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

.. image:: uml/uml.png :alt: Alt Specification UML Diagram :align: center

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:

.. _GitHub: https://github.com/DesignPatternsPHP/DesignPatternsPHP/tree/main/Behavioral/Specification .. __: http://en.wikipedia.org/wiki/Specification_pattern