public void SetStructBegin(int colno)
{
_valueholder._colidx = colno;
Logger.Assert(_valueholder.DataType.HasHeading);
var cols = _valueholder._types[colno].Heading.Columns.ToArray();
//var cols = _valueholder._types[colno].Heading.Columns.Select(c => c.DataType).ToArray();
_valueholder = new ValueHolder {
_types = cols.Select(c => c.DataType).ToArray(),
_values = new TypedValue[cols.Length],
_parent = _valueholder,
};
}
public void GetStructBegin(int colno)
{
_valueholder._colidx = colno;
Logger.Assert(_valueholder.DataType.HasHeading);
var cols = _valueholder._types[colno].Heading.Columns;
var value = _valueholder._values[colno];
var tuple = (value is TupleValue) ? value.AsRow().Values
: (value is UserValue) ? value.AsUser()
: _valueholder._list[_valueholder._rowidx++];
_valueholder = new ValueHolder {
_types = cols.Select(c => c.DataType).ToArray(),
_names = cols.Select(c => c.Name).ToArray(),
_values = tuple,
_parent = _valueholder,
};
}
public void SetStructEnd()
{
var tuple = FilledValues();
_valueholder = _valueholder._parent;
var datatype = _valueholder.DataType;
if (datatype is DataTypeUser)
{
_valueholder._values[_valueholder._colidx] = UserValue.Create(tuple, datatype as DataTypeUser);
}
else if (datatype is DataTypeTuple)
{
var row = DataRow.Create(datatype.Heading, tuple);
_valueholder._values[_valueholder._colidx] = TupleValue.Create(row);
}
else
{
Logger.Assert(_valueholder.DataType is DataTypeRelation);
_valueholder._list.Add(tuple);
}
}
public void GetStructEnd()
{
_valueholder = _valueholder._parent;
Logger.Assert(_valueholder.DataType.HasHeading);
}