Advanced Features of ADF - Oracle ADF 11gR2 Development Beginner's Guide - page 279

Diagnostics
This is the place where the logiles are conigured for collecing and analyzing informaion.
The WebLogic Diagnosic framework is responsible for maintaining the logiles, the
diagnosic modules, images, and archives, among others.
Creating an extension
ADF allows you to create an extension or a plugin that will work with JDeveloper 11 g R2.
For example, we might create a plugin in JDeveloper that will allow the user to open the
Model or ViewController project file in Notepad.
The extension development is based on a standard called Open Services Gateway Iniiaive
( OSGI ). More informaion about OSGI can be found at http://www.osgi.org/Main/
HomePage .
You can download the Extension SDK from Oracle by going to Help | Check for Updates .
The URL to download the Extension SDK is as follows:
http://www.oracle.com/ocom/groups/public/@otn/documents/
webcontent/131167.xml#oracle.jdeveloper.esdk