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

Class BeamWindowRel

  • All Implemented Interfaces:
    java.lang.Cloneable, BeamRelNode, org.apache.beam.vendor.calcite.v1_40_0.org.apache.calcite.plan.RelOptNode, org.apache.beam.vendor.calcite.v1_40_0.org.apache.calcite.rel.hint.Hintable, org.apache.beam.vendor.calcite.v1_40_0.org.apache.calcite.rel.RelNode
    public class BeamWindowRel
extends org.apache.beam.vendor.calcite.v1_40_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_40_0.org.apache.calcite.rel.core.Window

        org.apache.beam.vendor.calcite.v1_40_0.org.apache.calcite.rel.core.Window.Group, org.apache.beam.vendor.calcite.v1_40_0.org.apache.calcite.rel.core.Window.RexWinAggCall

      • Nested classes/interfaces inherited from interface org.apache.beam.vendor.calcite.v1_40_0.org.apache.calcite.rel.RelNode

        org.apache.beam.vendor.calcite.v1_40_0.org.apache.calcite.rel.RelNode.Context

    • Field Summary

      • Fields inherited from class org.apache.beam.vendor.calcite.v1_40_0.org.apache.calcite.rel.core.Window

        constants, groups, hints

      • Fields inherited from class org.apache.beam.vendor.calcite.v1_40_0.org.apache.calcite.rel.SingleRel

        input

      • Fields inherited from class org.apache.beam.vendor.calcite.v1_40_0.org.apache.calcite.rel.AbstractRelNode

        digest, id, rowType, traitSet

    • Constructor Summary

      Constructors 
      Constructor Description
      BeamWindowRel​(org.apache.beam.vendor.calcite.v1_40_0.org.apache.calcite.plan.RelOptCluster cluster, org.apache.beam.vendor.calcite.v1_40_0.org.apache.calcite.plan.RelTraitSet traitSet, org.apache.beam.vendor.calcite.v1_40_0.org.apache.calcite.rel.RelNode input, java.util.List<org.apache.beam.vendor.calcite.v1_40_0.org.apache.calcite.rex.RexLiteral> constants, org.apache.beam.vendor.calcite.v1_40_0.org.apache.calcite.rel.type.RelDataType rowType, java.util.List<org.apache.beam.vendor.calcite.v1_40_0.org.apache.calcite.rel.core.Window.Group> groups)  

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      BeamCostModel beamComputeSelfCost​(org.apache.beam.vendor.calcite.v1_40_0.org.apache.calcite.plan.RelOptPlanner planner, BeamRelMetadataQuery mq)
      A dummy cost computation based on a fixed multiplier.
      org.apache.beam.sdk.transforms.PTransform<org.apache.beam.sdk.values.PCollectionList<org.apache.beam.sdk.values.Row>,​org.apache.beam.sdk.values.PCollection<org.apache.beam.sdk.values.Row>> buildPTransform()  
      org.apache.beam.vendor.calcite.v1_40_0.org.apache.calcite.rel.core.Window copy​(java.util.List<org.apache.beam.vendor.calcite.v1_40_0.org.apache.calcite.rex.RexLiteral> constants)  
      org.apache.beam.vendor.calcite.v1_40_0.org.apache.calcite.rel.RelNode copy​(org.apache.beam.vendor.calcite.v1_40_0.org.apache.calcite.plan.RelTraitSet traitSet, java.util.List<org.apache.beam.vendor.calcite.v1_40_0.org.apache.calcite.rel.RelNode> inputs)  
      BeamWindowRel copy​(org.apache.beam.vendor.calcite.v1_40_0.org.apache.calcite.plan.RelTraitSet traitSet, org.apache.beam.vendor.calcite.v1_40_0.org.apache.calcite.rel.RelNode input, java.util.List<org.apache.beam.vendor.calcite.v1_40_0.org.apache.calcite.rex.RexLiteral> constants, org.apache.beam.vendor.calcite.v1_40_0.org.apache.calcite.rel.type.RelDataType rowType, java.util.List<org.apache.beam.vendor.calcite.v1_40_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_40_0.org.apache.calcite.rel.core.Window

        computeSelfCost, explainTerms, getCollation, getConstants, getHints, getProjectOrdinals, isValid

