DesignPatternsPHP/StaticFactory/StaticFactory.php at master · NandoKstroNet/DesignPatternsPHP · GitHub

41 lines (37 loc) · 1.17 KB

<?php

namespace DesignPatterns\StaticFactory;

/**

* Static Factory pattern

* Purpose:

* similar to the AbstractFactory, this pattern is used to create series of related or dependant objects.

* The difference between this and the abstract factory pattern is that the static factory pattern uses just one static

* method to create all types of objects it can create. It is usually named "factory" or "build".

* Examples:

* - Zend Framework: Zend_Cache_Backend or _Frontend use a factory method create cache backends or frontends

* Note1: Remember, static => global => evil

* Note2: Cannot be subclassed or mock-upped or have multiple different instances

class StaticFactory

{

/**

* the parametrized function to get create an instance

* @param string $type

* @static

* @throws \InvalidArgumentException

* @return FormatterInterface

public static function factory($type)

{

$className = __NAMESPACE__ . '\Format' . ucfirst($type);

if (!class_exists($className)) {

throw new \InvalidArgumentException('Missing format class.');

}

return new $className();

}

Expand file tree