/// <summary>
/// Summary description for Employee.
/// Visitor Pattern 访问者模式
///20220918
/// geovindu,Geovin Du,涂聚文
/// </summary>
public class Employee
{
int sickDays, vacDays;
float salary;
string name;
/// <summary>
///
/// </summary>
/// <param name="name"></param>
/// <param name="salary"></param>
/// <param name="vDays"></param>
/// <param name="sDays"></param>
public Employee(string name, float salary, int vDays, int sDays)
{
this.name = name;
this.salary = salary;
sickDays = sDays;
vacDays = vDays;
}
/// <summary>
///
/// </summary>
public string Name
{
get { return name; }
set { name = value; }
}
/// <summary>
///
/// </summary>
public float Salary
{
get { return salary; }
set { salary = value; }
}
/// <summary>
///
/// </summary>
public int SickDays
{
get { return sickDays; }
set { sickDays = value; }
}
/// <summary>
///
/// </summary>
public int VacDays
{
get { return vacDays; }
set { vacDays = value; }
}
/// <summary>
///
/// </summary>
/// <returns></returns>
public string getName()
{
return name;
}
/// <summary>
///
/// </summary>
/// <returns></returns>
public int getSickDays()
{
return sickDays;
}
/// <summary>
///
/// </summary>
/// <returns></returns>
public int getVacDays()
{
return vacDays;
}
/// <summary>
///
/// </summary>
/// <returns></returns>
public float getSalary()
{
return salary;
}
/// <summary>
///
/// </summary>
/// <param name="v"></param>
public virtual void accept(Visitor v)
{
v.visit(this);
}
/// <summary>
///
/// </summary>
/// <returns></returns>
public string toString()
{
return name + "," + salary.ToString() + "," + sickDays.ToString() + "," + vacDays.ToString() + "";
}
}
/// <summary>
/// Summary description for Visitor.
/// Visitor Pattern 访问者模式
///20220918
/// geovindu,Geovin Du,涂聚文
/// </summary>
public abstract class Visitor
{
/// <summary>
///
/// </summary>
/// <param name="emp"></param>
public abstract void visit(Employee emp);
/// <summary>
///
/// </summary>
/// <param name="bos"></param>
public abstract void visit(Boss bos);
}
/// <summary>
/// Summary description for Manager.\
/// Visitor Pattern 访问者模式
///20220918
/// geovindu,Geovin Du,涂聚文
/// </summary>
public class Manager : Employee
{
private int bonusDays;
/// <summary>
///
/// </summary>
/// <param name="nm"></param>
/// <param name="slry"></param>
/// <param name="vDays"></param>
/// <param name="sDays"></param>
public Manager(string nm, float slry, int vDays, int sDays) :
base(nm, slry, vDays, sDays)
{
}
/// <summary>
///
/// </summary>
/// <param name="bd"></param>
public void setBonusDays(int bd)
{
bonusDays = bd;
}
/// <summary>
///
/// </summary>
/// <returns></returns>
public int getBonusDays()
{
return bonusDays;
}
/// <summary>
///
/// </summary>
/// <param name="v"></param>
public override void accept(Visitor v)
{
v.visit(this);
}
}
/// <summary>
/// Summary description for Boss.
/// Visitor Pattern 访问者模式
///20220918
/// geovindu,Geovin Du,涂聚文
/// </summary>
public class Boss : Employee
{
private int bonusDays;
/// <summary>
///
/// </summary>
/// <param name="name"></param>
/// <param name="salary"></param>
/// <param name="vdays"></param>
/// <param name="sdays"></param>
public Boss(string name, float salary, int vdays, int sdays)
: base(name, salary, vdays, sdays)
{ }
/// <summary>
///
/// </summary>
/// <param name="bdays"></param>
public void setBonusDays(int bdays)
{
bonusDays = bdays;
}
/// <summary>
///
/// </summary>
/// <returns></returns>
public int getBonusDays()
{
return bonusDays;
}
/// <summary>
///
/// </summary>
/// <param name="v"></param>
public override void accept(Visitor v)
{
v.visit(this);
}
}
/// <summary>
/// Summary description for VacationVisitor.
/// Visitor Pattern 访问者模式
///20220918
/// geovindu,Geovin Du,涂聚文
/// </summary>
public class VacationVisitor : Visitor
{
private int totalDays;
/// <summary>
///
/// </summary>
public VacationVisitor()
{
totalDays = 0;
}
/// <summary>
///
/// </summary>
/// <returns></returns>
public int getTotalDays()
{
return totalDays;
}
/// <summary>
///
/// </summary>
/// <param name="emp"></param>
public override void visit(Employee emp)
{
totalDays += emp.getVacDays();
}
/// <summary>
///
/// </summary>
/// <param name="bos"></param>
public override void visit(Boss bos)
{
totalDays += bos.getVacDays();
}
}
调用：
/// <summary>
/// Visitor Pattern 访问者模式
///20220918
/// geovindu,Geovin Du,涂聚文
/// </summary>
public partial class VisitorPatternForm : Form
{
private List<Employee> empls;
private Employee empl;
private Boss bos;
/// <summary>
///
/// </summary>
private void init()
{
int i = 0;
empls = new List<Employee>();
empl = new Employee("Susan Bear", 55000, 12, 1);
empls.Add(empl);
empl = new Employee("Adam Gehr", 150000, 9, 0);
empls.Add(empl);
empl = new Employee("Fred Harris", 50000, 15, 2);
empls.Add(empl);
empl = new Employee("David Oakley", 57000, 12, 2);
empls.Add(empl);
empl = new Employee("Larry Thomas", 100000, 20, 6);
empls.Add(empl);
bos = new Boss("Leslie Susi", 175000, 16, 4);
empls.Add(empl);
bos.setBonusDays(12);
empls.Add(bos);
bos = new Boss("Laurence Byerly", 35000, 17, 6);
bos.setBonusDays(17);
empls.Add(bos);
}
/// <summary>
///
/// </summary>
public VisitorPatternForm()
{
InitializeComponent();
init();
}
/// <summary>
///
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void VisitorPatternForm_Load(object sender, EventArgs e)
{
this.dataGridView1.DataSource = empls;
}
/// <summary>
///
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void btCompute_Click(object sender, EventArgs e)
{
VacationVisitor vac = new VacationVisitor();
VacationVisitor bvac = new VacationVisitor();
for (int i = 0; i < empls.Count; i++)
{
empls[i].accept(vac); //get the employee
empls[i].accept(bvac);
}
lsVac.Items.Add("Total vacation days=" + vac.getTotalDays().ToString());
lsVac.Items.Add("Total boss vacation days=" + bvac.getTotalDays().ToString());
this.dataGridView1.DataSource = empls;
}
}
输出：
