This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
class Report( | |
val women: List<Person>, | |
val men: List<Person> | |
) { | |
fun isEmpty(): Boolean { | |
return women.isEmpty() && men.isEmpty() | |
} | |
} | |
abstract class ReportGenerator( | |
private val repository: Repository | |
) { | |
fun create(): Report { | |
val people = repository.fetchAllPeople() | |
val rawReport = splitByGender(people) | |
if (rawReport.isEmpty()) { | |
return rawReport | |
} | |
val filteredReport = filter(rawReport) | |
return sortByName(filteredReport) | |
} | |
abstract fun filter(report: Report): Report | |
// ... | |
} | |
class AdultsReportGenerator(repository: Repository) : ReportGenerator(repository) { | |
override fun filter(report: Report): Report { | |
val over21 = { person: Person -> person.age > 21 } | |
return Report( | |
report.women.filter(over21), | |
report.men.filter(over21) | |
) | |
} | |
} | |
// example: | |
val generator = AdultsReportGenerator(repository) | |
val reportWithPeopleOver21 = generator.create() |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment