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igo9go
phpDesignPattern
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<?php
/**
* 建造者模式
* 解决问题:消除其他对象的复杂创建过程,这是最佳做法,而且在对象的构造和配置方法改变时,可以尽可能的减少重复更改代码。
*/
class product
{
protected $_type = "";
protected $_size = "";
protected $_color = "";
//假设有三个复杂的创建过程
public function setType($type)
{
$this->_type = $type;
}
public function setSize($size)
{
$this->_size = $size;
}
public function setColor($color)
{
$this->_color = $color;
}
}
$productConfigs = array('type'=>'shirt','size'=>'XL','color'=>'red');
$product = new product();
//创建对象时分别调用每个方法不是最佳做法,扩展和可适应性低
$product->setType($productConfigs['type']);
$product->setSize($productConfigs['size']);
$product->setColor($productConfigs['color']);
//复杂的创建过程中使用构造函数来实现更不可取。
//建造者模式
class productBuilder
{
protected $_product = null;
protected $_configs = array();
public function __construct($configs)
{
$this->_product = new product();
$this->_configs = $configs;
}
public function build()
{
$this->_product->setSize($this->_configs['size']);
$this->_product->setType($this->_configs['type']);
$this->_product->setColor($this->_configs['color']);
}
public function getProduct()
{
return $this->_product;
}
}
$builder = new productBuilder($productConfigs);
$builder->build();
$product = $builder->getProduct();
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