public void Load(BinaryReader reader, Action <int, string> values, int count)
{
if (reader.ReadByte() != VERSION)
{
throw new Exception("Invalid StringIndexerPersist version.");
}
PersistMode mode = (PersistMode)reader.ReadByte();
switch (mode)
{
case PersistMode.Raw:
{
new Raw().Load(reader, values, count);
}
break;
case PersistMode.Dictionary:
{
string[] map = new string[reader.ReadInt32()];
for (int i = 0; i < map.Length; i++)
{
map[i] = reader.ReadString();
}
new Int32IndexerPersist().Load(reader, (idx, value) => { values(idx, value == NULL_ID ? null : map[value]); }, count);
}
break;
default:
throw new NotSupportedException(mode.ToString());
}
}
bool IDataPersistence.Persist(IPersistence persistence)
{
persistence.UpsertField(Constants.IDataPesistence_InitializeMode, InitializeMode.ToString());
persistence.UpsertField(Constants.IDataPesistence_PersistMode, PersistMode.ToString());
persistence.UpsertFieldArray(Constants.IDataPesistence_DataConnections, DataConnections.ToArray());
return(true);
}
public void Store(BinaryWriter writer, Func <int, string> values, int count)
{
writer.Write(VERSION);
int MAP_CAPACITY = (int)((PERCENT / 100) * count);
Dictionary <string, int> map = new Dictionary <string, int>(/*MAP_CAPACITY*/); //optimistic variant
int ID = 0;
int[] indexes = new int[count];
PersistMode mode = PersistMode.Dictionary;
for (int i = 0; i < count; i++)
{
var value = values(i);
if (value == null)
{
indexes[i] = NULL_ID;
continue;
}
int id;
if (map.TryGetValue(value, out id))
{
indexes[i] = id;
continue;
}
if (map.Count == MAP_CAPACITY)
{
mode = PersistMode.Raw;
break;
}
map.Add(value, ID);
indexes[i] = ID;
ID++;
}
writer.Write((byte)mode);
switch (mode)
{
case PersistMode.Raw:
{
new Raw().Store(writer, values, count);
}
break;
case PersistMode.Dictionary:
{
writer.Write(map.Count);
foreach (var kv in map.OrderBy(x => x.Value))
{
writer.Write(kv.Key);
}
new Int32IndexerPersist().Store(writer, (idx) => { return(indexes[idx]); }, count);
}
break;
default:
throw new NotSupportedException(mode.ToString());
}
}
