CSC/ECE 517 Fall 2012/ch2b 2w57: Difference between revisions
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The essence of the Abstract Factory Pattern is to "Provide an interface for creating families of related or dependent objects without specifying their concrete classes". | The essence of the Abstract Factory Pattern is to "Provide an interface for creating families of related or dependent objects without specifying their concrete classes". | ||
= Overview = | |||
The abstract factory pattern is a software [http://en.wikipedia.org/wiki/Creational_pattern creational] [http://en.wikipedia.org/wiki/Design_pattern_(computer_science) design pattern] that provides a way to encapsulate a group of individual [http://en.wikipedia.org/wiki/Factory_object factories] that have a common theme without specifying their concrete classes. In normal usage, the client software creates a concrete implementation of the abstract factory and then uses the generic interfaces to create the concrete objects that are part of the theme. The client does not know (or care) which concrete objects it gets from each of these internal factories, since it uses only the generic interfaces of their products. This pattern separates the details of implementation of a set of objects from their general usage and relies on object composition, as object creation is implemented in methods exposed in the factory interface. | |||
=References= | =References= | ||
*^ [|Gamma, Erich[http://www.informit.com/authors/bio.aspx?a=725735c6-e618-488a-9f9b-a3b8344570dc]]; Richard Helm, Ralph Johnson, John M. Vlissides (2009-10-23). "Design Patterns: Abstract Factory". informIT. Archived from the original on 2009-10-23. Retrieved 2012-05-16. "Object Creational: Abstract Factory: Intent: Provide an interface for creating families of related or dependent objects without specifying their concrete classes." | *^ [|Gamma, Erich[http://www.informit.com/authors/bio.aspx?a=725735c6-e618-488a-9f9b-a3b8344570dc]]; Richard Helm, Ralph Johnson, John M. Vlissides (2009-10-23). "Design Patterns: Abstract Factory". informIT. Archived from the original on 2009-10-23. Retrieved 2012-05-16. "Object Creational: Abstract Factory: Intent: Provide an interface for creating families of related or dependent objects without specifying their concrete classes." | ||
Revision as of 00:47, 19 November 2012
Abstract Factory: A directory of sites
The essence of the Abstract Factory Pattern is to "Provide an interface for creating families of related or dependent objects without specifying their concrete classes".
Overview
The abstract factory pattern is a software creational design pattern that provides a way to encapsulate a group of individual factories that have a common theme without specifying their concrete classes. In normal usage, the client software creates a concrete implementation of the abstract factory and then uses the generic interfaces to create the concrete objects that are part of the theme. The client does not know (or care) which concrete objects it gets from each of these internal factories, since it uses only the generic interfaces of their products. This pattern separates the details of implementation of a set of objects from their general usage and relies on object composition, as object creation is implemented in methods exposed in the factory interface.
References
- ^ [|Gamma, Erich[1]]; Richard Helm, Ralph Johnson, John M. Vlissides (2009-10-23). "Design Patterns: Abstract Factory". informIT. Archived from the original on 2009-10-23. Retrieved 2012-05-16. "Object Creational: Abstract Factory: Intent: Provide an interface for creating families of related or dependent objects without specifying their concrete classes."