private static void Create(ref SelectList root, ref SelectList last, TableReference tableReference)
{
foreach (var cr in tableReference.ColumnReferences)
{
// Create new expression
var nsl = SelectList.Create(cr);
// If root is uninitialized, initialize now
if (root == null)
{
root = nsl;
}
// Append to list if not the first
if (last != null)
{
last.Append(nsl);
}
last = nsl;
}
if (root == null)
{
throw new InvalidOperationException();
}
}
public SelectList SubstituteStars()
{
var ce = FindDescendant <ColumnExpression>();
var subsl = FindDescendant <SelectList>();
SelectList sl = null;
if (ce.ColumnReference.IsStar)
{
// Build select list from the column list of
// the referenced table, then replace current node
if (ce.TableReference.IsUndefined)
{
sl = SelectList.Create(FindAscendant <QuerySpecification>());
}
else
{
sl = SelectList.Create(ce.TableReference);
}
if (subsl != null)
{
sl.Append(subsl.SubstituteStars());
}
return(sl);
}
else
{
if (subsl != null)
{
Replace(subsl.SubstituteStars());
}
return(this);
}
}