RelMultipleTrait (Apache Calcite API)

All Superinterfaces:

java.lang.Comparable<RelMultipleTrait>, RelTrait

All Known Subinterfaces:

RelCollation, RelDistribution

All Known Implementing Classes:

RelCollationImpl, RelDistributions.RelDistributionImpl
```
public interface RelMultipleTrait
extends RelTrait, java.lang.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

All Methods Instance Methods Abstract Methods
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
equals, getTraitDef, hashCode, register, satisfies, toString

- Method Detail
  - isTop
```
boolean isTop()
```
    Returns whether this trait is satisfied by every instance of the trait (including itself).