News Feed
Sections




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

PHPMaster.com:
An Intro to Virtual Proxies, Part 1
April 19, 2012 @ 08:52:44

On PHPMaster.com today there's a new tutorial from Alejandro Gervasio about using virtual proxies in your application - a method in development that provides a layer of abstraction on top of domain objects and makes it more efficient to work with (and lazy load) them.

Often referenced by a few other fancy names, the substitute is generically called a virtual proxy, a sort of stand-in that exploits the neatness of Polymorphism and interacts with the actual domain objects. Proxies aren't new to PHP. Doctrine and Zend Framework 2.x make use of them, although with different aims. On behalf of a didactic cause, however, it would be pretty instructive to implement some custom proxy classes and use them for lazy-loading a few basic aggregates from the database, this way illustrating how virtual proxies do their stuff under the hood.

He starts off by setting up a domain model for a "Post" and "Author" - a typical blog example.Based on the definition of these classes, he creates a mapper class to generate Author objects and an "AuthorProxy" class that uses a "loadAuthor" method to only load in the author's details when a property is requested. He gives a bit more code showing it in action and the difference between using the normal Author and AuthorProxy class.

0 comments voice your opinion now!
virtual proxy tutorial blog author post interface


blog comments powered by Disqus

Similar Posts

DevShed: Comparing Files and Databases with PHP Benchmarking Applications

Job Posting: Ganz Interactive Seeks PHP Developer (Woodbridge, Ontario)

DevShed: Setting up the Foundation for an Extensible Website Engine with PHP 5

Derick Rethans' Blog: Short URLs

Rob Allen: Globally overriding validation messages for ZF2 forms


Community Events





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


update introduction install library opinion tips api release deployment interview community language series framework symfony unittest package laravel podcast zendserver

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