// this functins serialize and saves the task.
public static void save(string name, int maxCapacity, string author, string columnID)
{
Log.Info("Saving Column " + name);
ColumnD columnToSave = new ColumnD(name, maxCapacity);
Stream myFileStream = File.Create("Column" + author + columnID);
BinaryFormatter serializes = new BinaryFormatter();
serializes.Serialize(myFileStream, columnToSave);
myFileStream.Close();
}
// this function deserialize and return task
public static ColumnD Open(string columnID, string author)
{
if (File.Exists("Column" + author + columnID))
{
Stream myOtherFileStream = File.OpenRead("Column" + author + columnID);
BinaryFormatter deserializer = new BinaryFormatter();
ColumnD columnToOpen = (ColumnD)deserializer.Deserialize(myOtherFileStream);
myOtherFileStream.Close();
return(columnToOpen);
}
Log.Warn("Failed to find column #" + columnID + " in the database.");
return(null);
}
// this function collet all the tasks from data and forward to the specific column they belong to.
public int open(string author, string existingColumns)
{
int numberOfColumns = 1;
columnsHashTable = new Hashtable();
this.currColumnCount = 0;
string columnID;
string[] splited = existingColumns.Split('+');
for (int i = 0; i < splited.Length; i = i + 1)
{
if (!splited[i].Equals(""))
{
columnID = splited[i];
ColumnD columnD = DataLayerColumn.Open(columnID, author);
Column column = new Column(columnD.getName());
column.setMAX_TASKS(author, columnD.getMaxCapacity());
columnsHashTable.Add(numberOfColumns, column);
this.currColumnCount = this.currColumnCount + 1;
numberOfColumns = numberOfColumns + 1;
Log.Info("Column " + column.getName() + " loaded successfully from the database.");
}
}
int numberOfTasksAdded = 0;
TaskD taskD = DataLayerTask.Open(numberOfTasksAdded, author);
while (taskD != null)
{
Column column = (Column)columnsHashTable[taskD.getStatus()];
column.addTask(taskD.getTitle(), taskD.getDescription(), taskD.getStatus(), taskD.getDueDate(), taskD.getCreationTime(), taskD.getAuthor(), taskD.getTaskUID());
Log.Info("Task #" + numberOfTasksAdded + " loaded successfully from the database.");
numberOfTasksAdded++;
taskD = DataLayerTask.Open(numberOfTasksAdded, author);
}
return(numberOfTasksAdded);
}
