Object-Oriented Software Engineering - - PDF document

• Using UML, Patterns, and Java

Object-Oriented Software Engineering

• Bernd Bruegge & Allen H. Dutoit

Object-Oriented Software Engineering: Using UML, Patterns, and Java 2

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Component Leaf

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Composite

Operation() AddComponent RemoveComponent() GetChild()

Children

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Software System Class Subsystem Children * User

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Software Lifecycle Task Activity Children * Manager

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School Department Organization Chart (variable aggregate): Dynamic tree (recursive aggregate): Car Fixed Structure: Doors Wheels Battery Engine Compound Statement Simple Statement Program Block

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Dynamic tree (recursive aggregate):

Composite Pattern

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Picture

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Children Line

Draw()

• The Graphic Class represents

both primitives (Line, Circle) and their containers (Picture)

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* Resource Participant Fund Equipment Schedule Task * Activity con- Facility * Staff Department Team produces Work Set of Work * Product Products * Internal Project Work respon- sumes Package Role * des- * cribes Deliverable sible plays for Organi- zation Structure * * depends Work Product Project Function Project Outcome Work Organizational Unit Work Breakdown

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Composite Patterns Taxonomies Basic Abstractions

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• Delegation

Inheritance

The adapter pattern uses inheritance as well as delegation:

• Interface inheritance is used to specify the interface of the Adapter

class.

• Delegation is used to bind the Adapter and the Adaptee

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Taxonomy in Application Domain Taxonomy in Solution Domain

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Taxonomy in Application Domain Taxonomy in Solution Domain

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VIP Seat (in Vehicle Subsystem) SeatImplementation Stub Code SARTSeat AIMSeat

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public interface SeatImplementation { public int GetPosition(); public void SetPosition(int newPosition); } public class Stubcode implements SeatImplementation { public int GetPosition() { // stub code for GetPosition } ... } public class AimSeat implements SeatImplementation { public int GetPosition() { // actual call to the AIM simulation system } …. } public class SARTSeat implements SeatImplementation { public int GetPosition() { // actual call to the SART seat simulator }... }

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