Design Patterns used in Zend Framework [closed]

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Closed 7 years ago.

I am preparing talk about general architecture of Zend Framework, and wanted to summarize Design Patterns used in it.

I believe it will be beneficial both for those knowing ZF and learning DPs, and for those knowing DPs and learning ZF. In a former case, one would be able to see real-world application of patterns, and get a better comprehension of framework in the second.

Even brief answers in a form Zend_Contoller_Front: Singleton are good enough, if a little elaboration is provided (for some not-so-obvious cases) it will be even better.

I am primary interested in GoF patterns, as they seem to be the starting point of any DP-adventure.

UPD: Not directly related, but for those who know Java there's extremely complete answer for GoF's DP examples found in Java core.

Answer 1

To provide a sample of what I want, and to help those who suspect I am asking others to do my leg-work evaluate better whether answers to this question might be helpful to someone else (either trying to learn DPs or ZF), here is sample:

Factory Method Pattern:

• there are many cases where so called Simple Factory is used, and there's not a single place where full-fledged Factory Method Pattern is implemented (as described by GoF).
• Examples of Simple Factory include Zend_Cache, Zend_Db, Zend_Log

Answer 2

Since this is a CW now, I'll add the patterns I already gave in the comments:

• Zend_Controller_Front
  • Singleton
  • FrontController
• Zend_Db_Table
  • Table Data Gateway
• Zend_Log
  • Factory Method
  • Adapter
  • Composite
• Zend_Form
  • Composite
  • Decorators
• Zend_Filter and Zend_Validator
  • Strategy

Answer 3

To name some patterns:

• Front Controller pattern in Zend_Controller_Front (index.php + .htaccess)
• Registry pattern in Zend_Registry
• Dependency Injection in Zend_Application_Bootstrap_Bootstrap's container
• Singleton (in grep getInstance)
• Strategy patters in Zend_Form's validators
• Decorator patterns in Zend_Form's decorators
• Adapter pattern in | grep adapter

File and method names are obvious, so grep is your friend.

Any volunteer to edit and provide the links and sample code?

Answer 4

For completeness, one should note that Zend_Form uses a modified decorator pattern. In Zend_Form, the generated content is decorated and not the object itself.

Source: http://devzone.zend.com/1240/decorators-with-zend_form/