org.apache.calcite.plan

Interface RelMultipleTrait

All Superinterfaces:

Comparable<RelMultipleTrait>, RelTrait

All Known Subinterfaces:

RelCollation

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

Methods

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

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

equals, getTraitDef, hashCode, register, satisfies, toString

Methods inherited from interface java.lang.Comparable

compareTo

Method Detail

isTop

boolean isTop()

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