About

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I simply implemented a simple book rental service to study hexagonal.

Domain

• User
  • Name
  • Age
  • Gender
  • Phone Number
• Book
  • Name
  • Author
  • Category
  • Publish Date
  • Quantity
• Rental
  • Start Date
  • End Date

E.R.D

• users
  • id
  • name
  • age
  • gender
  • phone
• books
  • name
  • author
  • category
  • publish_at
  • quantity
• rentals
  • id
  • user_id
  • book_id
  • start_at
  • end_at

UseCase

• Start Book Rental
• End Book Rental
• Find Book
  • by Rental Possibility
  • by Id (One)
  • by Author (Many)
  • by Name - like query(Many)
  • by Category (Many)
  • by Publish Date (Many)
    • Year query
    • Month query
    • Date query
  • by Quantity
• Find Rental
  • by Id (One)
  • by Book Name (Many)
  • by User Id (Many)

Try Out

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I try to keep adding things I want to try...

• [TEST] Package Dependency
  • use Java access modifier as much as possible.
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