public static T ExpandObject <T>(object o, Func <FieldInfo, IDataRecord, object> customApply) where T : class, new()
{
Type t = typeof(T);
T returnObject = (T)o;
string dictionaryKey = string.Empty;
SqlCommand sqlCommand;
foreach (FieldInfo fieldInfo in returnObject.GetType().GetFields())
{
if (Attribute.IsDefined(fieldInfo, typeof(DictionaryMapAttribute)))
{
DictionaryMapAttribute dictionaryMapAttribute = (DictionaryMapAttribute)Attribute.GetCustomAttribute(fieldInfo, typeof(DictionaryMapAttribute));
using (DataManager.Current.OpenConnection())
{
if (!dictionaryMapAttribute.IsStoredProcedure)
{
sqlCommand = DataManager.CreateCommand(dictionaryMapAttribute.Command);
}
else
{
sqlCommand = DataManager.CreateCommand(dictionaryMapAttribute.Command, CommandType.StoredProcedure);
}
foreach (SqlParameter param in sqlCommand.Parameters)
{
string fieldName = param.ParameterName.Substring(1); //without the "@"
param.Value = returnObject.GetType().GetField(fieldName).GetValue(returnObject);
}
fieldInfo.SetValue(returnObject, GetDictionryObject(fieldInfo, sqlCommand.ExecuteReader()));
}
}
}
return((T)returnObject);
}
public static IDictionary GetDictionryObject(FieldInfo fieldInfo, IDataReader sqlDataReader)
{
string dictionaryKey = string.Empty;
if (!fieldInfo.FieldType.IsGenericType || fieldInfo.FieldType.GetGenericTypeDefinition() == typeof(IDictionary))
{
throw new Exception("This is not generic Dictionary");
}
Type keyElement = fieldInfo.FieldType.GetGenericArguments()[0];
Type typeElement = fieldInfo.FieldType.GetGenericArguments()[1];
if (Attribute.IsDefined(fieldInfo, typeof(DictionaryMapAttribute)))
{
DictionaryMapAttribute dictionaryMapAttribute = (DictionaryMapAttribute)Attribute.GetCustomAttribute(fieldInfo, typeof(DictionaryMapAttribute));
dictionaryKey = dictionaryMapAttribute.DictionaryKey;
}
else
{
throw new Exception("DictionaryMapatrribute not defined");
}
IDictionary returnObject = (IDictionary)Activator.CreateInstance(fieldInfo.FieldType);
if (typeElement.IsGenericType)
{
IList list = (IList)Activator.CreateInstance(typeElement);
int? lastAccountId = null;
while (sqlDataReader.Read())
{
object currentItem = Activator.CreateInstance(typeElement.GetGenericArguments()[0]);
if (lastAccountId != null)
{
if (lastAccountId != (int)sqlDataReader[dictionaryKey])
{
returnObject.Add(lastAccountId, list);
list = (IList)Activator.CreateInstance(typeElement);
}
}
foreach (FieldInfo f in typeElement.GetGenericArguments()[0].GetFields())
{
if (Attribute.IsDefined(f, typeof(FieldMapAttribute)))
{
FieldMapAttribute fieldMapAttribute = (FieldMapAttribute)Attribute.GetCustomAttribute(f, typeof(FieldMapAttribute));
object val = sqlDataReader[fieldMapAttribute.FieldName];
if (val is DBNull)
{
f.SetValue(currentItem, null);
}
else
{
f.SetValue(currentItem, val);
}
}
}
list.Add(currentItem);
lastAccountId = (int)sqlDataReader[dictionaryKey];
}
if (lastAccountId != null)
{
returnObject.Add(lastAccountId, list);
}
}
return(returnObject);
}
