) allows you to easily connect your Zope installation to just about any database backend on the market today, giving you the reliability of the commercially supported eGenix.com product mxODBC and the flexibility of the ODBC standard as middle-tier architecture.
Unlike Zope's ZODBC Zope DA, the mxODBC Zope DA works on Windows XP/NT/2000/98/95, Linux and Solaris using the same interface on all platforms.
The mxODBC Zope DA implements thread-safe connection pooling and multiple physical connects per logical Zope connection. You can safely run Z SQL Methods in parallel, achieving a much better performance than ZODBC Zope DA or similar Zope database adapters under heavy load. This makes it ideal for deployment in Zope Clusters and Zope hosting environments where stability and high performance are a top priority.
________________________________________________________________________ FEATURES
* Zope Level 3 Database Adapter: the mxODBC Zope DA is fully multi-threaded and can handle multiple connections to multiple databases.
* Fully compatible to Z SQL Methods.
* Fully compatible to the Znolk SQL Wizard Product and other similar products relying on the common database schema access methods .tables() and .columns().
* Connection Pooling: physical database connections are pooled and kept open, to reduce the connection overhead to a minimum. This is especially important for high latency database connections and ones like Oracle which take a considerable amount of time to setup
* Parallel Execution of Queries on a single logical connection: the mxODBC Zope DA can manage any number of physical connections on a single logical connection. This enables running truly parallel Z SQL Method queries -- a feature not available in other Zope DAs.
* Robust Mode of Operation: connections which have timed out or go away due to network problems are automatically reconnected.
* Cross-platform Connection Objects: The Zope DA will automatically choose the right platform specific ODBC manager for you.
* Per Connection Adjustable ODBC Interface: mxODBC comes with many different subpackages to choose from on Unix. The Zope DA allows you to select these subpackages on a per-connection basis.
* Per Connection Error Handling: you can tell each connection whether it should report ODBC warnings or not; furthermore all warnings and errors are made available as list .messages on the DatabaseConnection object.
* Transaction safe automatic reconnect: when the DA finds that a connection has timed out, it automatically tries a reconnect and replays the transaction on the connection (unlike other DAs which break the transaction scheme by doing a reconnect without replay).
* Built-in Schema Cache: this results in improved performance under heavy load.
* Database Schema Access: all ODBC catalog methods are made available for much better database schema inquiry. The catalog methods allow building generic database interrogation or manipulation tools and facilitates writing database independent Zope products.
________________________________________________________________________ MORE INFORMATION
For more information on the mxODBC Zope DA, licensing and download instructions, please visit our web-site:
________________________________________________________________________
Thank you, -- Marc-Andre Lemburg eGenix.com
Professional Python Software directly from the Source (#1, Feb 28 2003)
Python/Zope Products & Consulting ... http://www.egenix.com/ mxODBC, mxDateTime, mxTextTools ... http://python.egenix.com/
Python UK 2003, Oxford: 32 days left EuroPython 2003, Charleroi, Belgium: 116 days left