2023-09-27 10:21:07 +03:00

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`Mediator`__
============
Purpose
-------
This pattern provides an easy way to decouple many components working
together. It is a good alternative to Observer IF you have a "central
intelligence", like a controller (but not in the sense of the MVC).
All components (called Colleague) are only coupled to the
Mediator interface and it is a good thing because in OOP, one good friend
is better than many. This is the key-feature of this pattern.
UML Diagram
-----------
.. image:: uml/uml.png
:alt: Alt Mediator UML Diagram
:align: center
Code
----
You can also find this code on `GitHub`_
Mediator.php
.. literalinclude:: Mediator.php
:language: php
:linenos:
Colleague.php
.. literalinclude:: Colleague.php
:language: php
:linenos:
Ui.php
.. literalinclude:: Ui.php
:language: php
:linenos:
UserRepository.php
.. literalinclude:: UserRepository.php
:language: php
:linenos:
UserRepositoryUiMediator.php
.. literalinclude:: UserRepositoryUiMediator.php
:language: php
:linenos:
Test
----
Tests/MediatorTest.php
.. literalinclude:: Tests/MediatorTest.php
:language: php
:linenos:
.. _`GitHub`: https://github.com/DesignPatternsPHP/DesignPatternsPHP/tree/main/Behavioral/Mediator
.. __: http://en.wikipedia.org/wiki/Mediator_pattern