Thursday, 22 March 2007

Article: Learn Object Interaction and Mediator Classes in PHP 5

Alejandro Gervasio in the final article of a two part series expands the original mediator class. He says, the expansion will make it capable of maintaining three classes in synchronization.

Alejandro in the first part showed how to implement this mediator pattern known to make a synchronization between a group of PHP classes. He says, when the mediator pattern is applied, there's a single class that implements the logic required to keep all the other classes synchronized with each other. These modifications introduced by one class will be reflected in the others and also these changes will be performed via the interface of the mediator class.

The final part of the article, he explains under the following sections:

• Expanding the initial mediator class: in this section with the help of code examples he expands the initial mediator class with three distinct file handlers.<.
• Building some additional file handling classes: here in this section he gives the definitions of set of classes that are responsible for spawning file handler objects.
• Implementing the Mediator Pattern: this section consists of grouping all the classes previously defined and setting up a practical example where they can all be put to work together.