private static int hashing(int field, remoting_interfaces.Tuple tp, int replicas)
{
if (field == 1) // get the tuple id field
{
string str = tp.getID().ToString();
return(Math.Abs(str.GetHashCode()) % replicas);
}
else if (field == 2) // get the tuple user field
{
return(Math.Abs(tp.getUser().GetHashCode()) % replicas);
}
else if (field == 3) // get the tuple url field
{
return(Math.Abs(tp.getURL().GetHashCode()) % replicas);
}
return(0);
}
public List <String> getoutput(string dll, string method, remoting_interfaces.Tuple Tuple)
{
List <string> outputUsers = new List <string>();
string path = Directory.GetCurrentDirectory();
path = path.Remove(path.Length - 13);
Assembly testDLL = Assembly.LoadFile(@path + dll);
foreach (var type in testDLL.GetExportedTypes())
{
//Get methods from class
MethodInfo[] members = type.GetMethods(BindingFlags.Public | BindingFlags.Instance | BindingFlags.InvokeMethod);
foreach (MemberInfo member in members)
{
if (member.Name.Equals(method))
{
MethodInfo methodInfo = type.GetMethod(member.Name);
if (methodInfo != null)
{
IList <IList <string> > result;
ParameterInfo[] parameters = methodInfo.GetParameters();
object classInstance = Activator.CreateInstance(type, null);
if (parameters.Length == 0)
{
result = (IList <IList <string> >)methodInfo.Invoke(classInstance, null);
}
else
{
object[] arr4 = new object[1];
List <string> inputLista = new List <string>();
inputLista.Add(Tuple.getID().ToString());
string str = Tuple.getUser();
str = str.Replace(" ", String.Empty);
inputLista.Add(str);
arr4[0] = inputLista;
result = (IList <IList <string> >)methodInfo.Invoke(classInstance, arr4);
//transform the list of list returned by the method, and convert to a list of strings
foreach (List <string> outputlist in result)
{
foreach (string output in outputlist)
{
outputUsers.Add(output);
}
}
}
}
}
}
}
return(outputUsers);
}
public remoting_interfaces.Tuple doTweeters(remoting_interfaces.Tuple input_Tuple, int field_number, string condition, string value)
{
List <string> tweeters = new List <string>();
remoting_interfaces.Tuple Tuple = new remoting_interfaces.Tuple(0, "", "");
string[] tokens = { input_Tuple.getID().ToString(), input_Tuple.getUser(), input_Tuple.getURL() };
//know what field_number(one, two or three)
//field_number is ID
if (field_number == 1)
{
switch (condition)
{
case "<":
if (Int32.Parse(tokens[0]) < Int32.Parse(value))
{
Tuple.setID(Int32.Parse(tokens[0]));
Tuple.setUser(tokens[1]);
Tuple.setURL(tokens[2]);
}
break;
case ">":
if (Int32.Parse(tokens[0]) > Int32.Parse(value))
{
Tuple.setID(Int32.Parse(tokens[0]));
Tuple.setUser(tokens[1]);
Tuple.setURL(tokens[2]);
}
break;
case "=":
if (Int32.Parse(tokens[0]) == Int32.Parse(value))
{
Tuple.setID(Int32.Parse(tokens[0]));
Tuple.setUser(tokens[1]);
Tuple.setURL(tokens[2]);
}
break;
default:
Console.WriteLine("default");
break;
}
}
//field_number is users
else if (field_number == 2)
{
if (tokens[1].Contains(value))
{
Tuple.setID(Int32.Parse(tokens[0]));
Tuple.setUser(tokens[1]);
Tuple.setURL(tokens[2]);
}
}
//field_nember is the URLs
else if (field_number == 3)
{
if (tokens[2].Contains(value))
{
Tuple.setID(Int32.Parse(tokens[0]));
Tuple.setUser(tokens[1]);
Tuple.setURL(tokens[2]);
}
}
return(Tuple);
}