/// <summary>
/// 插入一条数据
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="t"></param>
/// <returns></returns>
public int INSERT <T>(T t) where T : BaseModel
{
if (t == null)
{
return(0);
}
Type type = typeof(T);
foreach (var property in type.GetProperties())
{
if (property.IsDefined(typeof(IAttributeCheck), true))
{
var temp = property.GetCustomAttributes(typeof(IAttributeCheck), true)
.FirstOrDefault(item => item is IAttributeCheck);
if (temp is IAttributeCheck)
{
IAttributeCheck attribute = temp as IAttributeCheck;
if (!attribute.Check(property.GetValue(t)))
{
return(0);
}
}
}
}
Func <T, int> func = (a =>
{
connection.Open(); //open the connection
string cmd = "INSERT INTO `" + getClassName(type) + "` ";
List <string> PropertyList = new List <string>();
List <string> ValueList = new List <string>();
foreach (var property in type.GetProperties())
{
if (GetPropertyName(property) == "id")
{
break;
}
if (property.GetValue(t) != null)
{
PropertyList.Add(GetPropertyName(property));
ValueList.Add("'" + property.GetValue(t).ToString() + "'");
}
}
var Properties = String.Join(",", PropertyList);
var Values = String.Join(",", ValueList);
cmd += "(" + Properties + ")" + " VALUES " + "(" + Values + ")";
MySqlCommand mysqlcom = new MySqlCommand(cmd, connection);
int count = mysqlcom.ExecuteNonQuery();
// INSERT INTO `user` (name, num) VALUES('刘九', '1231564')
connection.Close();
return(count);
});
return(GenericCache <CallbackHelper> .GetCache().ThreadWithArgeWithRetrun(func).Invoke());
}
public int Delete <T>(int id) where T : BaseModel
{
if (Read <T>(id).Count > 0)
{
Func <T, int> func = (a =>
{
// DELETE FROM `user` WHERE id = 2
connection.Open(); //open the connection
Type type = typeof(T);
string cmd = "DELETE FROM `" + getClassName(type) + "` " + " WHERE id = " + id.ToString();
MySqlCommand mysqlcom = new MySqlCommand(cmd, connection);
int count = mysqlcom.ExecuteNonQuery();
connection.Close();
return(count);
});
return(GenericCache <CallbackHelper> .GetCache().ThreadWithArgeWithRetrun(func).Invoke());
}
return(0);
}
public List <T> Read <T>(int id) where T : BaseModel
{
return(GenericCache <CallbackHelper> .GetCache().ThreadWithReturn(() =>
{
connection.Open(); //open the connection
cmd = connection.CreateCommand();
Type type = typeof(T);
cmd.CommandText = BulidSql(id, type);
MySqlDataAdapter mda = new MySqlDataAdapter(cmd);
DataTable dt = new DataTable();
mda.Fill(dt);
connection.Close();
List <T> tlist = new List <T>();
for (int i = 0; i < dt.Rows.Count; i++)
{
T t = Activator.CreateInstance <T>();
for (int j = 0; j < dt.Columns.Count; j++)
{
foreach (var property in type.GetProperties())
{
var propertyName = GetPropertyName(property);
if (dt.Columns[j].ColumnName == propertyName)
{
if (dt.Rows[i][j] != DBNull.Value)
{
property.SetValue(t, dt.Rows[i][j]);
}
else
{
property.SetValue(t, null);
}
break;
}
}
}
tlist.Add(t);
}
return tlist;
}).Invoke());
}
public int Update <T>(T t) where T : BaseModel
{
if (t == null)
{
return(0);
}
Type type = typeof(T);
foreach (var property in type.GetProperties())
{
if (property.IsDefined(typeof(IAttributeCheck), true))
{
var temp = property.GetCustomAttributes(typeof(IAttributeCheck), true)
.FirstOrDefault(item => item is IAttributeCheck);
if (temp is IAttributeCheck)
{
IAttributeCheck attribute = temp as IAttributeCheck;
if (!attribute.Check(property.GetValue(t)))
{
return(0);
}
}
}
}
int id = -1;
foreach (var property in type.GetProperties())
{
if (GetPropertyName(property) == "id")
{
if (property.GetValue(t) != null)
{
int.TryParse(property.GetValue(t).ToString(), out id);
break;
}
}
}
if (id == -1)
{
return(0);
}
if (Read <T>(id).Count > 0)
{
Func <T, int> func = (a =>
{
connection.Open(); //open the connection
string cmd = "UPDATE `" + getClassName(type) + "` SET ";
// UPDATE Person SET Address = 'Zhongshan 23', City = 'Nanjing'
List <string> cmdPartList = new List <string>();
foreach (var property in type.GetProperties())
{
if (GetPropertyName(property) == "id")
{
break;
}
if (property.GetValue(t) != null)
{
cmdPartList.Add(GetPropertyName(property) + "=" + "'" + property.GetValue(t).ToString() + "'");
}
}
var cmdparts = String.Join(",", cmdPartList);
cmd += cmdparts + " WHERE id = " + id.ToString();
MySqlCommand mysqlcom = new MySqlCommand(cmd, connection);
int count = mysqlcom.ExecuteNonQuery();
// INSERT INTO `user` (name, num) VALUES('刘九', '1231564')
connection.Close();
return(count);
});
return(GenericCache <CallbackHelper> .GetCache().ThreadWithArgeWithRetrun(func).Invoke());
}
return(0);
}
