org.eigenbase.relopt.volcano
Class VolcanoPlanner.DeferringRuleCall

java.lang.Object
  org.eigenbase.relopt.RelOptRuleCall
      org.eigenbase.relopt.volcano.VolcanoRuleCall
          org.eigenbase.relopt.volcano.VolcanoPlanner.DeferringRuleCall

Enclosing class:

VolcanoPlanner

private static class VolcanoPlanner.DeferringRuleCall
extends VolcanoRuleCall

A rule call which defers its actions. Whereas RelOptRuleCall invokes the rule when it finds a match, a DeferringRuleCall creates a VolcanoRuleMatch which can be invoked later.

Field Summary

Fields inherited from class org.eigenbase.relopt.volcano.VolcanoRuleCall

volcanoPlanner

Fields inherited from class org.eigenbase.relopt.RelOptRuleCall

rels, tracer

Constructor Summary

VolcanoPlanner.DeferringRuleCall(VolcanoPlanner planner, RelOptRuleOperand operand)

Method Summary

protected void

onMatch() Rather than invoking the rule (as the base method does), creates a VolcanoRuleMatch which can be invoked later.

Methods inherited from class org.eigenbase.relopt.volcano.VolcanoRuleCall

match, transformTo

Methods inherited from class org.eigenbase.relopt.RelOptRuleCall

getChildRels, getOperand0, getParents, getPlanner, getRels, getRule

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

VolcanoPlanner.DeferringRuleCall

VolcanoPlanner.DeferringRuleCall(VolcanoPlanner planner,
                                 RelOptRuleOperand operand)

Method Detail

onMatch

protected void onMatch()

Rather than invoking the rule (as the base method does), creates a VolcanoRuleMatch which can be invoked later.

Overrides:

onMatch in class VolcanoRuleCall