Adam Hendra Brata

Teknik Informatika FILKOM UB

Semester Genap 2015/2016

TUJUAN PERKULIAHAN

• Memahami pemodelan perancangan dengan pendekatan

berorientasi objek

T E K N I K I N FO R M AT I K A F I L KO M U B

S E M E S T E R G E N A P 2 0 1 5 / 2 01 6

APS

AGENDA PERKULIAHAN

• Pemodelan perancangan berorientasi objek

T E K N I K I N FO R M AT I K A F I L KO M U B

S E M E S T E R G E N A P 2 0 1 5 / 2 01 6

APS

METODE PEMODELAN PERANCANGAN TERSTRUKTUR

T E K N I K I N FO R M AT I K A F I L KO M U B

S E M E S T E R G E N A P 2 0 1 5 / 2 01 6

APS

• Object Oriented Design

• Berorientasi pada objek / data

• Booch (1994), Meyer (1988), Jacobson et all (1993), dll.

OOA, OOD, OOP

T E K N I K I N FO R M AT I K A F I L KO M U B

S E M E S T E R G E N A P 2 0 1 5 / 2 01 6

APS

• Object-oriented analysis, design and programming are

related but distinct

• OOA is concerned with developing an object model of the

application domain

• OOD is concerned with developing an object-oriented

system model to implement requirements

• OOP is concerned with realising an OOD using an OO

programming language such as Java or C++

KONSEP

T E K N I K I N FO R M AT I K A F I L KO M U B

S E M E S T E R G E N A P 2 0 1 5 / 2 01 6

APS

• Metode untuk melakukan dekomposisi arsitektur sistemberdasarkan objek-objek yang dimanipulasi oleh sistemyang sedang dibangun

• Identifikasi dan mendefinisikan klas-klas tambahan ygmerefleksikan implementasi dari kebutuhan-kebutuhanhasil analisis

• Notasi = OOA

• Proses

• Perancangan sistem : struktur klas, user interface, data management

• Perancangan objek : atribut/struktur data, algoritmaoperasi

STRUKTUR KLAS

T E K N I K I N FO R M AT I K A F I L KO M U B

S E M E S T E R G E N A P 2 0 1 5 / 2 01 6

APS

• Gunakan klas-klas hasil analisis dan tambahkan sesuai

dengan kebutuhan perancangan

• Reuse jika memungkinkan

• packaging : pengelompokan klas-klas yg sesuai

PACKAGE DIAGRAM

T E K N I K I N FO R M AT I K A F I L KO M U B

S E M E S T E R G E N A P 2 0 1 5 / 2 01 6

APS

MENEMUKAN KLAS

T E K N I K I N FO R M AT I K A F I L KO M U B

S E M E S T E R G E N A P 2 0 1 5 / 2 01 6

APS

• Identifying object classes is often a difficult part of object oriented design

• There is no 'magic formula' for object identification. It relies on the skill, experience and domain knowledge of system designers.

• Object identification is an iterative process. You are unlikely to get it right first time.

• Use domain analysis as before

• Use a grammatical approach based on a natural language description of the system

• Base the identification on tangible things in the application domain

MENEMUKAN KLAS

T E K N I K I N FO R M AT I K A F I L KO M U B

S E M E S T E R G E N A P 2 0 1 5 / 2 01 6

APS

• Hint

• Derive them from the use cases (descriptions/scenarios)

• Look for data which must be stored or analysed

• Are there external systems?

• Are there any devices under the control of the system?

• Are there any organisational parts?

PERANCANGAN OBJEK

T E K N I K I N FO R M AT I K A F I L KO M U B

S E M E S T E R G E N A P 2 0 1 5 / 2 01 6

APS

• Attributes

• Describe the state and characteristics of the object

• Must be typed : primitive or class

• Only name and type are mandatory

• Operations

• Operations manipulate attributes and perform other

tasks

• Scope is the class

• Operation signature is composed of name, parameters

and return type

PERANCANGAN OBJEK

T E K N I K I N FO R M AT I K A F I L KO M U B

S E M E S T E R G E N A P 2 0 1 5 / 2 01 6

APS

• Sifat akses atribut dan operasi/service :

• private (klas/objek ybs.)

• protected (klas/objek ybs. dan turunannya)

• public (semua klas/objek)

• Algoritma operasi untuk implementasi spesifikasi dari

setiap operasi

• operasi manipulasi data (set, delete, get, dll.)

• operasi komputasi

• operasi pengontrolan

OPERASI - POLIMORFISME

T E K N I K I N FO R M AT I K A F I L KO M U B

S E M E S T E R G E N A P 2 0 1 5 / 2 01 6

APS

• Polymorphism means many (poly) shapes (morph)• private (klas/objek ybs.)• protected (klas/objek ybs. dan turunannya)• public (semua klas/objek)

• There are two kinds of polymorphism

• Polymorphism means many (poly) shapes (morph)• Overloading• Two or more methods with different signatures with the

same name• They essentially do the same thing, e.g. class constructors

• Overriding• Replacing an inherited method class with another having

the same signature (no matter with different parameter’s name)

• Do different thing using the same method’s signature

PENUTUP

T E K N I K I N FO R M AT I K A F I L KO M U B

S E M E S T E R G E N A P 2 0 1 5 / 2 01 6

APS

• Pemodelan perancangan dilakukan berdasarkan hasil

pemodelan analisis kebutuhan (RE modeling)

• Transform dan transaction mapping digunakan untuk

membangun arsitektur PL berdasarkan DFD

• OOD dilakukan berdasarkan hasil OOA dengan perluasan

klas jika diperlukan untuk keperluan implementasi

TERIMAKASIH V^^

To Infinity

and Beyond !

APS