public List <Flight> Search(string expression)
{
List <Flight> data = flightDAO.SelectAll();
List <string> rawList = new List <string>();
List <int> selection = new List <int>();
// Parse flight list to raw text list
foreach (Flight flight in data)
{
rawList.Add(flight.ToString());
}
string[] commands = expression.Split(';');
List <int> temp;
Regex regex;
foreach (string command in commands)
{
regex = new Regex(command, RegexOptions.IgnoreCase);
temp = new List <int>();
for (int i = 0; i < rawList.Count; i++)
{
if (regex.IsMatch(rawList[i]))
{
if (!temp.Contains(i))
{
temp.Add(i);
}
}
}
if (selection.Count == 0)
{
selection.AddRange(temp);
}
else
{
selection = selection.Intersect(temp).ToList <int>();
}
}
//Create final result
List <Flight> result = new List <Flight>();
for (int i = 0; i < selection.Count; i++)
{
result.Add(data[selection[i]]);
}
return(result);
}