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Component-Based Software Engineering & Software Reuse

Integration for THS-Enhanced Development

COIT20258 Software Engineering - Week 11

Assessment 3 Focus

Building THS-Enhanced using component-based architecture with reusable software elements

Component-Based Software Engineering (CBSE)

Definition

Software development approach relying on reuse of entities called "software components"

  • More abstract than object classes
  • Stand-alone service providers
  • Independent executable entities

Core Principles

  • Independent components
  • Hidden implementations
  • Well-defined interfaces
  • Component replaceability
  • Standard services

THS Application

THS-Enhanced will use components for: authentication, booking system, video conferencing, vital signs monitoring, prescription management

Software Reuse Landscape

Reuse Hierarchy

System Reuse
Complete applications
Application Reuse
Application families
Component Reuse
Subsystems to objects
Object/Function Reuse
Small-scale components

THS Reuse Strategy

Leverage existing JavaFX components, MySQL database patterns, and multi-threading frameworks for faster development

CBSE Development Processes

Development for Reuse
Creating generalizable components
→
Development with Reuse
Using existing components

Component Identification Process

Component Search
→
Component Selection
→
Component Validation

THS Process Application

Your team will search for existing medical booking components, select appropriate JavaFX controls, and validate video conferencing libraries

Combined Benefits: CBSE + Software Reuse

Accelerated Development
Faster time to market through component reuse
Increased Dependability
Tested components reduce system failures
Lower Development Costs
Fewer lines of code to write and test
Effective Specialist Use
Focus on domain-specific functionality
Standards Compliance
Consistent interfaces and behaviors
Reduced Process Risk
Known costs vs. uncertain development

THS Benefits

Your 20-minute development timeline benefits from reusing MySQL connectors, JavaFX scene builders, and video call APIs

Challenges and Mitigation Strategies

Challenge CBSE Solution Reuse Solution THS Application
Component Integration Standard interfaces Adapter patterns Use MVC/MVP architecture
Finding Components Component repositories Library management GitHub documentation
Maintenance Costs Component certification Source code access Version control with Git
Tool Support Middleware platforms IDE integration NetBeans project structure

CBSE + Reuse Architecture

3-Tier THS Architecture

Presentation Layer
JavaFX GUI Components
Business Logic Layer
Reusable Service Components
Data Layer
MySQL Database Components

Component Interfaces

  • Patient Management Interface
  • Booking Service Interface
  • Video Call Interface
  • Database Access Interface

Reusable Elements

  • Authentication modules
  • Date/time pickers
  • Form validation
  • Database connection pools

THS-Enhanced Component Strategy

Core Components

  • User Authentication Component
  • Appointment Scheduler Component
  • Video Conference Component
  • Vital Signs Monitor Component
  • Prescription Manager Component

Reusable Libraries

  • MySQL JDBC Driver
  • JavaFX Scene Builder controls
  • Date validation utilities
  • Encryption/security modules
  • Multi-threading frameworks

Implementation Guidelines

  • Design components with clear, minimal interfaces
  • Implement proper error handling and exception management
  • Use dependency injection for component coupling
  • Apply MVC/MVP patterns consistently

Integrated Development Process

Requirements Analysis
Identify reusable needs
→
Component Search
Find existing solutions
→
Architecture Design
Plan component integration
Component Development
Build missing components
→
Integration Testing
Validate component interaction
→
System Validation
End-to-end testing

THS Team Process

Assign team members to different components, use GitHub for version control, document interfaces clearly, test component integration regularly

Quality Assurance in Component-Based Systems

Component Testing

  • Unit testing for individual components
  • Interface testing for component boundaries
  • Integration testing for component interaction
  • System testing for end-to-end functionality

Reuse Validation

  • Component certification processes
  • Performance benchmarking
  • Security vulnerability assessment
  • Compatibility verification

THS Testing Requirements

Develop comprehensive test plan showing input data, expected results, and actual results. Document testing evidence through screenshots. Test multi-threaded server performance and database integrity.

Direct Application to Assessment 3

Required Deliverables Integration

Technical Requirements

  • Multi-threaded server (component-based design)
  • MySQL database (reusable data access patterns)
  • JavaFX GUI (reusable UI components)
  • MVC/MVP architecture (component separation)

Team Development

  • GitHub repository for component sharing
  • Task distribution by component ownership
  • Regular integration and testing
  • Documentation of component interfaces

Success Strategies

  • Select the best THS-Initial as foundation for component reuse
  • Design two new functionalities as independent, reusable components
  • Implement comprehensive testing for component validation
  • Document component interfaces in your group report

Key Takeaways for THS Development

Component Independence
Design THS components with minimal dependencies
Interface Clarity
Define clear contracts between THS modules
Reuse Strategy
Leverage existing libraries and frameworks
Integration Planning
Plan component composition carefully
Quality Focus
Test components individually and together
Team Coordination
Use component boundaries for task distribution

Remember for Assessment Success

Your THS-Enhanced project demonstrates both CBSE principles and software reuse benefits. Focus on clean component design, effective reuse of existing solutions, and thorough testing documentation.