/// <summary>
/// Test the value list for True or False.
/// </summary>
/// <param name="o"></param>
/// <param name="datatype"></param>
/// <returns></returns>
private bool TestValueList(object o, ColumnType datatype)
{
if (_type == ExpressionType.ValueList)
{
if (datatype != _columnType)
{
o = Column.ConvertToObject(o, _columnType);
}
return(_list.ContainsKey(o));
}
else if (_type == ExpressionType.Query)
{
// todo: convert to valuelist before if everything is resolvable
Result r = sSelect.GetResult(0, null);
Record n = r.Root;
ColumnType type = r.Type[0];
if (datatype != type)
{
o = Column.ConvertToObject(o, type);
}
while (n != null)
{
object o2 = n.Data[0];
if (o2 != null && o2.Equals(o))
{
return(true);
}
n = n.Next;
}
return(false);
}
throw Trace.Error(Trace.WRONG_DATA_TYPE);
}