public void VisitCompositeElement(CompositeEmployee employee)
{
//We'll promote them if experience is greater than 15 years
bool eligibleForPromotion = employee.Experience > 15 ? true : false;
Console.WriteLine("\t\t" + employee.Name + " from " + employee.Dept + " is eligible for promotion? " + eligibleForPromotion);
}
static void Main(string[] args)
{
Console.WriteLine("***Visitor Pattern combined with Composite Pattern Demo***\n");
#region Similar code structure taken from Composite Pattern demo
//Prinipal of the college
CompositeEmployee Principal = new CompositeEmployee("Dr.S.Som(Principal)", "Planning-Supervising-Managing", 20);
//The college has 2 Head of Departments-One from MAths, One from Computer Sc.
CompositeEmployee hodMaths = new CompositeEmployee("Mrs.S.Das(HOD-Maths)", "Maths", 14);
CompositeEmployee hodCompSc = new CompositeEmployee("Mr. V.Sarcar(HOD-CSE)", "Computer Sc.", 16);
//2 other teachers works in Mathematics department
Employee mathTeacher1 = new Employee("Math Teacher-1", "Maths", 14);
Employee mathTeacher2 = new Employee("Math Teacher-2", "Maths", 6);
//3 other teachers works in Computer Sc. department
Employee cseTeacher1 = new Employee("CSE Teacher-1", "Computer Sc.", 10);
Employee cseTeacher2 = new Employee("CSE Teacher-2", "Computer Sc.", 13);
Employee cseTeacher3 = new Employee("CSE Teacher-3", "Computer Sc.", 7);
//Teachers of Mathematics directly reports to HOD-Maths
hodMaths.Add(mathTeacher1);
hodMaths.Add(mathTeacher2);
//Teachers of Computer Sc directly reports to HOD-Comp.Sc
hodCompSc.Add(cseTeacher1);
hodCompSc.Add(cseTeacher2);
hodCompSc.Add(cseTeacher3);
//Principal is on top of college
//HOD -Maths and Comp. Sc directly reports to him
Principal.Add(hodMaths);
Principal.Add(hodCompSc);
Console.WriteLine("\n Testing the overall structure");
//Prints the complete structure
Principal.PrintStructures();
#endregion
Console.WriteLine("\n***Visitor starts visiting our composite structure***\n");
IVisitor aVisitor = new Visitor();
/*Principal is already holding the highest position.
* We are not checking whether he is eligible for promotion or not*/
//Principal.Accept(aVisitor);
//For employees who directly reports to Principal
foreach (IEmployee e in Principal.Controls)
{
e.Accept(aVisitor);
}
//For employees who directly reports to HOD-Maths
foreach (IEmployee e in hodMaths.Controls)
{
e.Accept(aVisitor);
}
//For employees who directly reports to HOD-Comp.Sc
foreach (IEmployee e in hodCompSc.Controls)
{
e.Accept(aVisitor);
}
Console.ReadLine();
}