public int GetNumOfComments(int threadId)
{
Message message = findMessage(threadId);
FirstMessage fm;
if (message.isFirst())
{
fm = (FirstMessage)message;
}
else
{
throw new ArgumentException(error_responseNotThread);
}
return(fm.getNumofComments());
}
public bool deleteMessage(int messageID)
{
Message ms = findMessage(messageID);
if (ms != null)
{
// if firstMessage, it should be deleted with all its comments
if (ms.isFirst())
{
HashSet <ResponseMessage> messagesForDeletion = ((FirstMessage)ms).getResponseMessages();
foreach (ResponseMessage rm in messagesForDeletion)
{
messages.Remove(rm);
}
}
//remove the message anyway
messages.Remove(ms);
return(true);
}
throw new InvalidOperationException(error_messageIdNotFound);
}
public bool deleteMessage(int userRequesterId, int messageID)
{
Message ms = findMessage(messageID);
if (ms != null)
{
if ((!(ms.publisherID != userRequesterId)) && (!(userRequesterId != 1)))
{
throw new UnauthorizedAccessException("User " + userRequesterId + " has no permissions to delete the message " + messageID);
}
// if firstMessage, it should be deleted with all its comments
if (ms.isFirst())
{
FirstMessage fm = (FirstMessage)ms;
HashSet <ResponseMessage> messagesForDeletion = fm.ResponseMessages;
while (messagesForDeletion.Count > 0)
{
ResponseMessage rm = messagesForDeletion.ElementAt(0);
fm.removeRespone(rm);
messages.Remove(rm);
}
messages.Remove(fm);
//removing firstMessage pointer from its thread
Thread trd = GetFirstMessageThread(fm);
DBthreadMan.remove(trd);
}
// if responseMessage, should delete itself and the pointer from its firstMessage
else
{
ResponseMessage rm = (ResponseMessage)ms;
FirstMessage fm = GetFirstMessage(rm);
fm.removeRespone(rm);
messages.Remove(rm);
}
saveMessageDB();
return(true);
}
throw new InvalidOperationException(error_messageIdNotFound);
}
