CIS 644 Thurs. Sept. 23, 1999 W6A

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CIS 644 Thurs. Sept. 23, 1999 W6A again
scenarios signatures . patterns
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Design Patterns Elements of Reusable
Object Oriented Software Erich Gamma, Richard
Helm, Ralph Johnson, and JohnVlissides
(1997) Pattern Languages of Program
Design Edited by James Coplien and Doug Schmidt
(1995, ...) proceedings from the PLoP
conferences.
http//www.objectmentor
.com/
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The fundamental pattern
Collection-Worker
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Transaction patterns Actor-Participant
Participant-Transaction Place-Transaction
Specific Item - Transaction Transaction -
Trans Line Item Transaction - Subsequent
Trans Trans Line Item - Sub Trans Ln It
Item - Line Item Specific Item - Line Item
Item - Specific Item Associate - Other
Associate Specific Item - Hierarchical Item
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Aggregate patterns Container-Content
Container - Container Line Item Group-Member
Assembly-Part Compound Part - Part
Packet - Packet Component
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Plan patterns Plan-Step Plan - Plan
Execution Step - Step Execution Plan
Execution - Step Execution Plan - Plan Version

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Interaction patterns Peer-Peer Proxy -
Specific Item Publisher-Subscriber Sender -
Pass Through - Receiver Sender-Lookup-Receiver
Caller - Dispatcher - Caller Back
Gatekeeper-Request-Resource
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Gamma Design Pattern Catalog
3 Creational Patterns Abstract
Factory Builder
Factory Method Prototype
Singleton

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4 Structural Patterns Adapter
Bridge Composite
Decorator Facade
Flyweight Proxy

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5 Behavioral Patterns Chain of
Responsibility Command
Interpreter Iterator
Mediator Memento
Observer State Strategy
Template Method Visitor
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C Foundation Classes 1 List 2 Iterator 3
ListIterator 4 Point 5 Rect

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Composite composes objects into tree
structures to represent part-whole
hierarchies. lets clients treat individual
objects and compositions uniformly. p. 163

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Iterator provides a way to access the
elements of an aggregate sequentially without
exposing its underlying representation.
allows mutiple iterations of aggregate to be
concurrent
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