/// <summary>
/// Adds an object to be tracked by this objecttype.
/// </summary>
/// <param name="existingObject">Object to track.</param>
/// <param name="assumeNew">If false, ignores objects not ready to be saved (with id=-1).
/// Else assign a new ID if the object has not been saved yet.</param>
/// <returns>True on success. False if somehow the add failed.</returns>
public virtual bool Add(ISaveable existingObject, bool assumeNew = true)
{
int id = existingObject.GetSaveID();
if (assumeNew && id == -1)
{
// SetSaveID is only called by two things: Loading, and this method. By locking here, this should be threadsafe.
lock (this)
{
id = existingObject.GetSaveID();
if (id == -1)
{
id = NextFreeNumber(); //Note that this may get a lock on ItemDictionary also, and then the file stream.
existingObject.SetSaveID(id);
existingObject.Save();
}
}
}
if (id >= 0)
{
Add(existingObject, id, false);
return(true);
}
return(false);
}