Package org.apache.drill.exec.planner.logical

Class ConvertMetadataAggregateToDirectScanRule

java.lang.Object
org.apache.calcite.plan.RelOptRule
org.apache.drill.exec.planner.logical.ConvertMetadataAggregateToDirectScanRule
public class ConvertMetadataAggregateToDirectScanRule extends org.apache.calcite.plan.RelOptRule
Rule which converts 
   MetadataAggRel(metadataLevel=ROW_GROUP)
   \
   DrillScanRel

plan into 

   DrillDirectScanRel
where DrillDirectScanRel is populated with row group metadata.

For the case when aggregate level is not ROW_GROUP, resulting plan will be the following: 

   MetadataAggRel(metadataLevel=FILE (or another non-ROW_GROUP value), createNewAggregations=false)
   \
   DrillDirectScanRel

  • Nested Class Summary

    Nested classes/interfaces inherited from class org.apache.calcite.plan.RelOptRule

    org.apache.calcite.plan.RelOptRule.ConverterRelOptRuleOperand

  • Field Summary

    Fields
    Modifier and Type
    Field
    Description
    static final ConvertMetadataAggregateToDirectScanRule
    INSTANCE
     

    Fields inherited from class org.apache.calcite.plan.RelOptRule

    description, operands, relBuilderFactory

  • Constructor Summary

    Constructors
    Constructor
    Description
    ConvertMetadataAggregateToDirectScanRule()
     

  • Method Summary

    Modifier and Type
    Method
    Description
    void
    onMatch(org.apache.calcite.plan.RelOptRuleCall call)
     

    Methods inherited from class org.apache.calcite.plan.RelOptRule

    any, convert, convert, convertList, convertOperand, convertOperand, equals, equals, getOperand, getOperands, getOutConvention, getOutTrait, hashCode, matches, none, operand, operand, operand, operand, operand, operandJ, operandJ, some, toString, unordered

    Methods inherited from class java.lang.Object

    clone, finalize, getClass, notify, notifyAll, wait, wait, wait

  • Field Details

  • Constructor Details

    • ConvertMetadataAggregateToDirectScanRule

      public ConvertMetadataAggregateToDirectScanRule()

  • Method Details

    • onMatch

      public void onMatch(org.apache.calcite.plan.RelOptRuleCall call)
      Specified by:
      onMatch in class org.apache.calcite.plan.RelOptRule