Design Pattern learning ----- abstract factory pattern

GOOD: defines an interface for creating a series of related or interdependent interfaces without specifying their specific classes.

Used to exchange product series, such as ACCESS-> SQLSERVER;

The specific Class Name of the product is separated by the implementation of the specific factory

 

[Html]
# Include <string>
# Include <iostream>
# Include <vector>
Using namespace std;
 
// User abstract interface
Class IUser
{
Public:
Virtual void GetUser () = 0;
Virtual void InsertUser () = 0;
};
 
// Department abstract interface
Class IDepartment
{
Public:
Virtual void GetDepartment () = 0;
Virtual void InsertDepartment () = 0;
};
 
// ACCESS user
Class CAccessUser: public IUser
{
Public:
Virtual void GetUser ()
{
Cout <"Access GetUser" <endl;
}
Virtual void InsertUser ()
{
Cout <"Access InsertUser" <endl;
}
};
 
// ACCESS Department
Class CAccessDepartment: public IDepartment
{
Public:
Virtual void GetDepartment ()
{
Cout <"Access GetDepartment" <endl;
}
Virtual void InsertDepartment ()
{
Cout <"Access InsertDepartment" <endl;
}
};
 
// SQL user
Class CSqlUser: public IUser
{
Public:
Virtual void GetUser ()
{
Cout <"SQL User" <endl;
}
Virtual void InsertUser ()
{
Cout <"SQL User" <endl;
}
};
 
// SQL Department
Class CSqlDepartment: public IDepartment
{
Public:
Virtual void GetDepartment ()
{
Cout <"SQL getDepartment" <endl;
}
Virtual void InsertDepartment ()
{
Cout <"SQL insertdepartment" <endl;
}
};
 
// Abstract Factory
Class ifacloud
{
Public:
Virtual IUser * CreateUser () = 0;
Virtual IDepartment * CreateDepartment () = 0;
};
 
// ACCESS Factory
Class AccessFactory: public ifacloud
{
Public:
Virtual IUser * CreateUser ()
{
Return new CAccessUser ();
}
Virtual IDepartment * CreateDepartment ()
{
Return new CAccessDepartment ();
}
};
 
// SQL Factory
Class SqlFactory: public ifacloud
{
Public:
Virtual IUser * CreateUser ()
{
Return new CSqlUser ();
}
 
Virtual IDepartment * CreateDepartment ()
{
Return new CSqlDepartment ();
}
};
 
// Client:
Int main ()
{
IFactory * factory = new SqlFactory ();
IUser * user = factory-> CreateUser ();
IDepartment * depart = factory-> CreateDepartment ();
User-> GetUser ();
Depart-> GetDepartment ();
Return 0;
}