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| (Une version intermédiaire par le même utilisateur non affichée) | |||
| Ligne 8 : | Ligne 8 : | ||
= Exemple = | = Exemple = | ||
<filebox fn='User.cs'> | |||
public class User | |||
{ | |||
public string Name { get; private set; } | |||
public User(string name) | |||
{ | |||
Name = name; | |||
} | |||
} | |||
</filebox> | |||
<filebox fn='Group.cs'> | |||
public class Group | |||
{ | |||
public string Name { get; private set; } | |||
public ICollection<User> Users { get; private set; } | |||
public Group(string name) | |||
{ | |||
Name = name; | |||
Users = new List<User>(); | |||
} | |||
} | |||
</filebox> | |||
<filebox fn='UserService.cs'> | |||
public class UserService | |||
{ | |||
public User CreateUser(string userName) => new User(userName); | |||
} | |||
</filebox> | |||
<filebox fn='GroupService.cs'> | |||
public class GroupService | |||
{ | |||
IDictionary<string, Group> groupsByName; | |||
public void AddUserIntoGroup(User user, Group group) | |||
{ | |||
group.Users.Add(user); | |||
} | |||
public Group GetByName(string groupName) | |||
=> groupsByName.TryGetValue(groupName, out var group) ? group : null; | |||
} | |||
</filebox> | |||
<filebox fn='UserGroupFacade.cs'> | |||
public class UserGroupFacade | |||
{ | |||
UserService userService; | |||
GroupService groupService; | |||
public UserGroupFacade(UserService userService, GroupService groupService) | |||
{ | |||
this.userService = userService; | |||
this.groupService = groupService; | |||
} | |||
public void CreateAdminUser(string userName) | |||
{ | |||
var user = userService.CreateUser(userName); | |||
var adminGroup = groupService.GetByName("Admin"); | |||
groupService.AddUserIntoGroup(user, adminGroup); | |||
} | |||
} | |||
</filebox> | |||
<kode lang='cs'> | |||
var userService = new UserService(); | |||
var groupService = new GroupService(); | |||
var userGroupFacade = new UserGroupFacade(userService, groupService); | |||
// create an admin user in 1 call instead of havind to call UserService.CreateUser + GroupService.GetByName + GroupService.AddUserIntoGroup | |||
userGroupFacade.CreateAdminUser("Nicolas"); | |||
</kode> | |||
Dernière version du 7 juin 2020 à 22:45
Definition
Provide a unified interface to a set of interfaces in a subsystem.
Facade defines a higher-level interface that makes the subsystem easier to use.
- Reorganize a system with many subsystems into identifiable layers with single entry points
- Simplify the interface to a complex subsystem
Exemple
| User.cs |
public class User
{
public string Name { get; private set; }
public User(string name)
{
Name = name;
}
}
|
| Group.cs |
public class Group
{
public string Name { get; private set; }
public ICollection<User> Users { get; private set; }
public Group(string name)
{
Name = name;
Users = new List<User>();
}
}
|
| UserService.cs |
public class UserService
{
public User CreateUser(string userName) => new User(userName);
}
|
| GroupService.cs |
public class GroupService
{
IDictionary<string, Group> groupsByName;
public void AddUserIntoGroup(User user, Group group)
{
group.Users.Add(user);
}
public Group GetByName(string groupName)
=> groupsByName.TryGetValue(groupName, out var group) ? group : null;
}
|
| UserGroupFacade.cs |
public class UserGroupFacade
{
UserService userService;
GroupService groupService;
public UserGroupFacade(UserService userService, GroupService groupService)
{
this.userService = userService;
this.groupService = groupService;
}
public void CreateAdminUser(string userName)
{
var user = userService.CreateUser(userName);
var adminGroup = groupService.GetByName("Admin");
groupService.AddUserIntoGroup(user, adminGroup);
}
}
|
|
var userService = new UserService();
var groupService = new GroupService();
var userGroupFacade = new UserGroupFacade(userService, groupService);
// create an admin user in 1 call instead of havind to call UserService.CreateUser + GroupService.GetByName + GroupService.AddUserIntoGroup
userGroupFacade.CreateAdminUser("Nicolas");
|
