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From Joseph Senecal <>
Subject Re: Coexisting with WebObjects
Date Thu, 11 Aug 2011 16:53:49 GMT
The big one is that WebObjects includes both an ORM and a web interface that understands ORM
objects. You can use WebObjects by itself to develop a Web App that talks to a database where
Cayenne is just the ORM layer. So comparing EOF (WebObjects ORM layer) to Cayenne, here's
what I've noticed so far:

EOF uses it's own collection classes (because it started as Objective C). This sounds like
a bad thing, but having it's own collection classes allows it to do things like provide a
common interface to both NSDictionaries and Enterprise Objects.
Project Wonder: adds functionality and connivence methods
ERXKeys: A Project Wonder wrapper for a typed key that be used to fetch the value from an
Enterprise object, Map, or array. It can generate expression objects and sort order objects
with very clean compact code. This is the piece I'm going to miss most transitioning from

Default settings are an order of magnitude faster than EOF at bulk loading.
Same Expression can be used to fetch either objects or Maps
Built in support for handling LARGE select sets
Built in standard SQL like DB independent query language
Built in support for caching query results

I'm sure I'm missing a lot of features, but these are the differences I can think off of the
top of my head. 


On Aug 11, 2011, at 8:35 AM, John Huss wrote:

> So what are the primary differences between WebObjects and Cayenne?

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