j-didi

import java.time.LocalDate

//Domain entity, command an result from CQRS
data class Person(val id: Int, val name: String, val createdAt: LocalDate, val updateAt: LocalDate)
data class PersonCommand(val name: String)
data class PersonResult(val id: Int, val name: String)

//Repository, Logger and Mapper abstractions
interface Repository<T> { fun insert(entity: T) : T }

j-didi

import java.security.InvalidParameterException
import java.util.regex.Matcher
import java.util.regex.Pattern
import kotlin.properties.ReadOnlyProperty
import kotlin.reflect.KProperty

//Domain entities with E-mail property
class Client(email: String) {
    val email: String by EmailDelegated(email)
}

j-didi

import java.time.LocalDateTime
import java.util.UUID.randomUUID

abstract class EntityBase {
    lateinit var id: String
    lateinit var createAt: LocalDateTime
    lateinit var lastUpdateAt: LocalDateTime
}

class Person(val name: String) : EntityBase()

j-didi

import com.google.gson.GsonBuilder
import kotlin.reflect.KMutableProperty
import kotlin.reflect.full.memberProperties

//Enum and properties to better infix semantic
private const val Terminal = 0
enum class LogTarget(val value: Int) {

    TERMINAL(0);

j-didi

// Colleague only exposes Notify method
// SetMediator and HandleNotification are private and protected to simplify client interface
// Not public methods are invoked using reflection.

public abstract class Colleague
{
    private IMediator _mediator;


    protected void SetMediator(IMediator mediator)