org.apache.drill.exec.planner.physical

Class MetadataAggPrule.NamedRelCollation

java.lang.Object

org.apache.calcite.rel.RelCollationImpl

org.apache.drill.exec.planner.physical.MetadataAggPrule.NamedRelCollation

All Implemented Interfaces:

Comparable<org.apache.calcite.plan.RelMultipleTrait>, org.apache.calcite.plan.RelMultipleTrait, org.apache.calcite.plan.RelTrait, org.apache.calcite.rel.RelCollation

Enclosing class:

MetadataAggPrule

public static class MetadataAggPrule.NamedRelCollation
extends org.apache.calcite.rel.RelCollationImpl

Implementation of RelCollationImpl with field name. Stores RelFieldCollation list and corresponding field names to be used in sort operators. Field name is required for the case of dynamic schema discovering when field is not present in rel data type at planning time.

Field Summary

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

EMPTY, PRESERVE

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	NamedRelCollation(List<org.apache.calcite.rel.RelFieldCollation> fieldCollations, List<String> names)

Method Summary

Modifier and Type	Method and Description
String	getName(int collationIndex)

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

compareTo, createSingleton, equal, equals, getFieldCollations, getTraitDef, hashCode, isTop, isValid, of, of, ordinals, register, satisfies, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

NamedRelCollation

protected NamedRelCollation(List<org.apache.calcite.rel.RelFieldCollation> fieldCollations,
                            List<String> names)

Method Detail

getName

public String getName(int collationIndex)