private void CalculateDiscriminant(QuadraticEquationContext context)
{
double discriminant = Math.Pow(context.B, 2) - 4 * context.A * context.C;
context.Discriminant = discriminant;
Console.WriteLine("[{0}] Calculated discriminant = {1}", Thread.CurrentThread.ManagedThreadId, discriminant);
}
private void SameRoots(QuadraticEquationContext context)
{
double root = -context.B / 2 * context.A;
context.Root1 = root;
context.Root2 = root;
Console.WriteLine("[{0} Same roots: {1}", Thread.CurrentThread.ManagedThreadId, root);
}
public void Test(double a, double b, double c)
{
QuadraticEquationContext context = new QuadraticEquationContext(a, b, c);
IWorkflow <QuadraticEquationContext> workflow = new Workflow <QuadraticEquationContext>()
.Do(CalculateDiscriminant)
.If(RootsChecking,
new Workflow <QuadraticEquationContext>().If(IfSameRoots,
new Workflow <QuadraticEquationContext>().Do(SameRoots),
new Workflow <QuadraticEquationContext>().DoAsynch(CalculateRoot1, CalculateRoot2)),
new Workflow <QuadraticEquationContext>().Do(NoRoots)
)
.Do(obj => Console.WriteLine("[{0}] finish", Thread.CurrentThread.ManagedThreadId));
workflow.Start(context);
}
private void NoRoots(QuadraticEquationContext context)
{
context.ResultRootsNumber = 0;
Console.WriteLine("No Roots");
}
private bool RootsChecking(QuadraticEquationContext context)
{
return(context.Discriminant >= 0);
}
private bool IfSameRoots(QuadraticEquationContext context)
{
return(context.Discriminant == 0);
}
private void CalculateRoot2(QuadraticEquationContext context)
{
context.Root2 = (-context.B - Math.Sqrt(context.Discriminant)) / 2 * context.A;
Console.WriteLine("[{0}] root2: {1}", Thread.CurrentThread.ManagedThreadId, context.Root2);
}
