Factory design pattern
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This document discusses factory design patterns, which create objects without exposing the instantiation logic to clients. Factory patterns allow for inheritance to easily edit how a class is created and provide alternative class options. Examples of factories include services in Symfony2 that create security objects. The factory pattern abstracts object creation for flexibility and reuse.
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Factory design pattern
- 1. Factory Design Patterns Farhad Safarov
- 2. Real World Examples: • The Bank • The Library
- 3. Advantages: • creates objects without exposing the instantiation logic to the client $obj = new ClassA(new ClassB, new Class C); • It is possible to use inheritance to easily edit how the class is created and put in a different set of classes
- 4. UML
- 5. PHP example:
- 6. Symfony2 • Services • http://api.symfony.com/2.0/Symfony/Bundle/ SecurityBundle/DependencyInjection/Security /Factory/SecurityFactoryInterface.html
- 8. The End • Any questions?
- 9. References: • http://www.oodesign.com/factory-pattern.html • http://www.itec.uni-klu.ac.at/~harald/ds2001/rmi/factory/factory2.html • http://en.wikipedia.org/wiki/Factory_method_pattern