org.apache.drill.exec.store.plan.rel

Class PluginLimitRel

java.lang.Object

org.apache.calcite.rel.AbstractRelNode

org.apache.calcite.rel.SingleRel

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

org.apache.drill.exec.store.plan.rel.PluginLimitRel

All Implemented Interfaces:

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

public class PluginLimitRel
extends DrillLimitRelBase
implements PluginRel

Limit implementation for Drill plugins.

Nested Class Summary

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

org.apache.calcite.rel.RelNode.Context

Field Summary

Fields inherited from class org.apache.drill.exec.planner.common.DrillLimitRelBase

fetch, 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
PluginLimitRel(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
boolean	canImplement(PluginImplementor implementor)
org.apache.calcite.plan.RelOptCost	computeSelfCost(org.apache.calcite.plan.RelOptPlanner planner, org.apache.calcite.rel.metadata.RelMetadataQuery mq)
PluginLimitRel	copy(org.apache.calcite.plan.RelTraitSet traitSet, List<org.apache.calcite.rel.RelNode> inputs)
org.apache.calcite.rel.RelNode	copy(org.apache.calcite.plan.RelTraitSet traitSet, List<org.apache.calcite.rel.RelNode> inputs, boolean pushDown)
void	implement(PluginImplementor implementor)

Methods inherited from class org.apache.drill.exec.planner.common.DrillLimitRelBase

estimateRowCount, explainTerms, getFetch, getOffset, 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, 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, estimateRowCount, 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

Constructor Detail

PluginLimitRel

public PluginLimitRel(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

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 DrillLimitRelBase

copy

public PluginLimitRel copy(org.apache.calcite.plan.RelTraitSet traitSet,
                           List<org.apache.calcite.rel.RelNode> inputs)

Specified by:

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

Overrides:

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

copy

public org.apache.calcite.rel.RelNode copy(org.apache.calcite.plan.RelTraitSet traitSet,
                                           List<org.apache.calcite.rel.RelNode> inputs,
                                           boolean pushDown)

Specified by:

copy in class DrillLimitRelBase

implement

public void implement(PluginImplementor implementor)
               throws IOException

Specified by:

implement in interface PluginRel

Throws:

IOException

canImplement

public boolean canImplement(PluginImplementor implementor)

Specified by:

canImplement in interface PluginRel