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Subject: Re: Coexisting with WebObjects
From: Joseph Senecal <senecal@apple.com>
In-reply-to: <52825D07-D45C-46B7-8A5F-F6C680D4E889@gmail.com>
Date: Thu, 11 Aug 2011 09:53:49 -0700
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To: user@cayenne.apache.org

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:
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 webObjects.

Cayenne:
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. 

Joe

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

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