      • Methods inherited from class org.apache.beam.vendor.calcite.v1_40_0.org.apache.calcite.rel.SingleRel

        childrenAccept, deriveRowType, estimateRowCount, getInput, getInputs, replaceInput

      • Methods inherited from class org.apache.beam.vendor.calcite.v1_40_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.vendor.calcite.v1_40_0.org.apache.calcite.rel.hint.Hintable

        attachHints, withHints

      • Methods inherited from interface org.apache.beam.vendor.calcite.v1_40_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, stripped

      • Methods inherited from interface org.apache.beam.vendor.calcite.v1_40_0.org.apache.calcite.plan.RelOptNode

        getCluster, getDescription, getId, getTraitSet

    • Constructor Detail

      • BeamWindowRel

        public BeamWindowRel​(org.apache.beam.vendor.calcite.v1_40_0.org.apache.calcite.plan.RelOptCluster cluster,
                     org.apache.beam.vendor.calcite.v1_40_0.org.apache.calcite.plan.RelTraitSet traitSet,
                     org.apache.beam.vendor.calcite.v1_40_0.org.apache.calcite.rel.RelNode input,
                     java.util.List<org.apache.beam.vendor.calcite.v1_40_0.org.apache.calcite.rex.RexLiteral> constants,
                     org.apache.beam.vendor.calcite.v1_40_0.org.apache.calcite.rel.type.RelDataType rowType,
                     java.util.List<org.apache.beam.vendor.calcite.v1_40_0.org.apache.calcite.rel.core.Window.Group> groups)

    • Method Detail

      • buildPTransform

        public org.apache.beam.sdk.transforms.PTransform<org.apache.beam.sdk.values.PCollectionList<org.apache.beam.sdk.values.Row>,​org.apache.beam.sdk.values.PCollection<org.apache.beam.sdk.values.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 org.apache.beam.sdk.extensions.sql.impl.rel.BeamSqlRelUtils#getNodeStats( org.apache.beam.vendor.calcite.v1_40_0.org.apache.calcite.rel.RelNode, org.apache.beam.vendor.calcite.v1_40_0.org.apache.calcite.rel.metadata.RelMetadataQuery) instead.
        Specified by:
        estimateNodeStats in interface BeamRelNode

      • beamComputeSelfCost

        public BeamCostModel beamComputeSelfCost​(org.apache.beam.vendor.calcite.v1_40_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_40_0.org.apache.calcite.rel.RelNode copy​(org.apache.beam.vendor.calcite.v1_40_0.org.apache.calcite.plan.RelTraitSet traitSet,
                                                                                  java.util.List<org.apache.beam.vendor.calcite.v1_40_0.org.apache.calcite.rel.RelNode> inputs)
        Specified by:
        copy in interface org.apache.beam.vendor.calcite.v1_40_0.org.apache.calcite.rel.RelNode
        Overrides:
        copy in class org.apache.beam.vendor.calcite.v1_40_0.org.apache.calcite.rel.AbstractRelNode

      • copy

        public org.apache.beam.vendor.calcite.v1_40_0.org.apache.calcite.rel.core.Window copy​(java.util.List<org.apache.beam.vendor.calcite.v1_40_0.org.apache.calcite.rex.RexLiteral> constants)
        Specified by:
        copy in class org.apache.beam.vendor.calcite.v1_40_0.org.apache.calcite.rel.core.Window

      • copy

        public BeamWindowRel copy​(org.apache.beam.vendor.calcite.v1_40_0.org.apache.calcite.plan.RelTraitSet traitSet,
                          org.apache.beam.vendor.calcite.v1_40_0.org.apache.calcite.rel.RelNode input,
                          java.util.List<org.apache.beam.vendor.calcite.v1_40_0.org.apache.calcite.rex.RexLiteral> constants,
                          org.apache.beam.vendor.calcite.v1_40_0.org.apache.calcite.rel.type.RelDataType rowType,
                          java.util.List<org.apache.beam.vendor.calcite.v1_40_0.org.apache.calcite.rel.core.Window.Group> groups)