cis 644 tues. nov. 30, 1999 w15a … patterns

CIS 644 Tues. Nov. 30, 1999 W15A

… patterns

schedule: 30: patterns 2: review for exam 7: design proj 9: design proj

email exam2

patterns:

Coad … mostly PD patterns

Gamma… mostly implementation patterns

Coad#1: collection - worker

actually: worker - users - collection

as: clerk - customers - videos

Coad#3: Participant- TransactionCoad#5: SpecificItem - Transaction

as: Customer - Rental Video - Rental

andCoad#6: Transaction - TransLineItem

as: Rental <>- RentalLineItem

Coad#7: Transaction - SubsequentTrans

as:

GrainReservation - TruckDelevery

Coad#14: Container - Contents

as: Flight <>- Reservation

Coad#18: CompoundPart - Part

same as:

Composite - Component

where: Component = PrimitiveComponent

| Composite

Coad#20: Plan - Step

(CIS project)as Budget <>- BudgetPeriod

Coad#26: Proxy - SpecificItem

as : CachedItem - Item

as: LocalItem - ServerItem

as: EditPage - SourcePage

Coad#27: Publisher - Subscriber

same as: Obervable - Observer

as: PD_Item - Item_View

Java data structures: [Bailey1999]common "behavior" patterns:

public interface Enumeration { boolean hasMoreElements();

Object nextElement(); }

public interface Iterator extends Enumeration {

… void reset();

Object value(); }

Java examples for three other "behavior" patterns:

Terrazas ..visitor pattern Liu ........ command pattern

Zhang ... state pattern

Coad chap 4:

adaptor patterns:

as: multiple adaptors multiple thread access

diagrams for other Gamma patterns:

http://ksi.cpsc.ucalgary.ca/~kremer/patterns/

Creational Patterns Abstract Factory Builder Factory Method Prototype x Singleton

Structural Patterns x Adapter Bridge x Composite Decorator Facade Flyweight x Proxy

Behavioural Patterns Chain of Responsibility x Command Interpreter x Iterator Mediator Memento x Observer x State Strategy Template Method x Visitor

reusable items:

patterns: packages: interface, classes components: frameworks: software tools:

End