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Exploring Design Patterns Overview


Introduction

  • Whats our World?
  • OK  So Just What is a Design Pattern?
  • Design Patterns are not Esoteric
  • Why Use Patterns?
  • The Adapter Pattern
  • Reviewing Interfaces & Abstract Classes
  • Interface Types
  • Interface Definitions
  • Abstract Methods
  • Abstract Classes
  • Using Abstract Classes
  • Important Principal of OO Design

The Iterator Pattern

  • Patterns: Traversing a Collection
  • A Simple ArrayList
  • Using Our ArrayList
  • Using Our Simple Collection
  • Another Design for Collection Traversal
  • Using Our New Collection
  • Differences in Traversing Our Collection
  • Why is This Important?
  • Why is This a Design Pattern?
  • We Will Expand on Our Design

Design Patterns  Background

  • Design Patterns Arise From Architecture
  • Christopher Alexander
  • The TimelessWay
  • A Core Principle of His Books
  • Patterns in A Pattern Language
  • Sitting Circle (185)
  • Different Chairs (251)
  • Patterns Evolution in Software
  • OOPSLA 88
  • Patterns Evolution in Software
  • Patterns Today

UML Overview

  • Unified Modeling Language (UML)
  • Using UML
  • UML Diagrams
  • Class Diagram
  • Class Diagram Notation
  • Association Relationships in Detail
  • Class Diagram Notation
  • Abstract Class Notation
  • Interface Notation
  • Another Class Diagram

Gang of Four Design Patterns Description

  • What Do We Know Now About Patterns
  • GOF Pattern Description
  • Iterator: Overview
  • Iterator: Motivation
  • Iterator: Applicability
  • Iterator: Structure  Java
  • Iterator: Structure  General
  • Iterator: Participants
  • Iterator: Collaborations and Consequences
  • Iterator: Implementation
  • Implementation: Who Controls the Iteration
  • Implementation: Who Defines the Traversal
  • Implementation: Robustness
  • Iterator: Known Uses and Related Patterns
  • So  What is a Design Pattern?

The GOF Patterns Catalog

  • Organizing the Catalog
  • Creational, Structural, and Behavioral Purpose
  • Class and Object Scope
  • Design Pattern Space
  • The GOF Catalog of Design Patterns

Factory Method Pattern

  • Motivation  Forces and Solution
  • Motivation
  • Factor Method: Iterator Usage
  • Factory Method: General Structure
  • Participants
  • Collaborations and Applicability
  • Applicability
  • Consequences
  • Implementation
  • Known Uses and Related Patterns

Strategy Pattern

  • Motivation  Forces and Solution
  • Structure
  • Alternative to Strategy
  • How Do We Choose Among Alternative?
  • Participants
  • Collaborations and Applicability
  • Consequences
  • Implementation
  • Known Uses and Related Patterns
  • Difference From Factory Method

Decorator Pattern

  • Motivation  Forces and Solution
  • Structure
  • Participants an Collaborations
  • Structure
  • Writer and FilterWriter Classes
  • UpperCaseFilterWriter Class
  • Consequences
  • Implementation
  • Known Uses and Related patterns

Composite Pattern

  • Motivation  Forces
  • Motivation  Solution
  • Structure
  • Participants
  • Collaborations
  • Consequences
  • Implementation
  • Known Uses and Related Patterns

Template Method Pattern

  • Motivation  Forces and Solution
  • Structure
  • Participants and Collaborations
  • Consequences
  • Implementation
  • Known Uses and Related Patterns

Command Pattern

  • Motivation  Forces and Solution
  • Structure
  • Participants and Collaborations
  • Consequences
  • Implementation
  • Undo and Redo
  • Known Uses

Chain of Responsibility Pattern

  • Motivation  Forces
  • Motivation  Solution
  • Structure
  • Participants and Collaborations
  • Consequences/Applicability
  • Implementation
  • Known Uses and Related Patterns

Faade Pattern

  • Motivation  Forces and Solution
  • Structure
  • Participants and Collaborations
  • Consequences/Applicability
  • Implementation
  • Known Uses

Patterns for Enterprise Systems

  • Meeting the Challenge  Technologies
  • Meeting the Challenge  Best Practices
  • Some Patterns for Enterprise Systems
  • Business Delegate
  • Business Delegate: Solution
  • Business Delegate: Structure
  • Business Delegate: Consequences
  • Value Object
  • Value Object: Solution
  • Value Object: Structure
  • Value Object: Consequences
  • Data Access Object (DAO)
  • DAO: Solution
  • DAO: Structure
  • DAO: Consequences
  • Lazy Load
  • Lazy Load: Solution
  • Lazy Load: Consequences

Wrap-Up

  • What Have We Done?
  • So  What Do You Think About Patterns?
  • Where Do We Go From Here?
  • Do We Fit Into Alexanders Vision?
  • Design Patterns Isnt All You Need
  • Have Fun

 

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