設計模式--抽象工廠模式
抽象工廠用例圖
代碼
class Program
{
static void Main(string[] args)
{
User user = new User();
Department dept = new Department();
IUser iu = DataAccess.CreateUser();
iu.Insert(user);
iu.GetUser(1);
IDepartment id = DataAccess.CreateDepartment();
id.Insert(dept);
id.GetDepartment(1);
Console.Read();
}
}
class User
{
private int _id;
public int ID
{
get { return _id; }
set { _id = value; }
}
private string _name;
public string Name
{
get { return _name; }
set { _name = value; }
}
}
class Department
{
private int _id;
public int ID
{
get { return _id; }
set { _id = value; }
}
private string _deptName;
public string DeptName
{
get { return _deptName; }
set { _deptName = value; }
}
}
interface IUser
{
void Insert(User user);
User GetUser(int id);
}
class SqlserverUser : IUser
{
public void Insert(User user)
{
Console.WriteLine("在Sqlserver中给User表增加一条记录");
}
public User GetUser(int id)
{
Console.WriteLine("在Sqlserver中根据ID得到User表一条记录");
return null;
}
}
class AccessUser : IUser
{
public void Insert(User user)
{
Console.WriteLine("在Access中给User表增加一条记录");
}
public User GetUser(int id)
{
Console.WriteLine("在Access中根据ID得到User表一条记录");
return null;
}
}
interface IDepartment
{
void Insert(Department department);
Department GetDepartment(int id);
}
class SqlserverDepartment : IDepartment
{
public void Insert(Department department)
{
Console.WriteLine("在Sqlserver中给Department表增加一条记录");
}
public Department GetDepartment(int id)
{
Console.WriteLine("在Sqlserver中根据ID得到Department表一条记录");
return null;
}
}
class AccessDepartment : IDepartment
{
public void Insert(Department department)
{
Console.WriteLine("在Access中给Department表增加一条记录");
}
public Department GetDepartment(int id)
{
Console.WriteLine("在Access中根据ID得到Department表一条记录");
return null;
}
}
class DataAccess
{
private static readonly string AssemblyName = "抽象工厂模式";
private static readonly string db = ConfigurationManager.AppSettings["DB"];
public static IUser CreateUser()
{
string className = AssemblyName + "." + db + "User";
return (IUser)Assembly.Load(AssemblyName).CreateInstance(className);
}
public static IDepartment CreateDepartment()
{
string className = AssemblyName + "." + db + "Department";
return (IDepartment)Assembly.Load(AssemblyName).CreateInstance(className);
}
}
運行效果