Package org.apache.drill.exec.planner.physical

Class LimitPrel

java.lang.Object
org.apache.calcite.rel.AbstractRelNode
org.apache.calcite.rel.SingleRel
org.apache.drill.exec.planner.common.DrillLimitRelBase
org.apache.drill.exec.planner.physical.LimitPrel
All Implemented Interfaces:
Cloneable, Iterable<Prel>, org.apache.calcite.plan.RelOptNode, org.apache.calcite.rel.RelNode, DrillRelNode, Prel
public class LimitPrel extends DrillLimitRelBase implements Prel

  • Nested Class Summary

    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.drill.exec.planner.common.DrillLimitRelBase

    fetch, offset

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

    input

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

    digest, id, rowType, traitSet

    Fields inherited from interface org.apache.drill.exec.planner.physical.Prel

    DRILL_PHYSICAL

  • Constructor Summary

    Constructors
    Constructor
    Description
    LimitPrel(org.apache.calcite.plan.RelOptCluster cluster, org.apache.calcite.plan.RelTraitSet traitSet, org.apache.calcite.rel.RelNode child, org.apache.calcite.rex.RexNode offset, org.apache.calcite.rex.RexNode fetch)
     
    LimitPrel(org.apache.calcite.plan.RelOptCluster cluster, org.apache.calcite.plan.RelTraitSet traitSet, org.apache.calcite.rel.RelNode child, org.apache.calcite.rex.RexNode offset, org.apache.calcite.rex.RexNode fetch, boolean pushDown)
     
    LimitPrel(org.apache.calcite.plan.RelOptCluster cluster, org.apache.calcite.plan.RelTraitSet traitSet, org.apache.calcite.rel.RelNode child, org.apache.calcite.rex.RexNode offset, org.apache.calcite.rex.RexNode fetch, boolean pushDown, boolean isPartitioned)
     

  • Method Summary

    Modifier and Type
    Method
    Description
    <T, X, E extends Throwable>
    T
    accept(PrelVisitor<T,X,E> logicalVisitor, X value)
     
    org.apache.calcite.rel.RelNode
    copy(org.apache.calcite.plan.RelTraitSet traitSet, List<org.apache.calcite.rel.RelNode> inputs)
     
    org.apache.calcite.rel.RelNode
    copy(org.apache.calcite.plan.RelTraitSet traitSet, List<org.apache.calcite.rel.RelNode> inputs, boolean pushDown)
     
    org.apache.calcite.rel.RelWriter
    explainTerms(org.apache.calcite.rel.RelWriter pw)
     
    BatchSchema.SelectionVectorMode
    getEncoding()
    A Prel's own SelectionVector mode - i.e whether it generates an SV2, SV4 or None
    PhysicalOperator
    getPhysicalOperator(PhysicalPlanCreator creator)
     
    BatchSchema.SelectionVectorMode[]
    getSupportedEncodings()
    Supported 'encodings' of a Prel indicates what are the acceptable modes of SelectionVector of its child Prel
    Iterator<Prel>
    iterator()
     
    boolean
    needsFinalColumnReordering()
     
    Prel
    prepareForLateralUnnestPipeline(List<org.apache.calcite.rel.RelNode> children)
    If the operator is in Lateral/Unnest pipeline, then it generates a new operator which knows how to process the rows accordingly during execution.

    Methods inherited from class org.apache.drill.exec.planner.common.DrillLimitRelBase

    computeSelfCost, estimateRowCount, getFetch, getOffset, isPushDown

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

    childrenAccept, deriveRowType, getInput, getInputs, replaceInput

    Methods inherited from class 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, isValid, 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 java.lang.Iterable

    forEach, spliterator

    Methods inherited from interface 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.calcite.plan.RelOptNode

    getCluster, getDescription, getId, getTraitSet

  • Constructor Details

    • LimitPrel

      public LimitPrel(org.apache.calcite.plan.RelOptCluster cluster, org.apache.calcite.plan.RelTraitSet traitSet, org.apache.calcite.rel.RelNode child, org.apache.calcite.rex.RexNode offset, org.apache.calcite.rex.RexNode fetch)

    • LimitPrel

      public LimitPrel(org.apache.calcite.plan.RelOptCluster cluster, org.apache.calcite.plan.RelTraitSet traitSet, org.apache.calcite.rel.RelNode child, org.apache.calcite.rex.RexNode offset, org.apache.calcite.rex.RexNode fetch, boolean pushDown)

    • LimitPrel

      public LimitPrel(org.apache.calcite.plan.RelOptCluster cluster, org.apache.calcite.plan.RelTraitSet traitSet, org.apache.calcite.rel.RelNode child, org.apache.calcite.rex.RexNode offset, org.apache.calcite.rex.RexNode fetch, boolean pushDown, boolean isPartitioned)

  • Method Details

    • copy

      public org.apache.calcite.rel.RelNode copy(org.apache.calcite.plan.RelTraitSet traitSet, List<org.apache.calcite.rel.RelNode> inputs)
      Specified by:
      copy in interface org.apache.calcite.rel.RelNode
      Overrides:
      copy in class org.apache.calcite.rel.AbstractRelNode

    • copy

      public org.apache.calcite.rel.RelNode copy(org.apache.calcite.plan.RelTraitSet traitSet, List<org.apache.calcite.rel.RelNode> inputs, boolean pushDown)
      Specified by:
      copy in class DrillLimitRelBase

    • getPhysicalOperator

      public PhysicalOperator getPhysicalOperator(PhysicalPlanCreator creator) throws IOException
      Specified by:
      getPhysicalOperator in interface Prel
      Throws:
      IOException

    • iterator

      public Iterator<Prel> iterator()
      Specified by:
      iterator in interface Iterable<Prel>

    • accept

      public <T, X, E extends Throwable> T accept(PrelVisitor<T,X,E> logicalVisitor, X value) throws E
      Specified by:
      accept in interface Prel
      Throws:
      E

    • explainTerms

      public org.apache.calcite.rel.RelWriter explainTerms(org.apache.calcite.rel.RelWriter pw)
      Overrides:
      explainTerms in class DrillLimitRelBase

    • getSupportedEncodings

      public BatchSchema.SelectionVectorMode[] getSupportedEncodings()
      Description copied from interface: Prel
      Supported 'encodings' of a Prel indicates what are the acceptable modes of SelectionVector of its child Prel
      Specified by:
      getSupportedEncodings in interface Prel

    • getEncoding

      public BatchSchema.SelectionVectorMode getEncoding()
      Description copied from interface: Prel
      A Prel's own SelectionVector mode - i.e whether it generates an SV2, SV4 or None
      Specified by:
      getEncoding in interface Prel

    • needsFinalColumnReordering

      public boolean needsFinalColumnReordering()
      Specified by:
      needsFinalColumnReordering in interface Prel

    • prepareForLateralUnnestPipeline

      public Prel prepareForLateralUnnestPipeline(List<org.apache.calcite.rel.RelNode> children)
      Description copied from interface: Prel
      If the operator is in Lateral/Unnest pipeline, then it generates a new operator which knows how to process the rows accordingly during execution. eg: TopNPrel -> SortPrel and LimitPrel Other operators like FilterPrel, ProjectPrel etc will add an implicit row id to the output.
      Specified by:
      prepareForLateralUnnestPipeline in interface Prel