org.eigenbase.relopt.volcano
Class VolcanoPlannerTraitTest.IterSingleRule2

java.lang.Object
  org.eigenbase.relopt.RelOptRule
      org.eigenbase.relopt.volcano.VolcanoPlannerTraitTest.IterSingleRule2

Enclosing class:

VolcanoPlannerTraitTest

private static class VolcanoPlannerTraitTest.IterSingleRule2
extends RelOptRule

Field Summary

Fields inherited from class org.eigenbase.relopt.RelOptRule

ANY, description, operands

Constructor Summary

VolcanoPlannerTraitTest.IterSingleRule2()

Method Summary

CallingConvention	getOutConvention() Returns the calling convention of the result of firing this rule, null if not known.
RelTrait	getOutTrait() Returns the trait which will be modified as a result of firing this rule, or null if the rule is not a converter rule.
void	onMatch(RelOptRuleCall call) Receives notification about a rule match.

Methods inherited from class org.eigenbase.relopt.RelOptRule

convert, equals, equals, getOperand, getOperands, hashCode, matches, mergeTraitsAndConvert, mergeTraitsAndConvert, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

VolcanoPlannerTraitTest.IterSingleRule2

VolcanoPlannerTraitTest.IterSingleRule2()

Method Detail

getOutConvention

public CallingConvention getOutConvention()

Description copied from class: RelOptRule

Returns the calling convention of the result of firing this rule, null if not known.

Overrides:

getOutConvention in class RelOptRule

getOutTrait

public RelTrait getOutTrait()

Description copied from class: RelOptRule

Returns the trait which will be modified as a result of firing this rule, or null if the rule is not a converter rule.

Overrides:

getOutTrait in class RelOptRule

onMatch

public void onMatch(RelOptRuleCall call)

Description copied from class: RelOptRule

Receives notification about a rule match. At the time that this method is called, call.rels holds the set of relational expressions which match the operands to the rule; call.rels[0] is the root expression.

Typically a rule would check that the nodes are valid matches, creates a new expression, then calls back RelOptRuleCall.transformTo(org.eigenbase.rel.RelNode) to register the expression.

Specified by:

onMatch in class RelOptRule

Parameters:

call - Rule call

See Also:

RelOptRule.matches(RelOptRuleCall)