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

Class BeamWindowRel

java.lang.Object
org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.rel.AbstractRelNode
org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.rel.SingleRel
org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.rel.core.Window
org.apache.beam.sdk.extensions.sql.impl.rel.BeamWindowRel
All Implemented Interfaces:
Cloneable, BeamRelNode, org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.plan.RelOptNode, org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.rel.RelNode
public class BeamWindowRel extends org.apache.beam.vendor.calcite.v1_28_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_28_0.org.apache.calcite.rel.core.Window

    org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.rel.core.Window.Group, org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.rel.core.Window.RexWinAggCall

    Nested classes/interfaces inherited from interface org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.rel.RelNode

    org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.rel.RelNode.Context

  • Field Summary

    Fields inherited from class org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.rel.core.Window

    constants, groups

    Fields inherited from class org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.rel.SingleRel

    input

    Fields inherited from class org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.rel.AbstractRelNode

    digest, id, rowType, traitSet

  • Constructor Summary

    Constructors
    Constructor
    Description
    BeamWindowRel(org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.plan.RelOptCluster cluster, org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.plan.RelTraitSet traitSet, org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.rel.RelNode input, List<org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.rex.RexLiteral> constants, org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.rel.type.RelDataType rowType, List<org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.rel.core.Window.Group> groups)
     

  • Method Summary

    Modifier and Type
    Method
    Description
    BeamCostModel
    beamComputeSelfCost(org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.plan.RelOptPlanner planner, BeamRelMetadataQuery mq)
    A dummy cost computation based on a fixed multiplier.
    PTransform<PCollectionList<Row>,PCollection<Row>>
    buildPTransform()
     
    org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.rel.RelNode
    copy(org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.plan.RelTraitSet traitSet, List<org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.rel.RelNode> inputs)
     
    BeamWindowRel
    copy(org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.plan.RelTraitSet traitSet, org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.rel.RelNode input, List<org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.rex.RexLiteral> constants, org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.rel.type.RelDataType rowType, List<org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.rel.core.Window.Group> groups)
     
    NodeStats
    estimateNodeStats(BeamRelMetadataQuery 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_28_0.org.apache.calcite.rel.core.Window

    computeSelfCost, explainTerms, getCollation, getConstants, getProjectOrdinals, isValid

    Methods inherited from class org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.rel.SingleRel

    childrenAccept, deriveRowType, estimateRowCount, getInput, getInputs, replaceInput

    Methods inherited from class org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.rel.AbstractRelNode

    accept, accept, collectVariablesSet, collectVariablesUsed, deepEquals, deepHashCode, equals, explain, getCluster, getConvention, getCorrelVariable, getDescription, getDigest, getExpectedInputRowType, getId, getInput, getRelDigest, getRelTypeName, getRowType, getTable, getTraitSet, getVariablesSet, hashCode, isEnforcer, 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.beam.sdk.extensions.sql.impl.rel.BeamRelNode

    buildPTransform, getPCollectionInputs, getPipelineOptions, isBounded, withErrorsTransformer

    Methods inherited from interface org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.rel.RelNode

    accept, accept, childrenAccept, collectVariablesSet, collectVariablesUsed, computeSelfCost, deepEquals, deepHashCode, estimateRowCount, explain, explain, fieldIsNullable, getConvention, getCorrelVariable, getDigest, getExpectedInputRowType, getInput, getInputs, getRelDigest, getRelTypeName, getRowType, getTable, getVariablesSet, isEnforcer, isValid, metadata, onRegister, recomputeDigest, register, replaceInput

    Methods inherited from interface org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.plan.RelOptNode

    getCluster, getDescription, getId, getTraitSet

  • Constructor Details

    • BeamWindowRel

      public BeamWindowRel(org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.plan.RelOptCluster cluster, org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.plan.RelTraitSet traitSet, org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.rel.RelNode input, List<org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.rex.RexLiteral> constants, org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.rel.type.RelDataType rowType, List<org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.rel.core.Window.Group> groups)

  • Method Details

    • buildPTransform

      public PTransform<PCollectionList<Row>,PCollection<Row>> buildPTransform()
      Specified by:
      buildPTransform in interface BeamRelNode

    • estimateNodeStats

      public NodeStats estimateNodeStats(BeamRelMetadataQuery 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
      invalid reference 
      org.apache.beam.sdk.extensions.sql.impl.rel.BeamSqlRelUtils#getNodeStats(org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.rel.RelNode, org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.rel.metadata.RelMetadataQuery)
      instead.
      Specified by:
      estimateNodeStats in interface BeamRelNode

    • beamComputeSelfCost

      public BeamCostModel beamComputeSelfCost(org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.plan.RelOptPlanner planner, BeamRelMetadataQuery 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_28_0.org.apache.calcite.rel.RelNode copy(org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.plan.RelTraitSet traitSet, List<org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.rel.RelNode> inputs)
      Specified by:
      copy in interface org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.rel.RelNode
      Overrides:
      copy in class org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.rel.AbstractRelNode

    • copy

      public BeamWindowRel copy(org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.plan.RelTraitSet traitSet, org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.rel.RelNode input, List<org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.rex.RexLiteral> constants, org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.rel.type.RelDataType rowType, List<org.apache.beam.vendor.calcite.v1_28_0.org.apache.calcite.rel.core.Window.Group> groups)