//@Override
public int createNewAppointment(String dateTimeString, int secDurationInt, String header, String comment) //call by this client but throw XML-RPC
{
//call by the client of the current machine to make a new appointment
//it must return unique sequence number of the new appointment or -1 if it fail to add
//because in C# XmlRpcServer Library stoping the servicing has an error we refuse the incoming requests if the server
//is not in its online mode.
if (!ServerStatus.getServerStatus())
{
return(-1);
}
Date dateTime;
Integer secDuration;
try
{
dateTime = new Date(dateTimeString);
secDuration = new Integer(secDurationInt);
}
catch (System.Exception e)
{
Console.WriteLine(e.Message);
return(-1);
}
//throwing an exception has sence or meaning here
//because this function will call locally
if (secDuration.intValue() < 1)
{
throw new System.ArgumentOutOfRangeException("The seconds of duration[secDuration] must be greater than 0.");
}
//Create a new seqNumber and add the appointment to the array list!
try
{
SequentialNumber sqn = new SequentialNumber();
Appointment appointment = new Appointment(sqn, dateTime, secDuration.intValue(), header, comment);
this.appointmentsList.Add(appointment);
Console.WriteLine("\n_______________________________");
Console.WriteLine("You have made a new appointment on this host successfully.\n" + appointment.ToString());
this.setLastModified();
this.updateLocalDatabase();
return(sqn.getSequentialNumber());
}
catch (System.IndexOutOfRangeException e) //for creating sequential number
{
Console.WriteLine(e.Message);
return(-1);
}
}
//@Override
public bool addNewAppointment(int seqNumberInt, String dateTimeString, int secDurationInt, String header, String comment)
{
//call by other clients to send a new appointment
//because in C# XmlRpcServer Library stoping the servicing has an error we refuse the incoming requests if the server
//is not in its online mode.
if (!ServerStatus.getServerStatus())
{
return(false);
}
Integer seqNumber;
Date dateTime;
Integer secDuration;
try
{
seqNumber = new Integer(seqNumberInt);
dateTime = new Date(dateTimeString);
secDuration = new Integer(secDurationInt);
}
catch (System.Exception)
{
//Console.WriteLine("\nOne request for adding a new appointment to the current system has received but in converting the data in has crashed by the following exception : ");
//Console.WriteLine("Exception Message : \n" + e.Message);
//Console.WriteLine("Received Data : " + "\nSeqential Number : " + seqNumberInt + "\nDate : " + dateTimeString + "\nDuration " + secDurationInt + "\nHeader" + header + "\nComment" + comment);
return(false);
}
if (seqNumber.intValue() < 1)
{
//because it will called by remote host throwing exception is meaning less.
//throw new System.ArgumentOutOfRangeException("The sequential number[seqNumber] must be greater than 0.");
//Console.WriteLine("\nOne request for adding a new appointment to the current system has received but the sequential number was invalid.");
//Console.WriteLine("Received Data : " + "\nSeqential Number : " + seqNumberInt + "\nDate : " + dateTimeString + "\nDuration " + secDurationInt + "\nHeader" + header + "\nComment" + comment);
return(false);
}
else if (secDuration.intValue() < 1)
{
//throw new System.ArgumentOutOfRangeException("The seconds of duration[secDuration] must be greater than 0.");
//Console.WriteLine("\nOne request for adding a new appointment to the current system has received but the duration number was invalid.");
//Console.WriteLine("Received Data : " + "\nSeqential Number : " + seqNumberInt + "\nDate : " + dateTimeString + "\nDuration " + secDurationInt + "\nHeader" + header + "\nComment" + comment);
return(false);
}
//Create requested sequence number or a new sequence number and add the appointment to the array list.
try
{
//We make the sequential number and then check for its existance
//if the sequential number is exist then we make a new one and it will continue till get a unique sequential number
//another strategy for here can be to return false if we have the current sequential number in this host
//but we think it is better to not lose any apointment even with registering it with a wrong sequential number
//but based on what said in the assignment sheet
//we must not consider the conflict of the concurrency of the creation of appointments
SequentialNumber sqn = new SequentialNumber(seqNumber.intValue());
bool flag;
do
{
flag = false;
foreach (Appointment tempAppointment in this.appointmentsList) //search to sure about non existence of the new sequence number in appointment list
{
if (tempAppointment.getSequentialNumber() == sqn.getSequentialNumber())
{
sqn = new SequentialNumber();
flag = true;
break;
}
}
}while(flag);
if (sqn.getSequentialNumber() != seqNumber.intValue())
{
Console.WriteLine("Remote addAppointment: The sequance number [" + seqNumber.intValue() + "] that has been sent by a remote host, is exist. So a new sequance number has assigned : " + sqn.getSequentialNumber());
}
Appointment appointment = new Appointment(sqn, dateTime, secDuration.intValue(), header, comment);
this.appointmentsList.Add(appointment);
if (this.appointmentsList.Exists(temp => temp == appointment)) //if the add was successful?
{
//This will show when a far host add an appointment to the list
//Console.WriteLine("");
//Console.WriteLine("_______________________________");
//Console.WriteLine("One appointment has been added.");
//Console.WriteLine("-------------------------------");
//Console.WriteLine(appointment.ToString());
this.setLastModified();
this.updateLocalDatabase();
return(true);
}
else
{
return(false);
}
}
catch (System.IndexOutOfRangeException) //for creating sequential number
{
//Console.WriteLine(e.Message);
return(false);
}
}
//Other functions that are helpful for output!
public int getSequentialNumber()
{
return(seqNumber.getSequentialNumber()); //Do not return any reference to the SequentialNumber to prevent any unwanted changes! Just the integer number is enough.
}
