0c83ccc2fe
Its better to use enums instead of switch blocks which makes the code longer and difficult to maintain as and when new state appears.
83 lines
2.2 KiB
Plaintext
83 lines
2.2 KiB
Plaintext
@startuml
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package com.iluwatar.observer {
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class App {
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- LOGGER : Logger {static}
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+ App()
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+ main(args : String[]) {static}
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}
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class Hobbits {
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- LOGGER : Logger {static}
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+ Hobbits()
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+ update(currentWeather : WeatherType)
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}
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class Orcs {
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- LOGGER : Logger {static}
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+ Orcs()
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+ update(currentWeather : WeatherType)
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}
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class Weather {
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- LOGGER : Logger {static}
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- currentWeather : WeatherType
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- observers : List<WeatherObserver>
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+ Weather()
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+ addObserver(obs : WeatherObserver)
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- notifyObservers()
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+ removeObserver(obs : WeatherObserver)
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+ timePasses()
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}
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interface WeatherObserver {
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+ update(WeatherType) {abstract}
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}
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enum WeatherType {
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+ COLD {static}
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+ RAINY {static}
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+ SUNNY {static}
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+ WINDY {static}
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+ description String
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+ toString() : String
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+ getDescription() : String
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+ valueOf(name : String) : WeatherType {static}
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+ values() : WeatherType[] {static}
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}
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}
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package com.iluwatar.observer.generic {
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class GHobbits {
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- LOGGER : Logger {static}
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+ GHobbits()
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+ update(weather : GWeather, weatherType : WeatherType)
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}
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class GOrcs {
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- LOGGER : Logger {static}
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+ GOrcs()
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+ update(weather : GWeather, weatherType : WeatherType)
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}
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class GWeather {
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- LOGGER : Logger {static}
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- currentWeather : WeatherType
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+ GWeather()
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+ timePasses()
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}
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abstract class Observable<S extends Observable, O extends Observer<S, O, A>, A> {
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# observers : List<O extends Observer<S, O, A>>
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+ Observable<S extends Observable, O extends Observer<S, O, A>, A>()
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+ addObserver(observer : O extends Observer<S, O, A>)
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+ notifyObservers(argument : A)
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+ removeObserver(observer : O extends Observer<S, O, A>)
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}
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interface Observer<S extends Observable<S, O, A>, O extends Observer, A> {
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+ update(S extends Observable<S, O, A>, A) {abstract}
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}
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interface Race {
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}
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}
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Weather --> "-currentWeather" WeatherType
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GWeather --> "-currentWeather" WeatherType
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Weather --> "-observers" WeatherObserver
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Hobbits ..|> WeatherObserver
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Orcs ..|> WeatherObserver
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GHobbits ..|> Race
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GOrcs ..|> Race
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GWeather --|> Observable
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Race --|> Observer
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@enduml
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