28 February 2006

Industrial Logic – Papers - A Learning Guide To Design Patterns

Introduction
What is A Study Group?
Definition of a study Group?
Study Group vs. Lectures
Nuts & Bolts
Suggested Navigation
Design Patterns Navigation
Opening Questions
The Moderator’s Responsibility
Opening Questions For A Study Group

Using A Pattern Catalogue

“A Pattern Language” by C.Alexander et al, 1977 OUP.

Skim the attached summary of the language (5 minutes)
Read the attached description of using patterns to build a porch, looking in the catalogue for more detail about the patterns which have been used (10 minutes)
Write a paragraph describing the requirements of a small student hall of residence (5 minutes)
Thinking about the design of a small hall of residence work through Alexander’s instructions on choosing patterns (attached) using his pattern catalogue “A Pattern Language” (20 minutes)
If you have any time left have a look at “The Timeless Way of Building” by C.Alexander, 1979 OUP

PAFSD Portfolio – 2005/6

Complete 4 of the 5 tasks described below.

Task One: Designing with Patterns
Task Two: Coding with Patterns
Task Three: Patterns and Software Development
Task Four: Critiquing Patterns
Task Five: Patterns Blog

What’s this unit about?

Practical
How to use the pattern catalogue?
What’s the pattern going to be about/
Consequency – How is it consequency important?
Have I missed this chapter?
Coursework?
Have you understand the pattern?
Describing your thought.

Introduce the UML Diagram

Reference:
http://www.agilemodeling.com/essays/umlDiagrams.htm

13 Diagrams. 9 Diagrams are important in that.

3 different categories.
Structure – hold date (class, object, component)
Behavior
Interaction

Between two objects. You behave yourself. You interact with other people.

Activity Diagram - Depicts high-level business processes, including data flow, or to model the logic of complex logic within a system

Develop of Software
Customer

All the symbols have different meanings

Actor can be different positions (e.g. actor may be – human being, machine, etc.)

Class Diagram - Shows a collection of static model elements such as classes and types, their contents, and their relationships.

Communication Diagram - Shows instances of classes, their interrelationships, and the message flow between them. Communication diagrams typically focus on the structural organization of objects that send and receive messages. Formerly called a Collaboration Diagram

Object Diagram - Depicts objects and their relationships at a point in time, typically a special case of either a class diagram or a communication diagram.

Class is the collection of objects. Some class will have an object.

Sequence Diagram - Models the sequential logic, in effect the time ordering of messages between classifiers.

Start with the : and underline.
Interact with object diagram
To make sure how it works.

Component Diagram - Depicts the components that compose an application, system, or enterprise. The components, their interrelationships, interactions, and their public interfaces are depicted.

Collection of classes
Rectangle box
A sample.

Package Diagram - Shows how model elements are organized into packages as well as the dependencies between packages.

Deployment Diagram - Shows the execution architecture of systems. This includes nodes, either hardware or software execution environments, as well as the middleware connecting them.

., Database, middleware, web sever telling us the architecture

State Diagram - Describes the states an object or interaction may be in, as well as the transitions between states. Formerly referred to as a state diagram, state chart diagram, or a state-transition diagram.

One object is changed.
Good to understand how