Technology Stacks

Back end

• Ubuntu Linux OS
• Apache HTTP server configured as reverse proxy
• JRE 8
• Apache Tomcat Java application server
• Web service application, incorporating:
  • Data model
    • Embedded Apache Derby database
    • Hibernate ORM
    • Custom entity classes
    • Spring Data JPA
    • Custom data repository interfaces
  • Service controllers
    • Spring MVC
    • Custom controller classes
  • View composition & serialization
    • Jackson JSON
  • Authentication
    • Spring Security
    • Google Sign In (external service; see https://developers.google.com/identity)
    • Custom authentication verifier method for audience (client ID)

Front end

• Android OS
• Data model
  • SQLite
  • Room ORM
  • Custom entity and other model classes
  • Data access object (DAO) interfaces
• Remote service interfaces
  • Retrofit
  • ReactiveX
  • Gson
• Viewmodel components
  • Android Lifecycle framework (ViewModel & LiveData)
  • Custom viewmodel classes
• View
  • Custom RecyclerView.Adapter and RecyclerView.Holder classes
  • Custom layouts
• Controller
  • Custom activity and fragment classes
• Authentication
  • Google Sign In (external service; see https://developers.google.com/identity)
  • Custom sign in service class
• Formatting and UI
  • Custom images

Javadocs

• Client
• Server