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Specification

Purpose

Builds a clear specification of business rules, where objects can be checked against. The composite specification class has one method called isSatisfiedBy that returns either true or false depending on whether the given object satisfies the specification.

UML Diagram

Code

You can also find this code on GitHub

Item.php

.. literalinclude:: Item.php
   :language: php
   :linenos:

Specification.php

.. literalinclude:: Specification.php
   :language: php
   :linenos:

OrSpecification.php

.. literalinclude:: OrSpecification.php
   :language: php
   :linenos:

PriceSpecification.php

.. literalinclude:: PriceSpecification.php
   :language: php
   :linenos:

AndSpecification.php

.. literalinclude:: AndSpecification.php
   :language: php
   :linenos:

NotSpecification.php

.. literalinclude:: NotSpecification.php
   :language: php
   :linenos:

Test

Tests/SpecificationTest.php

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

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