net.sf.farrago.fennel.rel
Class FennelCalcRule

java.lang.Object
  org.eigenbase.relopt.RelOptRule
      org.eigenbase.rel.convert.ConverterRule
          net.sf.farrago.fennel.rel.FennelCalcRule

public class FennelCalcRule
extends ConverterRule

FennelCalcRule is a rule for implementing CalcRel via a Fennel Calculator (FennelCalcRel).

Version:

$Id: //open/dev/farrago/src/net/sf/farrago/fennel/rel/FennelCalcRule.java#1 $

Author:

jhyde

Field Summary

static FennelCalcRule

instance The singleton instance.

Fields inherited from class org.eigenbase.relopt.RelOptRule

ANY, description, operands

Constructor Summary

private

FennelCalcRule() Creates a new FennelCalcRule object.

Method Summary

RelNode	convert(RelNode rel)
CallingConvention	getOutConvention() Returns the calling convention of the result of firing this rule, null if not known.

Methods inherited from class org.eigenbase.rel.convert.ConverterRule

getInTrait, getOutTrait, getTraitDef, isGuaranteed, onMatch

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

Field Detail

instance

public static final FennelCalcRule instance

The singleton instance.

Constructor Detail

FennelCalcRule

private FennelCalcRule()

Creates a new FennelCalcRule object.

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 ConverterRule

convert

public RelNode convert(RelNode rel)

Specified by:

convert in class ConverterRule