org.apache.beam.sdk.extensions.sql.zetasql.unnest

Class BeamZetaSqlUnnestRel

java.lang.Object

org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.rel.AbstractRelNode

org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.rel.SingleRel

org.apache.beam.sdk.extensions.sql.zetasql.unnest.ZetaSqlUnnest

org.apache.beam.sdk.extensions.sql.zetasql.unnest.BeamZetaSqlUnnestRel

All Implemented Interfaces:

java.lang.Cloneable, BeamRelNode, org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.plan.RelOptNode, org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.rel.RelNode

public class BeamZetaSqlUnnestRel
extends ZetaSqlUnnest
implements BeamRelNode

BeamRelNode to implement UNNEST, supporting specifically only Correlate with ZetaSqlUnnest.

This class is a copy of BeamUnnestRel except that in UnnestFn it does not treat elements of struct type differently.

Details of why unwrapping structs breaks ZetaSQL UNNEST syntax is in https://issues.apache.org/jira/browse/BEAM-10896.

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.rel.RelNode

org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.rel.RelNode.Context

Field Summary

Fields inherited from class org.apache.beam.sdk.extensions.sql.zetasql.unnest.ZetaSqlUnnest

withOrdinality

Fields inherited from class org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.rel.SingleRel

input

Fields inherited from class org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.rel.AbstractRelNode

digest, id, rowType, traitSet

Constructor Summary

Constructors

Constructor and Description

BeamZetaSqlUnnestRel(org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.plan.RelOptCluster cluster, org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.plan.RelTraitSet traitSet, org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.rel.RelNode input, org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.rel.type.RelDataType unnestType, java.util.List<java.lang.Integer> unnestIndices)

Method Summary

Modifier and Type	Method and Description
BeamCostModel	beamComputeSelfCost(org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.plan.RelOptPlanner planner, org.apache.beam.vendor.calcite.v1_20_0.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()
ZetaSqlUnnest	copy(org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.plan.RelTraitSet traitSet, org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.rel.RelNode input)
protected org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.rel.type.RelDataType	deriveRowType()
NodeStats	estimateNodeStats(org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.rel.metadata.RelMetadataQuery mq) This method is called by org.apache.beam.sdk.extensions.sql.impl.planner.RelMdNodeStats.
org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.rel.RelWriter	explainTerms(org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.rel.RelWriter pw)

Methods inherited from class org.apache.beam.sdk.extensions.sql.zetasql.unnest.ZetaSqlUnnest

copy, create, deriveUncollectRowType

Methods inherited from class org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.rel.SingleRel

childrenAccept, estimateRowCount, getInput, getInputs, replaceInput

Methods inherited from class org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.rel.AbstractRelNode

accept, accept, collectVariablesSet, collectVariablesUsed, computeDigest, computeSelfCost, computeSelfCost, explain, getChildExps, getCluster, getCollationList, getConvention, getCorrelVariable, getDescription, getDigest, getExpectedInputRowType, getId, getInput, getQuery, getRelTypeName, getRows, getRowType, getTable, getTraitSet, getVariablesSet, getVariablesStopped, isDistinct, isKey, isValid, 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.beam.vendor.calcite.v1_20_0.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.beam.vendor.calcite.v1_20_0.org.apache.calcite.plan.RelOptNode

getCluster, getDescription, getDigest, getId, getTraitSet

Constructor Detail

BeamZetaSqlUnnestRel

public BeamZetaSqlUnnestRel(org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.plan.RelOptCluster cluster,
                            org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.plan.RelTraitSet traitSet,
                            org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.rel.RelNode input,
                            org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.rel.type.RelDataType unnestType,
                            java.util.List<java.lang.Integer> unnestIndices)

Method Detail

copy

public ZetaSqlUnnest copy(org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.plan.RelTraitSet traitSet,
                          org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.rel.RelNode input)

Overrides:

copy in class ZetaSqlUnnest

deriveRowType

protected org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.rel.type.RelDataType deriveRowType()

Overrides:

deriveRowType in class ZetaSqlUnnest

estimateNodeStats

public NodeStats estimateNodeStats(org.apache.beam.vendor.calcite.v1_20_0.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.beam.vendor.calcite.v1_20_0.org.apache.calcite.rel.RelNode, org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.rel.metadata.RelMetadataQuery) instead.

Specified by:

estimateNodeStats in interface BeamRelNode

beamComputeSelfCost

public BeamCostModel beamComputeSelfCost(org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.plan.RelOptPlanner planner,
                                         org.apache.beam.vendor.calcite.v1_20_0.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

explainTerms

public org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.rel.RelWriter explainTerms(org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.rel.RelWriter pw)

Overrides:

explainTerms in class ZetaSqlUnnest

buildPTransform

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

Specified by:

buildPTransform in interface BeamRelNode