<?php

  include_once('BookTitleDecorator.php');
  
    class BookTitleStarDecorator extends BookTitleDecorator {
	
	private $btd;

    public function __construct(BookTitleDecorator $btd_in) {
	  $this->btd = $btd_in;
    }

    function starTitle() {
	  $this->btd->title = Str_replace(" ","*",$this->btd->title);
	}

  }
?>