private Func <DbDataReader, object> GetCreateDelegate()
{
if (_mapperCollection.HasFactory(_type))
{
return(dataReader => _mapperCollection.GetFactory(_type)(dataReader));
}
if (_constructorInfo == null)
{
return(_ => null);
}
var create = CreateObjectFactoryMethodWithCtorParams(_constructorInfo);
var parameters = _constructorInfo.GetParameters()
.Select(x => MappingHelper.GetDefault(x.ParameterType))
.ToArray();
return(x => create(parameters));
}
private static string ProcessParam(ref string sql, string rawParam, object[] args_src, List <object> args_dest, bool reuseParameters)
{
string param = rawParam.Substring(1);
object arg_val;
int paramIndex;
if (Int32.TryParse(param, out paramIndex))
{
// Numbered parameter
if (paramIndex < 0 || paramIndex >= args_src.Length)
{
throw new ArgumentOutOfRangeException(String.Format("Parameter '@{0}' specified but only {1} parameters supplied (in `{2}`)", paramIndex, args_src.Length, sql));
}
arg_val = args_src[paramIndex];
}
else
{
// Look for a property on one of the arguments with this name
bool found = false;
arg_val = null;
foreach (var o in args_src)
{
var dict = o as IDictionary;
if (dict != null)
{
Type[] arguments = dict.GetType().GetGenericArguments();
if (arguments[0] == typeof(string))
{
var val = dict[param];
if (val != null)
{
found = true;
arg_val = val;
break;
}
}
}
var pi = o.GetType().GetProperty(param);
if (pi != null)
{
arg_val = pi.GetValue(o, null);
found = true;
break;
}
}
if (!found)
{
throw new ArgumentException(String.Format("Parameter '@{0}' specified but none of the passed arguments have a property with this name (in '{1}')", param, sql));
}
}
// Expand collections to parameter lists
if ((arg_val as System.Collections.IEnumerable) != null &&
(arg_val as string) == null &&
(arg_val as byte[]) == null)
{
var sb = new StringBuilder();
foreach (var i in arg_val as System.Collections.IEnumerable)
{
var indexOfExistingValue = args_dest.IndexOf(i);
if (indexOfExistingValue >= 0)
{
sb.Append((sb.Length == 0 ? "@" : ",@") + indexOfExistingValue);
}
else
{
sb.Append((sb.Length == 0 ? "@" : ",@") + args_dest.Count);
args_dest.Add(i);
}
}
if (sb.Length == 0)
{
Type type = typeof(string);
var t = arg_val.GetType();
if (t.IsArray)
{
type = t.GetElementType();
}
else if (t.IsOrHasGenericInterfaceTypeOf(typeof(IEnumerable <>)))
{
type = t.GetGenericArguments().First();
}
sb.AppendFormat($"select @{args_dest.Count} /*poco_dual*/ where 1 = 0");
args_dest.Add(MappingHelper.GetDefault(type));
}
return(sb.ToString());
}
else
{
if (reuseParameters)
{
var indexOfExistingValue = args_dest.IndexOf(arg_val);
if (indexOfExistingValue >= 0)
{
return("@" + indexOfExistingValue);
}
}
args_dest.Add(arg_val);
return("@" + (args_dest.Count - 1).ToString());
}
}