public void Sort()
{
if (ThreadCount == 0)
{
throw new InvalidOperationException("Threads property not set and default value 0 is not valid.");
}
if (ThreadCount == 1)
{
Result = Copies.GetRange(_startI, _count);
Result.Sort(_comparer);
}
else
{
var leftSon = new ParallelSorter(_startI, _count / 2);
leftSon.ThreadCount = ThreadCount / 2;
leftSon.Copies = Copies;
var leftThread = new Thread(leftSon.Sort);
var rightSon = new ParallelSorter(_startI + _count / 2, _count - _count / 2);
rightSon.ThreadCount = (ThreadCount + 1) / 2;
rightSon.Copies = Copies;
var rightThread = new Thread(rightSon.Sort);
leftThread.Start();
rightThread.Start();
leftThread.Join();
rightThread.Join();
Result = new List <Copy>();
Merge(leftSon.Result, rightSon.Result);
}
}
public List <Copy> ExecuteQuery()
{
if (ThreadCount == 0)
{
throw new InvalidOperationException("Threads property not set and default value 0 is not valid.");
}
bool Filter(Copy copy)
{
var shelf = copy.Book.Shelf;
return(copy.State == CopyState.OnLoan && shelf[shelf.Length - 1] >= 'A' && shelf[shelf.Length - 1] <= 'Q');
}
var filteredCopies = FilterCopies(Library.Copies, Filter);
var sorter = new ParallelSorter(0, filteredCopies.Count)
{
Copies = filteredCopies, ThreadCount = ThreadCount
};
sorter.Sort();
return(sorter.Result);
}
