org.apache.calcite.rel.rules

Class ReduceDecimalsRule.FloorExpander

java.lang.Object

org.apache.calcite.rel.rules.ReduceDecimalsRule.RexExpander

org.apache.calcite.rel.rules.ReduceDecimalsRule.FloorExpander

Enclosing class:

ReduceDecimalsRule

private class ReduceDecimalsRule.FloorExpander
extends ReduceDecimalsRule.RexExpander

Expander that rewrites floor(decimal) expressions:

 if (value < 0)
     (value - 0.99...) / (10^scale)
 else
     value / (10 ^ scale)
 

Field Summary

Fields inherited from class org.apache.calcite.rel.rules.ReduceDecimalsRule.RexExpander

builder, int8, real8

Constructor Summary

Constructors

Modifier	Constructor and Description
private	FloorExpander(RexBuilder rexBuilder)

Method Summary

Modifier and Type	Method and Description
RexNode	expand(RexCall call) Rewrites an expression containing decimals.

Methods inherited from class org.apache.calcite.rel.rules.ReduceDecimalsRule.RexExpander

accessValue, canExpand, decodeValue, encodeValue, encodeValue, ensureScale, ensureType, ensureType, makeApproxLiteral, makeApproxScaleFactor, makeCase, makeCase, makeDivide, makeExactLiteral, makeIsNegative, makeIsPositive, makeMinus, makeMultiply, makePlus, makeRoundFactor, makeScaleFactor, powerOfTen, scaleDown, scaleDownDouble, scaleUp

Methods inherited from class java.lang.Object

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

Constructor Detail

FloorExpander

private FloorExpander(RexBuilder rexBuilder)

Method Detail

expand

public RexNode expand(RexCall call)

Description copied from class: ReduceDecimalsRule.RexExpander

Rewrites an expression containing decimals. Normally, this method always performs a rewrite, but implementations may choose to return the original expression if no change was required.

Specified by:

expand in class ReduceDecimalsRule.RexExpander