Package org.apache.calcite.plan

Interface RelMultipleTrait

All Superinterfaces:

Comparable<RelMultipleTrait>, RelTrait

All Known Subinterfaces:

RelCollation, RelDistribution

All Known Implementing Classes:

RelCollationImpl

public interface RelMultipleTrait
extends RelTrait, Comparable<RelMultipleTrait>

Trait for which a given relational expression can have multiple values.

The most common example is sorted-ness (collation). The TIME dimension table might be sorted by [year, month, date] and also by [time_id].

Method Summary

Modifier and Type	Method	Description
boolean	isTop()	Returns whether this trait is satisfied by every instance of the trait (including itself).

Methods inherited from interface java.lang.Comparable

compareTo

Methods inherited from interface org.apache.calcite.plan.RelTrait

apply, equals, getTraitDef, hashCode, isDefault, register, satisfies, toString

Method Details

isTop

boolean isTop()

Returns whether this trait is satisfied by every instance of the trait (including itself).