// makes Snapshot from XML document with following structure:
//
//<snapshot>
// <info ... />
// <persons>
// <person ... />
// ...
// </persons>
// <operations>
// <operation ... />
// ...
// </operations>
//
public static Snapshot FromXml(XDocument doc)
{
// retrieving nodes
var persons = doc.Root.Element("persons").Elements("person");
var operations = doc.Root.Element("operations").Elements("operation");
// initializing snapshot
var info = ParseInfo(doc);
var snapshot = new Snapshot(info);
// parsing entities, ignoring relationships for now
foreach (XElement man in persons)
snapshot.Persons.Add(ParsePerson(man));
foreach (XElement op in operations)
snapshot.Operations.Add(ParseOperation(op));
// filling Person.Operations
foreach (Person man in snapshot.Persons)
{
XElement raw = persons.Single(el => el.Attribute("id").Value == man.ID.ToString());
int[] operationIds = FromCsv(raw.Attribute("operations").Value);
foreach (int id in operationIds)
man.Operations.Add(snapshot.Operations.Single(op => op.ID == id));
}
// filling Operation.Participants
foreach (Operation op in snapshot.Operations)
{
XElement raw = operations.Single(el => el.Attribute("id").Value == op.ID.ToString());
int[] personIds = FromCsv(raw.Attribute("participants").Value);
foreach (int id in personIds)
op.Participants.Add(snapshot.Persons.Single(man => man.ID == id));
}
return snapshot;
}
public SnapshotInfo(Snapshot snapshot)
{
Time = snapshot.Time;
Mark = snapshot.Mark;
OperationsCount = snapshot.Operations.Count;
PersonsCount = snapshot.Persons.Count;
}
public static XDocument ToXml(Snapshot set)
{
var info = new XElement("info",
new XAttribute("mark", set.Mark),
new XAttribute("time", set.Time.ToString(DateTimeFormat)),
new XAttribute("operationsCount", set.Operations.Count.ToString(NumberFormat)),
new XAttribute("personsCount", set.Persons.Count.ToString(NumberFormat)));
var persons = new XElement("persons");
foreach (Person man in set.Persons)
persons.Add(SerializePerson(man));
var operations = new XElement("operations");
foreach (Operation op in set.Operations)
operations.Add(SerializeOperation(op));
return new XDocument(
new XElement("snapshot", info, persons, operations));
}
/// <summary>
/// Saves current snapshot as an xml document to stream
/// </summary>
/// <param name="snapshot">Data to backup</param>
/// <param name="stream">Stream for saving data</param>
public void SaveTo(Snapshot snapshot, Stream stream)
{
XDocument backup = Serializer.ToXml(snapshot);
backup.Save(stream);
}
/// <summary>
/// Saves current snapshot as an xml document to file
/// </summary>
/// <param name="snapshot">Data to backup</param>
public void Save(Snapshot snapshot)
{
XDocument backup = Serializer.ToXml(snapshot);
backup.Save(GetPath(snapshot.Time));
}
