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

Class BeamWindowRel

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.vendor.calcite.v1_20_0.org.apache.calcite.rel.core.Window

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

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 BeamWindowRel
extends org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.rel.core.Window
implements BeamRelNode

BeamRelNode to replace a Window node.

The following types of Analytic Functions are supported:

 SELECT agg(c) over () FROM t
 SELECT agg(c1) over (PARTITION BY c2 ORDER BY c3 ROWS BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW) FROM t
 SELECT agg(c1) over (PARTITION BY c2 ORDER BY c3 RANGE BETWEEN 1 PRECEDING AND 1 FOLLOWING) FROM t
 

Constraints

• Only Aggregate Analytic Functions are available.

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.rel.core.Window

org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.rel.core.Window.Group, org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.rel.core.Window.RexWinAggCall

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.vendor.calcite.v1_20_0.org.apache.calcite.rel.core.Window

constants, groups

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

BeamWindowRel(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, java.util.List<org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.rex.RexLiteral> constants, org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.rel.type.RelDataType rowType, java.util.List<org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.rel.core.Window.Group> groups)

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) A dummy cost computation based on a fixed multiplier.
PTransform<PCollectionList<Row>,PCollection<Row>>	buildPTransform()
org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.rel.RelNode	copy(org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.plan.RelTraitSet traitSet, java.util.List<org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.rel.RelNode> inputs)
BeamWindowRel	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, java.util.List<org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.rex.RexLiteral> constants, org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.rel.type.RelDataType rowType, java.util.List<org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.rel.core.Window.Group> groups)
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.

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

computeSelfCost, explainTerms, getCollation, getConstants, getProjectOrdinals, isValid

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

childrenAccept, deriveRowType, 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, 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.beam.vendor.calcite.v1_20_0.org.apache.calcite.rel.RelNode

accept, accept, childrenAccept, collectVariablesSet, collectVariablesUsed, computeSelfCost, 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.beam.vendor.calcite.v1_20_0.org.apache.calcite.plan.RelOptNode

getCluster, getDescription, getDigest, getId, getTraitSet

Constructor Detail

BeamWindowRel

public BeamWindowRel(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,
                     java.util.List<org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.rex.RexLiteral> constants,
                     org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.rel.type.RelDataType rowType,
                     java.util.List<org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.rel.core.Window.Group> groups)

Method Detail

buildPTransform

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

Specified by:

buildPTransform in interface BeamRelNode

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)

A dummy cost computation based on a fixed multiplier.

Since, there are not additional LogicalWindow to BeamWindowRel strategies, the result of this cost computation has no impact in the query execution plan.

Specified by:

beamComputeSelfCost in interface BeamRelNode

copy

public org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.rel.RelNode copy(org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.plan.RelTraitSet traitSet,
                                                                                  java.util.List<org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.rel.RelNode> inputs)

Specified by:

copy in interface org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.rel.RelNode

Overrides:

copy in class org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.rel.AbstractRelNode

copy

public BeamWindowRel 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,
                          java.util.List<org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.rex.RexLiteral> constants,
                          org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.rel.type.RelDataType rowType,
                          java.util.List<org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.rel.core.Window.Group> groups)