<?php
//implementácia rozhrania Mediator
//metoda odoslat() je volaná zamestnancom a slúži k odoslaniu správ
interface Mediator
{
public function send($message, AbstractEmployee $employee);
}
//definovanie rozhrania abstraktnej triedy AbstractEmployee
//trieda obsahuje jedinečný atribút - identifikátor ID, metódu pre čítanie a zápis atribútu
//metóda send($message) volá metódu send() sprostredkovateľa na odosielanie správ
//metóda receive($message) prijíma správy a je definovaná pre každého potomka triedy //AbstractEmployee
abstract class AbstractEmployee
{
protected $ID;
protected $mediator;
public function __construct ($ID, Mediator $mediator)
{
$this -> SetID($ID);
$this -> SetMediator($mediator);
}
public function SetID($ID)
{
$this -> ID = $ID;
}
public function GetID()
{
return $this -> ID;
}
public function SetMediator(Mediator $mediator)
{
$this -> mediator = $mediator;
}
public function GetMediator()
{
return $this -> mediator ;
}
public function send($message)
{
$this -> mediator -> send($message, $this);
}
public abstract function receive($message);
}
//trieda Mediator – zabezpečuje registráciu zamestnancov, odosielanie a prijímanie správ
class NewMediator implements Mediator
{
protected $employee = array();
public function registerEmployee (AbstractEmployee $employee)
{
$this -> employees[] = $employee;
}
public function send($message, AbstractEmployee $sender)
{
foreach ($this -> employees as $employee)
{
if($employee !== $sender)
{
$employee ->receive($message);
}
}
}
}
//potomok triedy AbstractEmployee – trieda Employee
//metódou receive($message) sa volá sprostredkovateľ, ktorému sa odovzdá posielaná správa
class Employee extends AbstractEmployee
{
public function receive($message)
{
printf("Prijatie správy: \n", $this -> GetID, $message);
}
}
//testovací script
$mediator = new NewMediator();
$employee1 = new Employee('Zamestnanec 1', $mediator);
$employee2 = new Employee('Zamestnanec 2', $mediator);
$employee3 = new Employee('Zamestnanec 3', $mediator);
$employee3 = new Employee('Zamestnanec 4', $mediator);
$mediator -> registerEmployee($employee1);
$mediator -> registerEmployee($employee2);
$mediator -> registerEmployee($employee3);
$mediator -> registerEmployee($employee4);
$employee3 -> send('Správa zaslaná od ZAM3');
$employee1 -> send('Správa prijatá od ZAM1');
}
?>