Presentation is loading. Please wait.

Presentation is loading. Please wait.

Feb 200692.3913 Ron McFadyen1 Adapter An adapter converts the interface of a class into another interface the client expects. An adapter lets classes work.

Published by Modified over 9 years ago

Similar presentations

Presentation on theme: "Feb 200692.3913 Ron McFadyen1 Adapter An adapter converts the interface of a class into another interface the client expects. An adapter lets classes work."— Presentation transcript:

1 Feb 200692.3913 Ron McFadyen1 Adapter An adapter converts the interface of a class into another interface the client expects. An adapter lets classes work together that couldn't otherwise (due to incompatible interfaces). Adaptee specificRequest() Adapter request() Target request() Client

2 Feb 200692.3913 Ron McFadyen2 Adapter: Textbook example p.248-51 Adapter: The object that adapts the adaptee to the adapter. In this example, the EnumeratorAdapter adapts the Enumeration interface to the Iterator interface. Adaptee: the object not supporting the target interface. The legacy code in this example uses the Enumeration interface. Target: the interface used by the client. In this example, the client is written to use the Iterator interface. > Iterator Enumeration Adapter > Enumeration Client Adapter adapteradaptee target hasMoreElements() nextElement() hasNext() next() remove() hasNext() next() remove()

3 Feb 200692.3913 Ron McFadyen3 Adapter example sequence diagram :Enumeration:Client hasNext() hasMoreElements() next() nextElement() :EnumerationAdapter remove()

4 Feb 200692.3913 Ron McFadyen4 Factory Method We have two parallel hierarchies, of products and factories. The factory subclasses contain the implementation of the create method – the factory subclasses know what kind of product in the other hierarchy to create. Product Concrete Product Concrete Factory Client Factory Method adaptee factorymethod() other() Factory factorymethod() factoryMethod() is implemented in the creator subclasses product concrete product concrete creator creator

5 Feb 200692.3913 Ron McFadyen5 Factory Method Text example has Pizza Stores creating Pizzas. Each Pizza Store knows what it creates and how to do it. Pizza NYStyleCheezePizza NYPizzaStore Client Factory Method adaptee createPizza() orderPizza() PizzaStore createPizza() createPizza() is the factory method and is implemented in the creator subclasses product concrete product concrete creator creator NYStyleVeggiePizza

6 Feb 200692.3913 Ron McFadyen6 Factory Method :Client orderPizza(veggie)createPizza() create() :NYVeggiePizza :NYPizzaStore

7 Feb 200692.3913 Ron McFadyen7 Command The command pattern encapsulates a request or unit of work into an object > Command Concrete Command Receiver Invoker Command Concrete commandreceiver command action1() action2() execute() setCommand() invoker

8 Feb 200692.3913 Ron McFadyen8 Command > Command lightOn Command Light Remote control Command Concrete commandreceiver command on() off() execute() setCommand() invoker Invoker: asks the command to carry out its purpose Command: the interface for command objects (Holub’s example includes undo() too) Concrete command: an object implementing the command interface – it will ask some receiver to perform certain actions. Receiver: the object that carries out the actions lightOff Command execute() Concrete command

9 Feb 200692.3913 Ron McFadyen9 Command :Light:RemoteControl execute() lightOn() execute() lightOff() :LightOn Command :LightOff Command

Download ppt "Feb 200692.3913 Ron McFadyen1 Adapter An adapter converts the interface of a class into another interface the client expects. An adapter lets classes work."

Similar presentations

Winter 2007ACS-3913 Ron McFadyen1 Duck Example Consider the text example (up to page 6). Each type of duck is a subclass of Duck Most subclasses implement.

Winter 2007ACS-3913 Ron McFadyen1 Duck Example Consider the text example (up to page 6). Each type of duck is a subclass of Duck Most subclasses implement.
Chapter 4: The Factory Pattern. Consider the Following Code Fragment Duck duck; if (picnic) { duck = new MallardDuck(); } else if (hunting) { duck = new.

Chapter 4: The Factory Pattern. Consider the Following Code Fragment Duck duck; if (picnic) { duck = new MallardDuck(); } else if (hunting) { duck = new.
Command Pattern 1. Intent Encapsulates a request as an object, thereby letting you parameterize other objects with different requests, queue or log request,

Command Pattern 1. Intent Encapsulates a request as an object, thereby letting you parameterize other objects with different requests, queue or log request,
March 200692.3913 Ron McFadyen1 Design Patterns In software engineering, a design pattern is a generally repeatable solution to a commonly-occurring problem.

