php设计模式 Mediator (中介者模式)
<?php/**
* 中介者模式
*
* 用一个中介对象来封装一系列的对象交互,使各对象不需要显式地相互引用从而使其耦合松散,而且可以独立地改变它们之间的交互
*/
abstractclass Mediator
{
abstractpublicfunction send($message,$colleague);
}
abstractclass Colleague
{
private$_mediator=null;
publicfunction Colleague($mediator)
{
$this->_mediator =$mediator;
}
publicfunction send($message)
{
$this->_mediator->send($message,$this);
}
abstractpublicfunction notify($message);
}
class ConcreteMediator extends Mediator
{
private$_colleague1=null;
private$_colleague2=null;
publicfunction send($message,$colleague)
{
if($colleague==$this->_colleague1)
{
$this->_colleague1->notify($message);
} else {
$this->_colleague2->notify($message);
}
}
publicfunction set($colleague1,$colleague2)
{
$this->_colleague1 =$colleague1;
$this->_colleague2 =$colleague2;
}
}
class Colleague1 extends Colleague
{
publicfunction notify($message)
{
echo"Colleague1 Message is :".$message."
";
}
}
class Colleague2 extends Colleague
{
publicfunction notify($message)
{
echo"Colleague2 Message is :".$message."
";
}
}
//
$objMediator=new ConcreteMediator();
$objC1=new Colleague1($objMediator);
$objC2=new Colleague2($objMediator);
$objMediator->set($objC1,$objC2);
$objC1->send("to c2 from c1");
$objC2->send("to c1 from c2");本文摘自：http://www.cnblogs.com/bluefrog/archive/2011/06/24/2089406.html
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