public HashSet <DBColumn> Load(Tabloid Tabloid)
{
// in cache
string tabloidRealName = _db.CommandSet.ToRealTableName(_db.Application, Tabloid.Name);
if (Cache.ContainsKey(tabloidRealName))
{
return(Cache[tabloidRealName]);
}
HashSet <DBColumn> result = new HashSet <DBColumn>();
using (DBReader reader = _db.ExecuteCommand(_db.CommandSet.LIST_column(_db, Tabloid.Name)))
{
while (reader.Read())
{
string defaultValue = null;
if (reader["default"] != DBNull.Value)
{
defaultValue = Convert.ToString(reader["default"]).Trim(new char[] { '(', ')' }); // removes ('value')
if ((!defaultValue.StartsWith("'") || !defaultValue.EndsWith("'")) && defaultValue.ToUpper() != "NULL")
{
defaultValue = $"'{defaultValue}'";
}
}
result.Add(new DBColumn(_db)
{
Tabloid = Tabloid,
Name = (string)reader["name"],
Type = DataType.FromDBName((string)reader["typeName"], _db.Type),
MaxLength = reader["max_length"] != DBNull.Value ? Convert.ToInt32(reader["max_length"]) : -1,
IsNullable = Convert.ToBoolean(reader["is_nullable"]),
IsUnique = Convert.ToBoolean(reader["is_unique"] != DBNull.Value ? reader["is_unique"] : false) || (string)reader["name"] == DBCommandSet.PrimaryKey,
DefaultValue = defaultValue
//,Scale = Convert.ToInt32(reader["scale"])
});
}
}
Cache.Add(tabloidRealName, result);
return(result);
}
public HashSet <DBForeignKey> Load(Tabloid tabloid)
{
HashSet <DBForeignKey> result = new HashSet <DBForeignKey>();
using (DBReader reader = _db.ExecuteCommand(_db.CommandSet.LIST_foreignKey(_db, tabloid.Name, true, false)))
{
while (reader.Read())
{
result.Add(new DBForeignKey(_db)
{
SourceTable = (tabloid as DBTable),
SourceColumn = (string)reader["sourceColumn"],
TargetTable = _db.Table(_db.CommandSet.FromRealTableName(_db.Application, (string)reader["targetTable"])),
TargetColumn = (string)reader["targetColumn"],
OnDelete = (string)reader["onDelete"],
OnUpdate = (string)reader["onUpdate"]
});
}
}
return(result);
}
