public T GetOrCreate <T>(string objectId) where T : class, new()
{
PersistencePathValidator.ThrowIfPathInvalid(objectId);
lock (locker)
{
PersistentObject po;
if (!objects.TryGetValue(objectId.ToUpperInvariant(), out po))
{
var data = dataStorage.TryLoad(setId, objectId);
T o;
if (data != null)
{
o = serializer.Deserialize <T>(data);
if (o != null)
{
// unexpectedly, 'o' can be null, if 'data' is a NUL string.
po = new PersistentObject(objectId, o);
}
}
// if object never existed or could not be deserialized, create a new object
if (po == null)
{
o = new T();
po = new PersistentObject(objectId, o);
po.SaveAndFlagUnchanged(serializer, dataStorage, setId);
}
objects[objectId.ToUpperInvariant()] = po;
}
return((T)po.Obj);
}
}
/// <summary>
/// </summary>
/// <param name="setId">Case insensitive</param>
/// <returns></returns>
ObjectSet GetOrCreateObjectSetPrivate(string setId)
{
PersistencePathValidator.ThrowIfPathInvalid(setId);
lock (locker)
{
ObjectSet pc;
if (!sets.TryGetValue(setId.ToUpperInvariant(), out pc))
{
pc = new ObjectSet(setId, serializer, dataStorage, locker);
sets[setId.ToUpperInvariant()] = pc;
}
return(pc);
}
}