Decorator

Decorator

Purpose

To dynamically add new functionality to class instances.

Examples

• Zend Framework: decorators for Zend_Form_Element instances
• Web Service Layer: Decorators JSON and XML for a REST service (in this case, only one of these should be allowed of course)

UML Diagram

Code

You can also find this code on GitHub

Booking.php

.. literalinclude:: Booking.php
   :language: php
   :linenos:

BookingDecorator.php

.. literalinclude:: BookingDecorator.php
   :language: php
   :linenos:

DoubleRoomBooking.php

.. literalinclude:: DoubleRoomBooking.php
   :language: php
   :linenos:

ExtraBed.php

.. literalinclude:: ExtraBed.php
   :language: php
   :linenos:

WiFi.php

.. literalinclude:: WiFi.php
   :language: php
   :linenos:

Test

Tests/DecoratorTest.php

.. literalinclude:: Tests/DecoratorTest.php
   :language: php
   :linenos: