public static DeserializerDelegate <T> CreateDynamicDeserializer <T>(this DbDataReader reader, string[,] commandToObjectMap)
where T : class
{
DynDeserializerItem doi = ParseMap(reader, commandToObjectMap);
return(new DeserializerDelegate <T>(
(new DynDeserializerUtil(doi)).Deserializer <T>));
}
void InternalDeserializer(Dictionary <string, object> upContext, Dictionary <int, object> pkContext, DbDataReader reader, DynDeserializerItem o)
{
Dictionary <string, object> values;
foreach (KeyValuePair <string, int> kv in o.Fields)
{
upContext[kv.Key] = reader.GetValue(kv.Value);
}
List <object> list = new List <object>(); object a;
foreach (KeyValuePair <string, DynDeserializerItem> kv in o.Collections)
{
if (kv.Value.Index != -1)
{
if (reader.IsDBNull(kv.Value.Index))
{
if (!upContext.ContainsKey(kv.Key))
{
upContext.Add(kv.Key, (dynamic)null);
}
continue;
}
object pk = reader.GetValue(kv.Value.Index);
if (pkContext.ContainsKey(kv.Value.Index))
{
if ((pkContext[kv.Value.Index] as IComparable).CompareTo(pk) > 0)
{
if (!upContext.ContainsKey(kv.Key))
{
upContext.Add(kv.Key, (dynamic)null);
}
continue;
}
}
pkContext[kv.Value.Index] = pk;
}
values = new Dictionary <string, object>(StringComparer.InvariantCultureIgnoreCase);
if (kv.Value.Single)
{
upContext.Add(kv.Key, (dynamic)DynObj.Create(values));
}
else
{
upContext.TryGetValue(kv.Key, out a);
if (null == (list = a as List <object>))
{
list = new List <object>();
upContext[kv.Key] = list;
}
list.Add((dynamic)DynObj.Create(values));
}
InternalDeserializer(values, pkContext, reader, kv.Value);
}
}
public DynDeserializerUtil(DynDeserializerItem dynObjItem)
{
_dynObjItem = dynObjItem;
}
static DynDeserializerItem ParseMap(DbDataReader reader, string[,] commandToObjectMap)
{
if (commandToObjectMap == null)
{
return(null);
}
string name;
string[] fieldNameItems;
char[] fieldSplit = new char[] { '.' };
Dictionary <string, DynDeserializerItem> searchItems;
DynDeserializerItem items = new DynDeserializerItem();
DynDeserializerItem item = null; bool single = false;
for (int i = 0, l = commandToObjectMap.Length / 2; i < l; i++)
{
fieldNameItems = commandToObjectMap[i, 0].Split(fieldSplit);
if (1 == fieldNameItems.Length)
{
name = fieldNameItems[0];
try
{
if ("PrimaryKey" == name)
{
items.Index = reader.GetOrdinal(commandToObjectMap[i, 1]);
}
else
{
items.Fields[name] = reader.GetOrdinal(commandToObjectMap[i, 1]);
}
}
catch (IndexOutOfRangeException)
{
continue;
}
}
else
{
searchItems = items.Collections;
for (int j = 0, jl = fieldNameItems.Length - 1; j <= jl; j++)
{
name = fieldNameItems[j];
single = name.EndsWith(":1");
if (single)
{
name = name.Substring(0, name.Length - 2);
}
if (searchItems.TryGetValue(name, out item))
{
searchItems = item.Collections;
}
else
{
item = new DynDeserializerItem()
{
Single = single
};
searchItems[name] = item;
searchItems = item.Collections;
}
if ((j + 1) == jl)
{
try
{
name = fieldNameItems[j + 1];
if ("PrimaryKey" == name)
{
item.Index = reader.GetOrdinal(commandToObjectMap[i, 1]);
}
else
{
item.Fields[name] = reader.GetOrdinal(commandToObjectMap[i, 1]);
}
}
catch (IndexOutOfRangeException)
{ }
break;
}
}
}
}
try
{
if (-1 == items.Index)
{
items.Index = reader.GetOrdinal("Id");
}
}
catch (IndexOutOfRangeException)
{ }
return(items);
}
