Object Oriented Analysis

FROM: HAFIZ AMMAR SIDDIQUI COURSE: OBJECT ORIENTED SOFTWARE ENGINEERING INSTITUTE: BEACONHOUSE NATIONAL UNIVERSITY

Static Models

FROM: HAFIZ AMMAR SIDDIQUI COURSE: OBJECT ORIENTED SOFTWARE ENGINEERING INSTITUTE: BEACONHOUSE NATIONAL UNIVERSITY

Static Models Represents the static elements of a system

Explains the structural organization of a system

Describes the static structure of objects that exist in the problem domain

Time independent view of system

Static modelling includes Use case diagram Class diagram Object diagram Component diagram Deployment diagram

FROM: HAFIZ AMMAR SIDDIQUI COURSE: OBJECT ORIENTED SOFTWARE ENGINEERING INSTITUTE: BEACONHOUSE NATIONAL UNIVERSITY

Static Models (Object Model)

FROM: HAFIZ AMMAR SIDDIQUI COURSE: OBJECT ORIENTED SOFTWARE ENGINEERING INSTITUTE: BEACONHOUSE NATIONAL UNIVERSITY

Object Model System is modelled using object oriented techniques

Classified into different stages1. Analysis object model2. System design object model3. Object design model

FROM: HAFIZ AMMAR SIDDIQUI COURSE: OBJECT ORIENTED SOFTWARE ENGINEERING INSTITUTE: BEACONHOUSE NATIONAL UNIVERSITY

Static Models (Class Diagram)

FROM: HAFIZ AMMAR SIDDIQUI COURSE: OBJECT ORIENTED SOFTWARE ENGINEERING INSTITUTE: BEACONHOUSE NATIONAL UNIVERSITY

Class Diagram Class diagram is a static model diagram which is modelled using the UML (Unified

Modeling Language)

Show classes which are abstractions that specify the common structure, attributesand behaviors of a set of objects

Describes the structure of a system by using classes and objects, and therelationships among them

Used from data modeling of a specific domain to a detailed design of the system

FROM: HAFIZ AMMAR SIDDIQUI COURSE: OBJECT ORIENTED SOFTWARE ENGINEERING INSTITUTE: BEACONHOUSE NATIONAL UNIVERSITY

Object Modelling using UML

FROM: HAFIZ AMMAR SIDDIQUI COURSE: OBJECT ORIENTED SOFTWARE ENGINEERING INSTITUTE: BEACONHOUSE NATIONAL UNIVERSITY

Object Modelling using UML Object modelling technique An object modeling approach for software modeling and designing Method for analysis, design and implementation using object oriented principles

UML (Unified Modeling Language) An industry standard modeling language with a rich graphical notation, andcomprehensive set of diagrams and elements

A modeling language use to specify, design and develop the document artifacts of asoftware system

Used to analyze, design and implement a system using the methods of objectoriented software engineering

Combine different approaches in a single design language

FROM: HAFIZ AMMAR SIDDIQUI COURSE: OBJECT ORIENTED SOFTWARE ENGINEERING INSTITUTE: BEACONHOUSE NATIONAL UNIVERSITY

The process of developing class diagram

FROM: HAFIZ AMMAR SIDDIQUI COURSE: OBJECT ORIENTED SOFTWARE ENGINEERING INSTITUTE: BEACONHOUSE NATIONAL UNIVERSITY

The process of developing class diagram Steps of developing a class diagram1. Identify set of classes2. Define relationships between classes3. Add attributes and behaviors4. Iterate over the process again till class diagram is satisfactory

FROM: HAFIZ AMMAR SIDDIQUI COURSE: OBJECT ORIENTED SOFTWARE ENGINEERING INSTITUTE: BEACONHOUSE NATIONAL UNIVERSITY

Class Diagram UML (Class) Class is represented with a box that contain three compartments, top compartment

contains the name of a class, the middle compartment contain the attributes of aclass, and lower compartment contain the behaviors of a class

FROM: HAFIZ AMMAR SIDDIQUI COURSE: OBJECT ORIENTED SOFTWARE ENGINEERING INSTITUTE: BEACONHOUSE NATIONAL UNIVERSITY

Class_Name

visibility attribute_name : data_type

visibility behavior_name (input_parameter : data_type) : return_type

Class Diagram UML (Association) Association relation is represented by a line from one class to another class and its

multiplicity is represented by a numerical range at the both ends of a line

FROM: HAFIZ AMMAR SIDDIQUI COURSE: OBJECT ORIENTED SOFTWARE ENGINEERING INSTITUTE: BEACONHOUSE NATIONAL UNIVERSITY

Class_Name

Class_Name

min_no max_no(* for Infinite)

min_no max_no(* for Infinite)

