private void CollectTopLevelJoins(Collection4 joins, QCon constraintWithJoins)
{
IEnumerator i = constraintWithJoins.IterateJoins();
while (i.MoveNext())
{
QConJoin join = (QConJoin)i.Current;
if (!join.HasJoins())
{
if (!joins.ContainsByIdentity(join))
{
joins.Add(join);
}
}
else
{
CollectTopLevelJoins(joins, join);
}
}
}
private void CollectLeavesFromJoinConstraint(Collection4 leaves, QCon constraint)
{
if (constraint is QConJoin)
{
CollectLeavesFromJoin(leaves, (QConJoin)constraint);
}
else
{
if (!leaves.ContainsByIdentity(constraint))
{
leaves.Add(constraint);
}
}
}
