org.apache.drill.exec.planner.common

Class DrillLimitRelBase

java.lang.Object

org.apache.calcite.rel.AbstractRelNode

org.apache.calcite.rel.SingleRel

org.apache.drill.exec.planner.common.DrillLimitRelBase

All Implemented Interfaces:

Cloneable, org.apache.calcite.plan.RelOptNode, org.apache.calcite.rel.RelNode, DrillRelNode

Direct Known Subclasses:

DrillLimitRel, LimitPrel

public abstract class DrillLimitRelBase
extends org.apache.calcite.rel.SingleRel
implements DrillRelNode

Base class for logical and physical Limits implemented in Drill

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.calcite.rel.RelNode

org.apache.calcite.rel.RelNode.Context

Field Summary

Fields

Modifier and Type	Field and Description
protected org.apache.calcite.rex.RexNode	fetch
protected org.apache.calcite.rex.RexNode	offset

Fields inherited from class org.apache.calcite.rel.SingleRel

input

Fields inherited from class org.apache.calcite.rel.AbstractRelNode

digest, id, rowType, traitSet

Constructor Summary

Constructors

Constructor and Description
DrillLimitRelBase(org.apache.calcite.plan.RelOptCluster cluster, org.apache.calcite.plan.RelTraitSet traitSet, org.apache.calcite.rel.RelNode child, org.apache.calcite.rex.RexNode offset, org.apache.calcite.rex.RexNode fetch)
DrillLimitRelBase(org.apache.calcite.plan.RelOptCluster cluster, org.apache.calcite.plan.RelTraitSet traitSet, org.apache.calcite.rel.RelNode child, org.apache.calcite.rex.RexNode offset, org.apache.calcite.rex.RexNode fetch, boolean pushDown)

Method Summary

Modifier and Type	Method and Description
org.apache.calcite.plan.RelOptCost	computeSelfCost(org.apache.calcite.plan.RelOptPlanner planner, org.apache.calcite.rel.metadata.RelMetadataQuery mq)
double	estimateRowCount(org.apache.calcite.rel.metadata.RelMetadataQuery mq)
org.apache.calcite.rel.RelWriter	explainTerms(org.apache.calcite.rel.RelWriter pw)
org.apache.calcite.rex.RexNode	getFetch()
org.apache.calcite.rex.RexNode	getOffset()
boolean	isPushDown()

Methods inherited from class org.apache.calcite.rel.SingleRel

childrenAccept, deriveRowType, getInput, getInputs, replaceInput

Methods inherited from class org.apache.calcite.rel.AbstractRelNode

accept, accept, collectVariablesSet, collectVariablesUsed, computeDigest, computeSelfCost, copy, equals, explain, getChildExps, getCluster, getCollationList, getConvention, getCorrelVariable, getDescription, getDigest, getExpectedInputRowType, getId, getInput, getQuery, getRelTypeName, getRows, getRowType, getTable, getTraitSet, getVariablesSet, getVariablesStopped, hashCode, isDistinct, isKey, isValid, isValid, metadata, onRegister, recomputeDigest, register, sole, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.calcite.rel.RelNode

accept, accept, childrenAccept, collectVariablesSet, collectVariablesUsed, computeSelfCost, copy, explain, getChildExps, getCollationList, getConvention, getCorrelVariable, getExpectedInputRowType, getInput, getInputs, getQuery, getRelTypeName, getRows, getRowType, getTable, getVariablesSet, getVariablesStopped, isDistinct, isKey, isValid, isValid, metadata, onRegister, recomputeDigest, register, replaceInput

Methods inherited from interface org.apache.calcite.plan.RelOptNode

getCluster, getDescription, getDigest, getId, getTraitSet

Field Detail

offset

protected org.apache.calcite.rex.RexNode offset

fetch

protected org.apache.calcite.rex.RexNode fetch

Constructor Detail

DrillLimitRelBase

public DrillLimitRelBase(org.apache.calcite.plan.RelOptCluster cluster,
                         org.apache.calcite.plan.RelTraitSet traitSet,
                         org.apache.calcite.rel.RelNode child,
                         org.apache.calcite.rex.RexNode offset,
                         org.apache.calcite.rex.RexNode fetch)

DrillLimitRelBase

public DrillLimitRelBase(org.apache.calcite.plan.RelOptCluster cluster,
                         org.apache.calcite.plan.RelTraitSet traitSet,
                         org.apache.calcite.rel.RelNode child,
                         org.apache.calcite.rex.RexNode offset,
                         org.apache.calcite.rex.RexNode fetch,
                         boolean pushDown)

Method Detail

getOffset

public org.apache.calcite.rex.RexNode getOffset()

getFetch

public org.apache.calcite.rex.RexNode getFetch()

computeSelfCost

public org.apache.calcite.plan.RelOptCost computeSelfCost(org.apache.calcite.plan.RelOptPlanner planner,
                                                          org.apache.calcite.rel.metadata.RelMetadataQuery mq)

Specified by:

computeSelfCost in interface org.apache.calcite.rel.RelNode

Overrides:

computeSelfCost in class org.apache.calcite.rel.AbstractRelNode

explainTerms

public org.apache.calcite.rel.RelWriter explainTerms(org.apache.calcite.rel.RelWriter pw)

Overrides:

explainTerms in class org.apache.calcite.rel.SingleRel

estimateRowCount

public double estimateRowCount(org.apache.calcite.rel.metadata.RelMetadataQuery mq)

Specified by:

estimateRowCount in interface org.apache.calcite.rel.RelNode

Overrides:

estimateRowCount in class org.apache.calcite.rel.SingleRel

isPushDown

public boolean isPushDown()