public class ReverseDependencyOrderWalker extends PlanWalker
plan
Constructor and Description |
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ReverseDependencyOrderWalker(OperatorPlan plan) |
Modifier and Type | Method and Description |
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protected void |
doAllSuccessors(Operator node,
Set<Operator> seen,
Collection<Operator> fifo) |
PlanWalker |
spawnChildWalker(OperatorPlan plan)
Return a new instance of this same type of walker for a subplan.
|
void |
walk(PlanVisitor visitor)
Begin traversing the graph.
|
getPlan, setPlan
public ReverseDependencyOrderWalker(OperatorPlan plan)
public PlanWalker spawnChildWalker(OperatorPlan plan)
PlanWalker
spawnChildWalker
in class PlanWalker
plan
- Plan for the new walker.public void walk(PlanVisitor visitor) throws FrontendException
walk
in class PlanWalker
visitor
- Visitor this walker is being used by.VisitorException
- if an error is encountered while walking.FrontendException
protected void doAllSuccessors(Operator node, Set<Operator> seen, Collection<Operator> fifo) throws FrontendException
FrontendException
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