建造者模式

<?php
/**
* 建造者模式
* -------------
* @author         zhaoxuejie <zxj198468@gmail.com>
* @package     design pattern
* @version     v1.0 2011-12-14
*/

/*产品角色-在指导者的指导下由建造者所创建的那个复杂的对象*/
class Person
{
private $head;
private $body;
private $foot;
//头
public function getHead()
{
return $this->head;
}
public function setHead($head)
{
$this->head = $head;
}

//体
public function getBody()
{
return $this->body;
}
public function setBody($body)
{
$this->body = $body;
}

//脚
public function getFoot()
{
return $this->foot;
}
public function setFoot($foot)
{
$this->foot = $foot;
}
}

/*抽象建造者-创建一个product对象的各个部件指定抽象接口*/
interface PersonBuilder
{

public function buildHead();
public function buildBody();
public function buildFoot();
public function getResult();//产品返还方法
}

/*具体建造者-实现接口*/
class ConcreteBuilder implements PersonBuilder
{
private $person;

function __construct()
{
$this->person = new Person();
}

function buildHead()
{
$this->person->setHead('建造头……');
}

function buildBody()
{
$this->person->setBody('建造身体……');
}

function buildFoot()
{
$this->person->setFoot('建造脚……');
}

function getResult()
{
return $this->person;
}
}

/*导演者-指导者导演者角色与客户端直接打交道，它理解客户端的业务逻辑，
将客户端创建产品的请求拆分成对产品组成部分的请求，
然后调用具体产品角色执行建造操作。它分离了客户端与具体建造者
*/
class Director
{
public function __construct(ConcreteBuilder $builder)
{
$builder->buildHead();
$builder->buildBody();
$builder->buildFoot();
}
}

/*客户端*/
class Client
{
public static function main()
{
$builder = new ConcreteBuilder();
$director = new Director($builder);
$person = $builder->getResult();
echo $person->getHead();
echo $person->getBody();
echo $person->getFoot();
}
}

Client::main();

?>