public UlTable(UlDb OwnerDB, UlTableAttribute attribute, List <UlTableColumnAttribute> ColumnAttributes)
{
tableAttribute = attribute;
columnAttributes = ColumnAttributes;
ownerDb = OwnerDB;
command = new SqlCommand()
{
Connection = ownerDb.connection,
};
table = new UlTableList <T>();
}
/// <summary>
/// Створює чи привязуються до таблиці. Всі дані беруться з атрибутів класу T
/// </summary>
/// <typeparam name="T">Клас-шаблон для таблиці</typeparam>
/// <returns>Таблиця, яка відповідатиме класу T</returns>
public UlTable <T> CreateOrLinkToTable <T>() where T : class, new()
{
string tableName;
Type type = typeof(T);
UlTable <T> rez;
List <UlTableColumnAttribute> columnAttributes = new List <UlTableColumnAttribute>();
UlTableAttribute ulTableAttribute = (UlTableAttribute)type.GetCustomAttributes(false).FirstOrDefault((a) => a is UlTableAttribute);
if (ulTableAttribute?.name?.Equals("") ?? true)
{
tableName = type.Name;
rez = new UlTable <T>(this, new UlTableAttribute(tableName), columnAttributes);
}
else
{
tableName = ulTableAttribute.name;
rez = new UlTable <T>(this, ulTableAttribute, columnAttributes);
}
command.CommandType = CommandType.Text;
command.CommandText = $"IF NOT EXISTS(select * from sys.tables where name='{tableName}') " +
$"CREATE TABLE {tableName} ( ";
foreach (var prop in type.GetProperties())
{
if (prop.GetGetMethod().IsPrivate || prop.GetSetMethod().IsPrivate)
{
continue;
}
if (prop.GetCustomAttributes(false).FirstOrDefault((a) => a is UlTableColumnAttribute) is UlTableColumnAttribute columnAttribute)
{
if (columnAttribute.name?.Equals("") ?? true)
{
columnAttribute.name = prop.Name;
}
command.CommandText += columnAttribute.name + ' ';
//for(int i = 0; i < table.Columns.Count; i++) {
// sqlsc += ",";
//}
//return sqlsc.Substring(0, sqlsc.Length - 1) + "\n)";
if (columnAttribute.dbType?.Equals("") ?? true)
{
switch (prop.PropertyType.FullName)
{
case "System.Byte":
columnAttribute.dbType = "tinyint";
break;
case "System.Int16":
columnAttribute.dbType = "smallint";
break;
case "System.Int32":
columnAttribute.dbType = "int";
break;
case "System.Int64":
columnAttribute.dbType = "bigint";
break;
case "System.Float":
columnAttribute.dbType = "real";
break;
case "System.Double":
columnAttribute.dbType = "float";
break;
case "System.Decimal":
columnAttribute.dbType = "decimal";
break;
case "System.DateTime":
columnAttribute.dbType = "datetime";
break;
case "System.String":
default:
columnAttribute.dbType = "nvarchar(100)";
break;
}
}
command.CommandText += columnAttribute.dbType + ' ';
if (columnAttribute.isPrimaryKey)
{
command.CommandText += "IDENTITY PRIMARY KEY ";
}
if (columnAttribute.notNull && !columnAttribute.isPrimaryKey)
{
command.CommandText += "NOT NULL ";
}
command.CommandText += ", ";
columnAttributes.Add(columnAttribute);
}
}
command.CommandText = command.CommandText.Substring(0, command.CommandText.Length - 2);
command.CommandText += ")";
connection.Open();
command.ExecuteNonQuery();
connection.Close();
return(rez);
}
