Book Image

Domino 7 Application Development

Book Image

Domino 7 Application Development

Overview of this book

Written by Lotus insiders, the book provides a practical guide to developing applications making use of the important features and enhancements introduced in Notes/Domino 7. These experienced experts use their own experiences to map out the benefits you could gain, and the dangers you may face, as you develop Domino applications in your business. Written by specific experts, edited and overseen by Lotus content generator Dick McCarrick, this book is the definitive guide to developing Domino 7 applications. TECHNOLOGY Domino is an application server that can be used as a standalone web server or as the server component of IBM's Lotus Domino product which provides a powerful collaborative platform for development of customized business applications. It also provides enterprise-grade email, messaging, and scheduling capabilities.
Table of Contents (18 chapters)
Domino 7 Application Development
About the Authors
About the Reviewer
Free Chapter
A Short History of Notes and Domino

Fast DbLookups

During our many years of examining applications for performance problems, @DbLookups have popped up more often than we can count. The usefulness of this functionality is undeniable, but so too can be the slowdowns incurred when an application form needs several lookups to large views. Even worse, these @Db formulas often execute even when the document is opened in Read mode. Note that for web applications, drop‑down lists will not execute their @Db formulas in Read mode, but for Notes client applications, they will (at least by default).

The following steps can dramatically improve the performance of @Db formulas in keyword fields, regardless of whether the application is for web browsers or Notes clients:

  1. 1. Create a keyword drop‑down field

  2. 2. Use PostModeChange event to refresh the keyword list

  3. 3. Create a view for the lookup

The following sections describe these three steps in detail.

Creating Keyword Drop‑Down Fields

The first step is to create your keyword drop‑down field...