public static XElement Serialize(Homework h) {
var e = new XElement("homework");
e.Add(new XAttribute("name", h.Name));
e.Add(new XAttribute("description", h.Description != null ? h.Description : "null"));
e.Add(new XAttribute("status", h.Status));
e.Add(new XAttribute("kind", h.Kind.ToString()));
e.Add(new XAttribute("finalGrade", h.FinalGrade.HasValue ? h.FinalGrade.Value.ToString() : "null"));
e.Add(new XAttribute("dueDate", h.DueDate.ToString()));
e.Add(new XAttribute("turnedInDate", h.TurnedInDate.HasValue ? h.TurnedInDate.Value.ToString() : "null"));
return e;
}
public static async Task<Homework> CreateAsync(string name, string desc, HomeworkKind k, DateTime due, Class o) {
var hw = new Homework() {
Owner = o,
Name = name,
Description = desc,
Kind = k,
Status = HomeworkStatus.Incomplete,
FinalGrade = null,
DueDate = due,
TurnedInDate = null
};
hw.Owner.Homework.Add(hw);
await hw.Owner.Commit();
return hw;
}
public static Homework Deserialize(XElement e, Class o) {
var hw = new Homework() {
Owner = o,
Name = e.Attribute("name").Value,
Description = e.Attribute("description").Value != "null" ? e.Attribute("description").Value : null,
Status = (HomeworkStatus)Enum.Parse(typeof(HomeworkStatus), e.Attribute("status").Value),
Kind = (HomeworkKind)Enum.Parse(typeof(HomeworkKind), e.Attribute("kind").Value),
DueDate = DateTime.Parse(e.Attribute("dueDate").Value),
TurnedInDate = e.Attribute("turnedInDate").Value == "null" ? null : new DateTime?(DateTime.Parse(e.Attribute("turnedInDate").Value))
};
if (e.Attribute("finalGrade").Value == "null") hw.FinalGrade = null; else hw.FinalGrade = int.Parse(e.Attribute("finalGrade").Value);
return hw;
}