public static void EntityListByEmit(System.Data.IDataReader DataReader, DbExecuteReadOnebyOneAction <T> callback)
{
Dictionary <string, string> FieldDic = new Dictionary <string, string>();
int i = 0;
while (i < DataReader.FieldCount)
{
string Name = DataReader.GetName(i);
if (!FieldDic.ContainsKey(Name.ToLower()))
{
FieldDic.Add(Name.ToLower(), Name);
}
i++;
}
EntityPropertyEmitSetter[] ps = EntityPropertyEmitSetter.GetProperties(typeof(T));
long rowNum = 0;
while (DataReader.Read())
{
T obj = new T();
int num = 0;
while (num < ps.Length)
{
string fieldName = ps[num].Info.Name;
string name = fieldName.ToLower();
object val = DataReader[FieldDic[name]];
if (FieldDic.ContainsKey(name) && val != DBNull.Value)
{
ps[num].Setter(obj, val);
}
num++;
}
rowNum++;
DbExecuteReadOnebyOneResult <T> result = new DbExecuteReadOnebyOneResult <T>(rowNum, obj);
try
{
callback(result);
}
catch
{
break;
}
if (!result.Next)
{
break;
}
}
DataReader.Close();
}
/// <summary>
/// 获取一个类中的所有公开实例属性和它们的Set方法委托
/// </summary>
public static EntityPropertyEmitSetter[] GetProperties(Type type)
{
EntityPropertyEmitSetter[] arr;
if (Cache.TryGetValue(type, out arr))
{
return(arr);
}
PropertyInfo[] ps = type.GetProperties();
arr = new EntityPropertyEmitSetter[ps.Length];
Type delegateType = typeof(ZeroEntityPropertyEmitSetter);
for (int i = 0; i < ps.Length; i++)
{
EntityPropertyEmitSetter op = new EntityPropertyEmitSetter();
op.Info = ps[i];
op.Setter = CreateSetter(op.Info, delegateType);
arr[i] = op;
}
Cache.Add(type, arr);
return(arr);
}
public static List <T> EntityListByEmit(System.Data.IDataReader DataReader)
{
Dictionary <string, string> FieldDic = new Dictionary <string, string>();
int i = 0;
while (i < DataReader.FieldCount)
{
string Name = DataReader.GetName(i);
if (!FieldDic.ContainsKey(Name.ToLower()))
{
FieldDic.Add(Name.ToLower(), Name);
}
i++;
}
List <T> Li = new List <T>();
EntityPropertyEmitSetter[] ps = EntityPropertyEmitSetter.GetProperties(typeof(T));
while (DataReader.Read())
{
T obj = new T();
int num = 0;
while (num < ps.Length)
{
string fieldName = ps[num].Info.Name;
string name = fieldName.ToLower();
object val = DataReader[FieldDic[name]];
if (FieldDic.ContainsKey(name) && val != DBNull.Value)
{
ps[num].Setter(obj, val);
}
num++;
}
Li.Add(obj);
}
DataReader.Close();
return(Li);
}
