org.apache.druid.sql.calcite.rel

Class Sorting

java.lang.Object

org.apache.druid.sql.calcite.rel.Sorting

public class Sorting
extends Object

Represents Druid's concept of sorting and limiting, including post-sort projections. The sorting and limiting piece may map onto multiple Druid concepts: LimitSpec (for groupBy), TopNMetricSpec and threshold (for topN), "descending" (for timeseries), or ScanQuery.Order (for scan). The post-sort projections will map onto either post-aggregations (for query types that aggregate) or virtual columns (for query types that don't). This corresponds to a Calcite Sort + optional Project.

Method Summary

Modifier and Type	Method and Description
static Sorting	create(List<OrderByColumnSpec> orderBys, Long limit, Projection projection)
boolean	equals(Object o)
Long	getLimit()
List<OrderByColumnSpec>	getOrderBys()
Projection	getProjection()
org.apache.druid.sql.calcite.rel.Sorting.SortKind	getSortKind(String timeColumn)
int	hashCode()
boolean	isLimited()
String	toString()

Methods inherited from class java.lang.Object

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

Method Detail

create

public static Sorting create(List<OrderByColumnSpec> orderBys,
                             @Nullable
                             Long limit,
                             @Nullable
                             Projection projection)

getSortKind

public org.apache.druid.sql.calcite.rel.Sorting.SortKind getSortKind(String timeColumn)

getOrderBys

public List<OrderByColumnSpec> getOrderBys()

getProjection

@Nullable
public Projection getProjection()

isLimited

public boolean isLimited()

getLimit

@Nullable
public Long getLimit()

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

toString

public String toString()

Overrides:

toString in class Object