public class DepthFirstWalker<O extends Operator,P extends OperatorPlan<O>> extends PlanWalker<O,P>
mPlan| Constructor and Description |
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DepthFirstWalker(P plan) |
| Modifier and Type | Method and Description |
|---|---|
PlanWalker<O,P> |
spawnChildWalker(P plan)
Return a new instance of this same type of walker for a subplan.
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void |
walk(PlanVisitor<O,P> visitor)
Begin traversing the graph.
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getPlan, setPlanpublic DepthFirstWalker(P plan)
plan - Plan for this walker to traverse.public 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.Copyright © 2007-2017 The Apache Software Foundation