March Ron McFadyen1 Design Patterns In software engineering, a design pattern is a generally repeatable solution to a commonly-occurring problem.
March 200692.3913 Ron McFadyen1 Command The command pattern encapsulates a request or unit of work into an object. An invoker will ask a concrete command.

March Ron McFadyen1 Command The command pattern encapsulates a request or unit of work into an object. An invoker will ask a concrete command.
Feb 200692.3913 Ron McFadyen1 Iterator Pattern Recall Generic UML class diagram The iterator is used to access the elements of some aggregate. The aggregate.

Feb Ron McFadyen1 Iterator Pattern Recall Generic UML class diagram The iterator is used to access the elements of some aggregate. The aggregate.
Informatics 122 Software Design II Lecture 5 Emily Navarro Duplication of course material for any commercial purpose without the explicit written permission.

Informatics 122 Software Design II Lecture 5 Emily Navarro Duplication of course material for any commercial purpose without the explicit written permission.
Feb 200692.3913 Ron McFadyen1 Factory Method Iterator Example : Java collection classes represent an example of the Factory Method design pattern. The.

Feb Ron McFadyen1 Factory Method Iterator Example : Java collection classes represent an example of the Factory Method design pattern. The.
Prototype Pattern Creational Pattern Specify the kinds of objects to create using a prototypical instance, and create new objects by copy this prototype.

Prototype Pattern Creational Pattern Specify the kinds of objects to create using a prototypical instance, and create new objects by copy this prototype.
Spring 2010ACS-3913 Ron McFadyen1 Command The complex remote control (many pairs of buttons; null command) Undo … pages 216+ Macro … pages 224+

Spring 2010ACS-3913 Ron McFadyen1 Command The complex remote control (many pairs of buttons; null command) Undo … pages 216+ Macro … pages 224+
Fall 2009ACS - 3913 Ron McFadyen1 The context maintains an instance of a concrete state subclass State Pattern Each subclass (concrete state) implements.

Fall 2009ACS Ron McFadyen1 The context maintains an instance of a concrete state subclass State Pattern Each subclass (concrete state) implements.
Command Pattern Chihung Liao Cynthia Jiang. Waiter Order Execute() Hamburger Execute() Hot Dogs Execute() Fries Execute() Cook Make Food()

Command Pattern Chihung Liao Cynthia Jiang. Waiter Order Execute() Hamburger Execute() Hot Dogs Execute() Fries Execute() Cook Make Food()
Spring 2010ACS-3913 Ron McFadyen1 Command The command pattern encapsulates a request or unit of work into an object. An invoker will ask a concrete command.

Spring 2010ACS-3913 Ron McFadyen1 Command The command pattern encapsulates a request or unit of work into an object. An invoker will ask a concrete command.
Feb 200692.3913 Ron McFadyen1 Iterator Pattern Generic UML class diagram The iterator is used to access the elements of some aggregate. The aggregate interface.

Feb Ron McFadyen1 Iterator Pattern Generic UML class diagram The iterator is used to access the elements of some aggregate. The aggregate interface.
March 200491.3913 Ron McFadyen1 Adapter An adapter converts the interface of a class into another interface clients expect. An adapter lets classes work.

March Ron McFadyen1 Adapter An adapter converts the interface of a class into another interface clients expect. An adapter lets classes work.
March 200692.3913 Ron McFadyen1 Singleton pattern Singleton is designed to restrict instantiation of a class to one (or a few) objects. Useful when exactly.

March Ron McFadyen1 Singleton pattern Singleton is designed to restrict instantiation of a class to one (or a few) objects. Useful when exactly.
Design Patterns Based on Design Patterns. Elements of Reusable Object-Oriented Software. by E.Gamma, R. Helm, R. Johnson,J. Vlissides.

Design Patterns Based on Design Patterns. Elements of Reusable Object-Oriented Software. by E.Gamma, R. Helm, R. Johnson,J. Vlissides.
Spring 2010ACS-3913 Ron McFadyen1 Duck Example Consider the text example (up to page 6). Each type of duck is a subclass of Duck Most subclasses implement.

Spring 2010ACS-3913 Ron McFadyen1 Duck Example Consider the text example (up to page 6). Each type of duck is a subclass of Duck Most subclasses implement.
Command Pattern When Actions Speak Louder Than Words.

Command Pattern When Actions Speak Louder Than Words.
+ Informatics 122 Software Design II Lecture 8 Emily Navarro Duplication of course material for any commercial purpose without the explicit written permission.

+ Informatics 122 Software Design II Lecture 8 Emily Navarro Duplication of course material for any commercial purpose without the explicit written permission.

Similar presentations

Ads by Google