public static void Execute()
{
ConsoleExtension.WriteSeparator("Person example");
var person = new Person();
person.Assets.Add(new BankAccount {
Amount = 1000, MonthlyInterest = 0.01
});
person.Assets.Add(new BankAccount {
Amount = 2000, MonthlyInterest = 0.02
});
person.Assets.Add(new RealEstate {
EstimatedValue = 77000, MonthlyRent = 500
});
person.Assets.Add(new Loan {
Owed = 40000, MonthlyPayment = 400
});
var netWorthVisitor = new NetWorthVisitor();
var incomeVisitor = new IncomeVisitor();
person.InspectAssets(netWorthVisitor);
Console.WriteLine($"Person's net worth is {netWorthVisitor.Total:C}");
person.InspectAssets(incomeVisitor);
Console.WriteLine($"Person's monthly income is {incomeVisitor.Amount:C}");
}
static void Main(string[] args)
{
// Object Structure
var person = new Person();
person.Assets.Add(new BankAccount {
Amount = 1000, MonthlyInterestRate = 0.01
});
person.Assets.Add(new BankAccount {
Amount = 2000, MonthlyInterestRate = 0.02
});
person.Assets.Add(new RealEstate {
EstimatedValue = 79000, MonthlyRent = 500
});
person.Assets.Add(new Loan {
Owed = 40000, MonthlyPayment = 40
});
// Visitor
var netWorthVisitor = new NetWorthVisitor();
person.Accept(netWorthVisitor);
var monthlyincome = new MonthlyIncome();
person.Accept(monthlyincome);
Console.WriteLine("Net Worth: {0}", netWorthVisitor.Total);
Console.WriteLine("Monthly Income: {0}", monthlyincome.Amount);
Console.ReadKey();
}
private static void CalculatePersonsNetWorthWithTheVisitorPattern()
{
var person = new visitorPatternEntities.Person();
person.Assets.Add(new visitorPatternEntities.BankAccount {
Amount = 1000, MonthlyInterest = 0.01m
});
person.Assets.Add(new visitorPatternEntities.BankAccount {
Amount = 2000, MonthlyInterest = 0.02m
});
person.Assets.Add(new visitorPatternEntities.RealEstate {
EstimatedValue = 79000, MonthlyRent = 500m
});
person.Assets.Add(new visitorPatternEntities.Loan {
Owed = 40000, MonthlyPayment = 40
});
//the logic is encapsulated into one place and the operations of now and in the future can be stored in one place.
//they are not scattered amongst the classes of now [BankAccount, Loan, RealEstate].
//In the future if new classes came on board and they need to contribute to the networth calculation. They would simple need to implement the IAsset interface.
var netWorthVisitor = new NetWorthVisitor();
var incomeVisitor = new IncomeVisitor();
person.Accept(netWorthVisitor);
person.Accept(incomeVisitor);
Console.WriteLine($"netWorthVisitor.Total {netWorthVisitor.Total}");
Console.WriteLine($"incomeVisitor.Amount {incomeVisitor.Amount}");
}
public void VisitorPatter_TestUseOfVisitor()
{
var person = new Person();
person.Assets.Add(new BankAccount {
Amount = 1000, MonthlyInterest = 0.01
});
person.Assets.Add(new BankAccount {
Amount = 2000, MonthlyInterest = 0.02
});
person.Assets.Add(new RealEstate {
EstimatedValue = 79000, MonthlyRent = 500
});
person.Assets.Add(new Loan {
Owed = 40000, MonthlyPayment = 40
});
var netWorthVisitor = new NetWorthVisitor();
var incomeVisitor = new IncomeVisitor();
person.Accept(netWorthVisitor);
person.Accept(incomeVisitor);
Console.WriteLine(netWorthVisitor.Total);
Console.WriteLine(incomeVisitor.Amount);
}
public void ShowSample()
{
var person = new Person();
person.Assets.Add(new BankAccount(100, 1.2));
person.Assets.Add(new BankAccount(30, 1.1));
person.Assets.Add(new BankAccount(80, 1.4));
person.Assets.Add(new Loan(80, 100));
person.Assets.Add(new RealEstate(8, 10));
var netWorthVisitor = new NetWorthVisitor();
person.Accept(netWorthVisitor);
var incomeVisitor = new IncomeVisitor();
person.Accept(incomeVisitor);
Console.WriteLine($"NetWorthVisitor got {netWorthVisitor.NetWorth}");
Console.WriteLine($"IncomeVisitor got {incomeVisitor.Income}");
}
public void Calculate_Net_Worth()
{
var person = new Person();
person.Assets.Add(new BankAccount {
Amount = 1000, InterestRate = 0.05m
});
person.Assets.Add(new BankAccount {
Amount = 2000, InterestRate = 0.1m
});
person.Assets.Add(new RealEstate {
EstimatedValue = 79000, MonthlyRent = 2000
});
person.Assets.Add(new Loan {
Owed = 40000, MonthlyPayment = 100
});
var netWorthVisitor = new NetWorthVisitor();
person.Accept(netWorthVisitor);
Assert.Equal(42000, netWorthVisitor.Total);
}
