public static StudentIndexableCollection CreateMockStudents(int count, int startRange, int endRange)
{
var students = new StudentIndexableCollection();
for (int i = 0; i < count; i++)
{
var student = Student.CreateRandomStudent(startRange, endRange);
student.Id = i;
students.Add(student);
}
return(students);
}
public void JoinTest()
{
int setASize = 10;
int setBSize = SampleSize;
int nameCount = Convert.ToInt32(Math.Max(setASize, (double)setBSize) * 0.02);
if (nameCount == 0)
{
nameCount = 1;
}
var studentsA = StudentIndexableCollection.CreateMockStudents(setASize, 0, nameCount);
var studentsB = StudentIndexableCollection.CreateMockStudents(setBSize, 0, nameCount);
var arrayStudentsA = new Student[studentsA.Count];
var arrayStudentsB = new Student[studentsB.Count];
studentsA.CopyTo(arrayStudentsA, 0);
studentsB.CopyTo(arrayStudentsB, 0);
Thread.Sleep(0);
using (new OperationTimer("Indexed")) {
//var q = from s1 in studentsA
// join s2 in studentsB on s1.FirstName equals s2.FirstName
// select new { s1.FirstName, s2.LastName };
var q = studentsA.Join(studentsB,
s1 => s1.FirstName, s2 => s2.FirstName,
(s1, s2) => new { s1.FirstName, s2.LastName });
Console.WriteLine("Indexed sequece joined results count: " + q.Count());
}
Thread.Sleep(0);
using (new OperationTimer("Non Indexed")) {
//var q = from s1 in arrayStudentsA
// join s2 in arrayStudentsB on s1.FirstName equals s2.FirstName
// select new {s1.FirstName, s2.LastName};
var q = arrayStudentsA.Join(arrayStudentsB,
s1 => s1.FirstName, s2 => s2.FirstName,
(s1, s2) => new { s1.FirstName, s2.LastName });
Console.WriteLine("Nonindexed sequece joined results count: " + q.Count());
}
Thread.Sleep(0);
using (new OperationTimer("Indexed")) {
//var q = from s1 in studentsA
// join s2 in studentsB on s1.FirstName equals s2.FirstName
// select new { s1.FirstName, s2.LastName };
var q = studentsA.Join(studentsB,
s1 => s1.FirstName, s2 => s2.FirstName,
(s1, s2) => new { s1.FirstName, s2.LastName });
Console.WriteLine("Indexed sequece joined results count: " + q.Count());
}
Thread.Sleep(0);
using (new OperationTimer("Non Indexed")) {
//var q = from s1 in arrayStudentsA
// join s2 in arrayStudentsB on s1.FirstName equals s2.FirstName
// select new {s1.FirstName, s2.LastName};
var q = arrayStudentsA.Join(arrayStudentsB,
s1 => s1.FirstName, s2 => s2.FirstName,
(s1, s2) => new { s1.FirstName, s2.LastName });
Console.WriteLine("Nonindexed sequece joined results count: " + q.Count());
}
}