Cocoa and ODBC

Its being a long time I have not come here to write... and it has been a long journey since a nice tool come to the desktop to connect a relational database with Cocoa (inside OSX). Since the introduction of the Core Data framework, some years after the deprecation of Objective-C version of EOF, it became a bit of a nightmare to connect an app to a Relational Data Base (as may be Sybase or Oracle)... some attempts to rewrite EOF has been done, e.g. in Alex' Open EOF by Martin

The aim of this new attempt is to use the following mixture: The Odbc Framework is a Cocoa framework providing access to ODBC data sources. It works on top of the iODBC Framework which is a widely portable C-oriented framework that follows the ODBC specification (Open Database Connectivity). The Odbc Framework includes a Cocoa Core Data Persistent Store for Odbc, which will be used here. And finally, we will use as persistence the proposed database Mimer SQL  (: which has a free version for developers :)

My PowerBook died

After fighting with the installation of GNUstep, and just before the national summit of combinatorics in Hermosillo, Sonora, my old Power Book suicide by dropping itself from my bed to the floor...
Since I had to give a talk during the summit, I'd run to the shop and bought a new Intel 2.4 MacBook. While reinstalling everything in it, I received a nice link in the EOF mail-list at omnigroup: GNUstepWeb.
A nice installer with compiled binaries for Tiger and Leopard can be found there at the time, and after an easy install procedure, an Xcode template for a web-app can be found by the new-project wizard... however I tried the link today but, either the server is down, or the page disappear, or something went wrong... so I decided to share the Leopard version in my public folder: MyGNUstepWeb.
The next step is to code a Sybase adaptor...

OpenSource EOF

So long without writing here... but this nightmare took me too much of my time...
In the meantime I had been learning and applying the so called DNA Computing; interesting , but not the aim of these lines.

I found an open implementation of Apple's Objective-C EOF in SourceForge.net... it includes source for an EOModeler, for some Adaptors, and for the frameworks EOAccess and EOControl. Even I am missing the EOInterface layer, that may be replaced with Cocoa Bindings... hopefully!

Copyright ®

Just for the record:

I always forget how to change the classic __My Company__ to my company's name... here is how!

In the file

~/Library/Preferences/com.apple.Xcode.plist

add the following property:

PBXCustomTemplateMacroDefinitions   Dictionary
   ORGANIZATIONNAME   String  Business Applied C Objects