« Bridge pattern » : différence entre les versions
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Aucun résumé des modifications |
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= Exemple = | = Exemple = | ||
* The {{boxx|*Logger}} classes can be modified without modifying the {{boxx|UserService}} as long as it follows the {{boxx|ILogger}} contract. | |||
<filebox fn='ILogger.cs'> | <filebox fn='ILogger.cs'> | ||
public interface ILogger | public interface ILogger |
Version du 6 juin 2020 à 22:25
Description
- Decouple an abstraction from its implementation so that the two can vary independently.
Exemple
- The *Logger classes can be modified without modifying the UserService as long as it follows the ILogger contract.
ILogger.cs |
public interface ILogger { void WriteLine(string text); } |
ConsoleLogger |
public class ConsoleLogger : ILogger { public void WriteLine(string text) { Console.WriteLine(text); } } |
IUserService.cs |
public interface IUserService { void ChangePassword(int userId, string newPassword); } |
UserService.cs |
public class UserService : IUserService { private ILogger logger; public UserService(ILogger logger) { this.logger = logger; } public void ChangePassword(int userId, string newPassword) { logger.WriteLine($"Password has been change for user {userId}."); } } |
IUserService userService = new UserService(new ConsoleLogger()); userService.ChangePassword(1, "0000"); |