Book Image

Oracle ADF Faces Cookbook

By : Amr Gawish, Amr Ismail Gawish
Book Image

Oracle ADF Faces Cookbook

By: Amr Gawish, Amr Ismail Gawish

Overview of this book

Table of Contents (18 chapters)
Oracle ADF Faces Cookbook
Credits
About the Author
Acknowledgments
About the Reviewers
www.PacktPub.com
Preface
Index

Handling general exceptions using task flow templates


One of the great benefits of having a task flow template is to handle general and unhandled exceptions. This can be implemented once you are inside the task flow template, and it'll be included inside any concrete task flow that extends the task flow template.

In this recipe, we will extend the hr-crud-flow task flow to handle a runtime exception that will be thrown by a new button which will be added inside the viewAllEmployees.jsff page fragment. This exception will be handled by an exception handler class, which we will create in this recipe. You can continue from the last recipe, or you can grab this project's recipe by cloning the HandlingExceptionsUsingTFTemplates application from the Git repository.

How to do it…

To know how to handle unhandled exceptions with task flow templates, perform the following steps.

First, we will add a step inside the task flow template to throw the exception by performing the following steps:

  1. Open the hr...