public bool MoveNext()
{
if (LeftToRight)
{
CurrentValue = CurrentNode?.Values.Count > _i ? CurrentNode.Values[_i] : null;
}
else
{
CurrentValue = _i >= 0 ? CurrentNode.Values[_i] : null;
}
if (CurrentValue == null)
{
if ((LeftToRight && CurrentNode?.RightSibling != null) || (!LeftToRight && CurrentNode?.LeftSibling != null))
{
CurrentNode = LeftToRight ? CurrentNode.RightSibling : CurrentNode.LeftSibling;
if (LeftToRight)
{
_i = 0;
}
else
{
_i = CurrentNode.Values.Count - 1;
}
CurrentValue = CurrentNode.Values.Count >= _i ? CurrentNode.Values[_i] : null;
}
}
if (LeftToRight)
{
_i++;
}
else
{
_i--;
}
if (CurrentValue != null && Condition != null)
{
CustomTuple tuple = new CustomTuple(Relation);
tuple.AddValueFor(Condition.Column.Name, (int)CurrentValue.Value);
if (!Condition.SatisfiesCondition(tuple))
{
return(MoveNext());
}
}
return(CurrentValue != null);
}
