Book Image

Oracle JDeveloper 11gR2 Cookbook

By : Nick Haralabidis
Book Image

Oracle JDeveloper 11gR2 Cookbook

By: Nick Haralabidis

Overview of this book

Oracle's Application Development Framework (ADF) for Fusion Web Applications leverages Java EE best practices and proven design patterns to simplify constructing complex web solutions with JDeveloper, and this hands-on, task-based cookbook enables you to realize those complex, enterprise-scale applications. With the help of real-world implementations, practical recipes cover everything from design and construction, to deployment, testing, debugging and optimization. This practical, task-based cookbook takes you, the ADF developer, on a practical journey for building Fusion Web Applications. By implementing a range of real world use cases, you will gain invaluable and applicable knowledge for utilizing the ADF framework with JDeveloper 11gR2. "Oracle JDeveloper 11gR2 Cookbook"ù is a task-based guide to the complete lifecycle of Fusion Web Application development using Oracle JDeveloper 11gR2 and ADF.You will get quickly up and running with concepts like setting up Application Workspaces and Projects, before delving into specific Business Components such as Entity Objects, View Objects, Application Modules and more. Along the way you will encounter even more practical recipes about ADF Faces UI components and Backing Beans, and the book rounds off by covering security, session timeouts and exceptions.With "Oracle JDeveloper 11gR2 Cookbook"ù in hand you will be equipped with the practical knowledge of a range of ready to use implementation cases which can be applied to your own Fusion Web ADF Applications.
Table of Contents (19 chapters)
Oracle JDeveloper 11gR2 Cookbook
Credits
Foreword
About the Author
About the Reviewers
www.PacktPub.com
Preface

Limiting large view object query result sets


In the recipe Limiting the rows fetched by a view object in this chapter, we have seen how to limit the number of rows that can be fetched from the database by a view object. While this technique limits the number of rows fetched from the database to the middle layer, it will not limit the view object query that runs in the database. In this case, a query that produces a result set in the thousands of records will still be executed, which would be detrimental to the application's performance. This recipe takes a different approach - actually limiting the view object query to a predefined row count defined by the specific view object using a custom property.

Getting ready

The recipe uses the SharedComponents and HRComponents workspaces. These workspaces were created in Breaking up the application in multiple workspaces, Chapter 1, Pre-requisites to Success: ADF Project Setup and Foundations and Overriding remove() to delete associated children entities...