org.apache.beam.sdk.extensions.sql.impl.rel

Class BeamCalcRel

java.lang.Object

org.apache.calcite.rel.AbstractRelNode

org.apache.calcite.rel.SingleRel

org.apache.calcite.rel.core.Calc

org.apache.beam.sdk.extensions.sql.impl.rel.BeamCalcRel

All Implemented Interfaces:

java.lang.Cloneable, BeamRelNode, org.apache.calcite.plan.RelOptNode, org.apache.calcite.rel.RelNode

public class BeamCalcRel
extends org.apache.calcite.rel.core.Calc
implements BeamRelNode

BeamRelNode to replace a Project node.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	BeamCalcRel.WrappedList<T> WrappedList translates List on access.
static class	BeamCalcRel.WrappedMap<V> WrappedMap translates Map on access.
static class	BeamCalcRel.WrappedRow WrappedRow translates Row on access.

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.Calc

program

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
BeamCalcRel(org.apache.calcite.plan.RelOptCluster cluster, org.apache.calcite.plan.RelTraitSet traits, org.apache.calcite.rel.RelNode input, org.apache.calcite.rex.RexProgram program)

Method Summary

Modifier and Type	Method and Description
BeamCostModel	beamComputeSelfCost(org.apache.calcite.plan.RelOptPlanner planner, org.apache.calcite.rel.metadata.RelMetadataQuery mq) This method is called by org.apache.beam.sdk.extensions.sql.impl.CalciteQueryPlanner.NonCumulativeCostImpl.
PTransform<PCollectionList<Row>,PCollection<Row>>	buildPTransform()
org.apache.calcite.rel.core.Calc	copy(org.apache.calcite.plan.RelTraitSet traitSet, org.apache.calcite.rel.RelNode input, org.apache.calcite.rex.RexProgram program)
NodeStats	estimateNodeStats(org.apache.calcite.rel.metadata.RelMetadataQuery mq) This method is called by org.apache.beam.sdk.extensions.sql.impl.planner.RelMdNodeStats.
int	getLimitCountOfSortRel()
boolean	isInputSortRelAndLimitOnly()

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

accept, computeSelfCost, copy, copy, estimateRowCount, explainTerms, getProgram, isValid

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

childrenAccept, deriveRowType, getInput, getInputs, replaceInput

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

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

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.beam.sdk.extensions.sql.impl.rel.BeamRelNode

getPCollectionInputs, getPipelineOptions, isBounded

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

BeamCalcRel

public BeamCalcRel(org.apache.calcite.plan.RelOptCluster cluster,
                   org.apache.calcite.plan.RelTraitSet traits,
                   org.apache.calcite.rel.RelNode input,
                   org.apache.calcite.rex.RexProgram program)

Method Detail

copy

public org.apache.calcite.rel.core.Calc copy(org.apache.calcite.plan.RelTraitSet traitSet,
                                             org.apache.calcite.rel.RelNode input,
                                             org.apache.calcite.rex.RexProgram program)

Specified by:

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

buildPTransform

public PTransform<PCollectionList<Row>,PCollection<Row>> buildPTransform()

Specified by:

buildPTransform in interface BeamRelNode

getLimitCountOfSortRel

public int getLimitCountOfSortRel()

estimateNodeStats

public NodeStats estimateNodeStats(org.apache.calcite.rel.metadata.RelMetadataQuery mq)

Description copied from interface: BeamRelNode

This method is called by org.apache.beam.sdk.extensions.sql.impl.planner.RelMdNodeStats. This is currently only used in SQLTransform Path (and not JDBC path). When a RelNode wants to calculate its BeamCost or estimate its NodeStats, it may need NodeStat of its inputs. However, it should not call this directly (because maybe its inputs are not physical yet). It should call BeamSqlRelUtils.getNodeStats(org.apache.calcite.rel.RelNode, org.apache.calcite.rel.metadata.RelMetadataQuery) instead.

Specified by:

estimateNodeStats in interface BeamRelNode

beamComputeSelfCost

public BeamCostModel beamComputeSelfCost(org.apache.calcite.plan.RelOptPlanner planner,
                                         org.apache.calcite.rel.metadata.RelMetadataQuery mq)

Description copied from interface: BeamRelNode

This method is called by org.apache.beam.sdk.extensions.sql.impl.CalciteQueryPlanner.NonCumulativeCostImpl. This is currently only used in SQLTransform Path (and not JDBC path). This is needed when Calcite Query Planner wants to get the cost of a plan. Instead of calling this directly for a node, if we needed that it should be obtained by calling mq.getNonCumulativeCost. This way RelMetadataQuery will call this method instead of ComputeSelfCost if the handler is set correctly (see org.apache.beam.sdk.extensions.sql.impl.CalciteQueryPlanner#convertToBeamRel(String))

Specified by:

beamComputeSelfCost in interface BeamRelNode

isInputSortRelAndLimitOnly

public boolean isInputSortRelAndLimitOnly()