Book Image

PrimeFaces Cookbook

Book Image

PrimeFaces Cookbook

Overview of this book

PrimeFaces is the de facto standard in the Java web development. PrimeFaces is a lightweight library with one jar, zero-configuration, and no required dependencies. You just need to download PrimeFaces, add the primefaces-{version}.jar to your classpath and import the namespace to get started. This cookbook provides a head start by covering all the knowledge needed for working with PrimeFaces components in the real world. "PrimeFaces Cookbook" covers over 100 effective recipes for PrimeFaces 3.x which is a leading component suite to boost JSF applications. The book's range is wide‚Äí from AJAX basics, theming, and input components to advanced usage of datatable, menus, drag & drop, and charts. It also includes creating custom components and PrimeFaces Extensions.You will start with the basic concepts such as installing PrimeFaces, configuring it, and writing a first simple page. You will learn PrimeFaces' theming concept and common inputs and selects components. After that more advanced components and use cases will be discussed. The topics covered are grouping content with panels, data iteration components, endless menu variations, working with files and images, using drag & drop, creating charts, and maps. The last chapters describe solutions for frequent, advanced scenarios and give answers on how to write custom components based on PrimeFaces and also show the community-driven open source project PrimeFaces Extension in action.
Table of Contents (17 chapters)
PrimeFaces Cookbook
Credits
About the Authors
About the Reviewers
www.PacktPub.com
Preface
Index

Leveraging Schedule's lazy loading feature


The Schedule component provides a calendar to manage events, such as Outlook Calendar or iCal . By default, a whole set of events is eagerly provided via ScheduleModel. That means all events are loaded at once on page load. Lazy loading feature helps to improve performance if we have a huge dataset of events or events take much time to load. In the lazy loading mode, only events that belong to the displayed time frame are fetched.

In this recipe, we will implement a small example for the Schedule component's lazy loading feature.

How to do it...

By default, the view month is displayed, so the user sees a whole month and can switch between months. Assume we have to load events for 12 months and every month needs, on average, 1.5 seconds for event loading. The default eager mode would take 18 seconds (12 x 1.5) to load all events. This is too long, so using the lazy loading feature is recommended to increase performance. The piece of the XHTML...