Class Diagram UML (Aggregation) Aggregation relation is represented by hollow diamond shape on the containing

class with a single line that connects it to the contained class and its multiplicity isrepresented by a numerical range at the both ends of a line

FROM: HAFIZ AMMAR SIDDIQUI COURSE: OBJECT ORIENTED SOFTWARE ENGINEERING INSTITUTE: BEACONHOUSE NATIONAL UNIVERSITY

Class_Name

Class_Name

min_no max_no(* for Infinite)

min_no max_no(* for Infinite)

Class Diagram UML (Composition) Composition relation is represented by filled diamond shape on the containing class

with a single line that connects it to the contained class and its multiplicity isrepresented by a numerical range at the both ends of a line

FROM: HAFIZ AMMAR SIDDIQUI COURSE: OBJECT ORIENTED SOFTWARE ENGINEERING INSTITUTE: BEACONHOUSE NATIONAL UNIVERSITY

Class_Name

Class_Name

min_no max_no(* for Infinite)

min_no max_no(* for Infinite)

Class Diagram UML (Inheritance) Inheritance relation is represented by hollow triangle shape on the base class end of

the line that connects it to the derived class

FROM: HAFIZ AMMAR SIDDIQUI COURSE: OBJECT ORIENTED SOFTWARE ENGINEERING INSTITUTE: BEACONHOUSE NATIONAL UNIVERSITY

Class_Name

Class_Name

Dynamic Models

FROM: HAFIZ AMMAR SIDDIQUI COURSE: OBJECT ORIENTED SOFTWARE ENGINEERING INSTITUTE: BEACONHOUSE NATIONAL UNIVERSITY

Dynamic Models Represents the dynamic elements of a system

Explains the behavior of a system

Shows the order of events and messages that occur in a system

Describes the interaction among objects and flow of information

Time dependent view of system

Dynamic modelling includes Interaction diagram Sequence diagram State machine diagram Activity diagram

FROM: HAFIZ AMMAR SIDDIQUI COURSE: OBJECT ORIENTED SOFTWARE ENGINEERING INSTITUTE: BEACONHOUSE NATIONAL UNIVERSITY

Dynamic Models (Sequence Diagram)

FROM: HAFIZ AMMAR SIDDIQUI COURSE: OBJECT ORIENTED SOFTWARE ENGINEERING INSTITUTE: BEACONHOUSE NATIONAL UNIVERSITY

Sequence Diagram Sequence diagram is a dynamic model diagram which is modelled using the UML

(Unified Modeling Language)

Describes the objects participating in a use case

Explains that how different parts of a system interact with each other to carry out aspecific task

Shows the dynamic behavior of interacting objects

Explains that how objects communicate with one another and in which order

Shows the messaging between objects arranged in a time sequence

Models the collaboration of different objects with respect to time

FROM: HAFIZ AMMAR SIDDIQUI COURSE: OBJECT ORIENTED SOFTWARE ENGINEERING INSTITUTE: BEACONHOUSE NATIONAL UNIVERSITY

Sequence Diagram UML Every participating object has its own lifeline which is represented by a vertical

dotted line drawn either under a rectangular box or human symbol (if object is actor)

If an object is destroyed, cross is drawn on bottom of the lifeline

Messages exchanged between objects are represented by horizontal arrows, in theorder in which they occur, synchronous messages with solid arrow heads andasynchronous messages with open arrow heads

Request or invocation messages are represented by solid lines and response orreturn messages are represented by dotted lines

Processes performed in response to messages are represented by activation boxes,which are opaque rectangles drawn on top of lifelines

Loops, alternative flows or reference to another sequence are represented inside alarge rectangle over the lifelines of related objects

FROM: HAFIZ AMMAR SIDDIQUI COURSE: OBJECT ORIENTED SOFTWARE ENGINEERING INSTITUTE: BEACONHOUSE NATIONAL UNIVERSITY

Sequence Diagram UML

FROM: HAFIZ AMMAR SIDDIQUI COURSE: OBJECT ORIENTED SOFTWARE ENGINEERING INSTITUTE: BEACONHOUSE NATIONAL UNIVERSITY

Object_Name

Actor_Name

Object_Name

X

Request_Msg_Sync Request_Msg_Create_Sync

Response_Msg

Request_Msg_Delete_Async

Request_Msg_Async

Self_Msg

Reference Object Oriented Software Engineering: Using UML, Patterns, and Java by Bernd

Bruegge, Allen H. Dutoit, Prentice Hall, 2010

FROM: HAFIZ AMMAR SIDDIQUI COURSE: OBJECT ORIENTED SOFTWARE ENGINEERING INSTITUTE: BEACONHOUSE NATIONAL UNIVERSITY