News Feed
Jobs Feed
Sections




News Archive
Looking for more information on how to do PHP the right way? Check out PHP: The Right Way

PHPMaster.com:
Understanding the Command Design Pattern
January 03, 2012 @ 08:25:29

On PHPMaster.com today there's a new article introducing you to the Command design pattern and looking to help you understand its use a bit better.

The majority of [cell phone] users have opted to receive an email, but a significant number are now opting to receive the notifications via SMS. Here's the problem: How do you send a message via two different channels to both groups of users? The logical approach would be to split the users into 2 groups, email recipients and SMS recipients, which would involve running 2 different queries and sending the codeword to each group separately. Using the Command Pattern, which I will introduce you to in this article, you can send the message to both groups of users in a single process.

He uses the message queue he mentioned as an example - showing how you can can queue up different kinds of objects (actions) based on a common interface into the same process. He creates a "DailyAlertEmail" and "DailyAlertSMS" classes, both with a "send" method. The settings for these are then pulled from a database and the "execute" method on the "MessageQueue" class is called to loop through them, calling "send" to do that work.

0 comments voice your opinion now!
command designpattern tutorial message queue sms email


blog comments powered by Disqus

Similar Posts

Zend Developer Zone: Using a Plugin to Integrate Propel with Zend

Snipe.net: Sending Mail Using PHP and Amazon SES on Centos/AWS Linux

Chris Hartjes' Blog: Using CakePHP's Native Web Service Support

Herbert's Blog: PHP with SQL on Google App Engine

Tony Bibbs' Blog: HOWTO: Deploy Your Application Using PEAR


Community Events











Don't see your event here?
Let us know!


application facebook framework language introduction hack series composer database component install opinion release hhvm unittest package performance podcast security symfony2

All content copyright, 2014 PHPDeveloper.org :: info@phpdeveloper.org - Powered by the Solar PHP Framework