Matakuliah : M0126 - Analisis dan Perancangan Sistem
Informasi Lanjut
Tahun
: 2009 - 2010
FUNCTION COMPONENT
Pertemuan 17-18
Learning Outcomes
Pada akhir pertemuan ini, diharapkan mahasiswa
akan mampu :
• Mahasiswa dapat membuat diagram / skema model
component (C4)
Outline Materi
• Mahasiswa dapat membuat diagram / skema component
architecture class
13 – 14 / 02 - 15
Function Component
Purpose
To determine the implementation of functions
Concepts


Function Component : A part of a system that implements functional
requirements
Operation : A process property specified in a
class and activated through the class’ objects
13 – 14 / 03 - 15
Function Component (Cont’d)
Principles


Base the design on function types
Specify complex operations
Result
A class diagram with operations and
specifications of complex operations
13 – 14 / 04 - 15
Sub-Activities in Function-Component Design
Function list, class diagram
Function
list, class
diagram
And
component
specification
And component specification
Design function
As operation
Model-component
Model-component
specification
specification
Explore
pattern
Specify complex
operations
Function-component
Function-component
specification
specification
Class Diagram with Operations on Classes
<<Component>>
<<Component>>
Model
Model
<<component>>
<<component>>
Function
Function
13 – 14 / 05 - 15
13 – 14 / 06 - 15
Central Questions in a Design Based on Function Types
Function Type
Central Questions
Common to all types How should the function be implemented as
operations in different classes?
How is the main operation activated and what
input data does it use?
Which objects and connections are involved
in performing the operations, and how are
they identified?
What is the feedback from the main operation?
Update
How can you determine if the update is legal?
Read
Which attributes and connections should be
read, and how are these found?
Compute
Which algorithm should be carried out?
Signal
Which rules apply to the signaling?
13 – 14 / 07 - 15
Update
A General Update function realized as a set of operations
Read
13 – 14 / 08 - 15
A General Read function realized as a set of operations
Compute
A General Compute function realized as a set of operations
13 – 14 / 09 - 15
Signal
A General Signal function realized as a set of operations
13 – 14 / 10 - 15
13 – 14 / 11 - 15
Explore Pattern


Model-Class Placement
This pattern is particularly useful when an operation accesses only a single object
or simple aggregate structure
Function-Class Placement
This pattern is used when responsibility for the operation cannot be clearly
placed in a model class
13 – 14 / 12 - 15
An Example of the Model-Class Placement Pattern
13 – 14 / 13 - 15
An Example of Function-Class Placement
<<component>>
<<component
ModelModel
a
account
<<component>>
<<component>>
Function
Function
Interest Administrator
Control Interest Calculation
Control Interest Calculation
Transaction
Transaction
AccountType
Type
Account
13 – 14 / 14 - 15
Strategy
A generic illustration of the strategy Pattern
13 – 14 / 15 - 15
Active Function
Active
Model
The Active-Function Pattern Illustration