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
 

Field Summary

Fields

Modifier and Type	Field and Description
static ConvertMetadataAggregateToDirectScanRule	INSTANCE

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

description, operands, relBuilderFactory

Constructor Summary

Constructors

Constructor and Description
ConvertMetadataAggregateToDirectScanRule()

Method Summary

Modifier and Type	Method and 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 Detail

INSTANCE

public static final ConvertMetadataAggregateToDirectScanRule INSTANCE

Constructor Detail

ConvertMetadataAggregateToDirectScanRule

public ConvertMetadataAggregateToDirectScanRule()

Method Detail

onMatch

public void onMatch(org.apache.calcite.plan.RelOptRuleCall call)

Specified by:

onMatch in class org.apache.calcite.plan.RelOptRule