org.apache.drill.exec.planner.logical

Class DrillSortRel

java.lang.Object

org.apache.calcite.rel.AbstractRelNode

org.apache.calcite.rel.SingleRel

org.apache.calcite.rel.core.Sort

org.apache.drill.exec.planner.logical.DrillSortRel

All Implemented Interfaces:

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

public class DrillSortRel
extends org.apache.calcite.rel.core.Sort
implements DrillRel, OrderedRel

Sort 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 inherited from class org.apache.calcite.rel.core.Sort

collation, fetch, fieldExps, offset

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

input

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

digest, id, rowType, traitSet

Fields inherited from interface org.apache.drill.exec.planner.logical.DrillRel

DRILL_LOGICAL

Constructor Summary

Constructors

Constructor and Description
DrillSortRel(org.apache.calcite.plan.RelOptCluster cluster, org.apache.calcite.plan.RelTraitSet traits, org.apache.calcite.rel.RelNode input, org.apache.calcite.rel.RelCollation collation) Creates a DrillSortRel.
DrillSortRel(org.apache.calcite.plan.RelOptCluster cluster, org.apache.calcite.plan.RelTraitSet traits, org.apache.calcite.rel.RelNode input, org.apache.calcite.rel.RelCollation collation, org.apache.calcite.rex.RexNode offset, org.apache.calcite.rex.RexNode fetch) Creates a DrillSortRel with offset and fetch.

Method Summary

Modifier and Type	Method and Description
boolean	canBeDropped() A method to return if this relational node can be dropped during optimization process.
static org.apache.calcite.rel.RelNode	convert(Order order, ConversionContext context)
DrillSortRel	copy(org.apache.calcite.plan.RelTraitSet traitSet, org.apache.calcite.rel.RelNode input, org.apache.calcite.rel.RelCollation collation, org.apache.calcite.rex.RexNode offset, org.apache.calcite.rex.RexNode fetch)
org.apache.calcite.rex.RexNode	getFetch() Fetch value represented in RexNode.
org.apache.calcite.rex.RexNode	getOffset() Offset value represented in RexNode.
LogicalOperator	implement(DrillImplementor implementor)

Methods inherited from class org.apache.calcite.rel.core.Sort

accept, computeSelfCost, copy, copy, explainTerms, getChildExps, getCollation, getCollationList

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

childrenAccept, deriveRowType, estimateRowCount, getInput, getInputs, replaceInput

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

accept, collectVariablesSet, collectVariablesUsed, computeDigest, computeSelfCost, equals, explain, getCluster, 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.drill.exec.planner.common.OrderedRel

getCollation

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

accept, accept, childrenAccept, collectVariablesSet, collectVariablesUsed, computeSelfCost, computeSelfCost, copy, 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

DrillSortRel

public DrillSortRel(org.apache.calcite.plan.RelOptCluster cluster,
                    org.apache.calcite.plan.RelTraitSet traits,
                    org.apache.calcite.rel.RelNode input,
                    org.apache.calcite.rel.RelCollation collation)

Creates a DrillSortRel.

DrillSortRel

public DrillSortRel(org.apache.calcite.plan.RelOptCluster cluster,
                    org.apache.calcite.plan.RelTraitSet traits,
                    org.apache.calcite.rel.RelNode input,
                    org.apache.calcite.rel.RelCollation collation,
                    org.apache.calcite.rex.RexNode offset,
                    org.apache.calcite.rex.RexNode fetch)

Creates a DrillSortRel with offset and fetch.

Method Detail

copy

public DrillSortRel copy(org.apache.calcite.plan.RelTraitSet traitSet,
                         org.apache.calcite.rel.RelNode input,
                         org.apache.calcite.rel.RelCollation collation,
                         org.apache.calcite.rex.RexNode offset,
                         org.apache.calcite.rex.RexNode fetch)

Specified by:

copy in class org.apache.calcite.rel.core.Sort

implement

public LogicalOperator implement(DrillImplementor implementor)

Specified by:

implement in interface DrillRel

convert

public static org.apache.calcite.rel.RelNode convert(Order order,
                                                     ConversionContext context)
                                              throws org.apache.calcite.rel.InvalidRelException

Throws:

org.apache.calcite.rel.InvalidRelException

getOffset

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

Description copied from interface: OrderedRel

Offset value represented in RexNode.

Specified by:

getOffset in interface OrderedRel

Returns:

offset.

getFetch

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

Description copied from interface: OrderedRel

Fetch value represented in RexNode.

Specified by:

getFetch in interface OrderedRel

Returns:

fetch

canBeDropped

public boolean canBeDropped()

Description copied from interface: OrderedRel

A method to return if this relational node can be dropped during optimization process.

Specified by:

canBeDropped in interface OrderedRel

Returns:

true if this node can be dropped, false otherwise.