public class DependencyOrderWalker<O extends Operator,P extends OperatorPlan<O>> extends PlanWalker<O,P>
mPlan| Constructor and Description |
|---|
DependencyOrderWalker(P plan) |
DependencyOrderWalker(P plan,
boolean walkLeavesInOrder) |
| Modifier and Type | Method and Description |
|---|---|
protected void |
doAllPredecessors(O node,
Set<O> seen,
Collection<O> fifo) |
PlanWalker<O,P> |
spawnChildWalker(P plan)
Return a new instance of this same type of walker for a subplan.
|
void |
walk(PlanVisitor<O,P> visitor)
Begin traversing the graph.
|
getPlan, setPlanpublic DependencyOrderWalker(P plan)
plan - Plan for this walker to traverse.public DependencyOrderWalker(P plan, boolean walkLeavesInOrder)
plan - Plan for this walker to traverse.boolean - walkLeavesInOrder Sort the leaves before walkingpublic void walk(PlanVisitor<O,P> visitor) throws VisitorException
walk in class PlanWalker<O extends Operator,P extends OperatorPlan<O>>visitor - Visitor this walker is being used by.VisitorException - if an error is encountered while walking.public PlanWalker<O,P> spawnChildWalker(P plan)
PlanWalkerspawnChildWalker in class PlanWalker<O extends Operator,P extends OperatorPlan<O>>plan - Plan for the new walker.protected void doAllPredecessors(O node, Set<O> seen, Collection<O> fifo) throws VisitorException
VisitorExceptionCopyright © 2007-2017 The Apache Software Foundation