php设计模式 Builder(建造者模式)

复制代码 代码如下: 
/**
* 建造者模式
*
* 将一个复杂对象的构建与它的表示分离,使用同样的构建过程可以创建不同的表示
*/
class Product
{
public $_type = null;
public $_size = null;
public $_color = null;

public function setType($type)
{
echo "set product type
"; 
$this->_type = $type; 
} 

public function setSize($size) 
{ 
echo "set product size
"; 
$this->_size = $size; 
} 

public function setColor($color) 
{ 
echo "set product color
"; 
$this->_color = $color; 
} 
} 

$config = array( 
"type"=>"shirt", 
"size"=>"xl", 
"color"=>"red", 
); 

// 没有使用bulider以前的处理 
$oProduct = new Product(); 
$oProduct->setType($config['type']); 
$oProduct->setSize($config['size']); 
$oProduct->setColor($config['color']); 


// 创建一个builder类 
class ProductBuilder 
{ 
var $_config = null; 
var $_object = null; 

public function ProductBuilder($config) 
{ 
$this->_object = new Product(); 
$this->_config = $config; 
} 

public function build() 
{ 
echo "--- in builder---
"; 
$this->_object->setType($this->_config['type']); 
$this->_object->setSize($this->_config['size']); 
$this->_object->setColor($this->_config['color']); 
} 

public function getProduct() 
{ 
return $this->_object; 
} 
} 

$objBuilder = new ProductBuilder($config); 
$objBuilder->build(); 
$objProduct = $objBuilder->getProduct();