ADF Exception Handling - Taskflow, Controller, Model

Exception handling in ADF can be done at following three places:

a. Taskflow Exception Handler

b. Extending Controller level ExceptionHandler - for controller level exceptions

c. Extending DCErrorHandlerImpl- for model

• Whenever there is an exception in model layer it is being handled by custom class extending DCErrorHandlerImpl.
• Exception in ADF Controller can be handled by creating a custom class extending Controller level ExceptionHandler.
• If an exception rethrown from above, it can be handled at TaskFlow level exception handler which can be a view activity, router or a method call.

One by one let`s discuss all of them:

ADF integration with Jasper Report

In this post i am just posting a few important steps and code snippet which can be helpful to integrate with Jasper Reports for generating a pdf or an excel.


You need add the following jars from /modules/ext folder of Jasper Reports in your ADF project(fonts related jar need to be added if you are using some specific fonts in your jrxml):

Make sure to add above jars from Add Jar/Directory and not through Add Library, otherwise you will get the following error:

<ActionListenerImpl> <processAction> java.lang.ClassCircularityError: net/sf/jasperreports/engine/JRException

javax.faces.el.EvaluationException: java.lang.ClassCircularityError: net/sf/jasperreports/engine/JRException