org.apache.calcite.linq4j

接口 Grouping<K,V>

类型参数:

K - Key type

V - Element type

所有超级接口:

Enumerable<V>, ExtendedEnumerable<V>, Iterable<V>, RawEnumerable<V>

public interface Grouping<K,V>
extends Enumerable<V>

Represents a collection of objects that have a common key.

方法概要

限定符和类型	方法和说明
K	getKey() Gets the key of this Grouping.

从接口继承的方法 org.apache.calcite.linq4j.Enumerable

asQueryable

从接口继承的方法 org.apache.calcite.linq4j.RawEnumerable

enumerator

从接口继承的方法 java.lang.Iterable

forEach, iterator, spliterator

从接口继承的方法 org.apache.calcite.linq4j.ExtendedEnumerable

aggregate, aggregate, aggregate, all, any, any, asEnumerable, average, average, average, average, average, average, average, average, average, average, cast, concat, contains, contains, correlateJoin, count, count, defaultIfEmpty, defaultIfEmpty, distinct, distinct, elementAt, elementAtOrDefault, except, except, except, except, first, first, firstOrDefault, firstOrDefault, foreach, groupBy, groupBy, groupBy, groupBy, groupBy, groupBy, groupBy, groupBy, groupBy, groupBy, groupJoin, groupJoin, hashJoin, hashJoin, hashJoin, hashJoin, intersect, intersect, intersect, intersect, into, last, last, lastOrDefault, lastOrDefault, longCount, longCount, max, max, max, max, max, max, max, max, max, max, max, max, min, min, min, min, min, min, min, min, min, min, min, min, ofType, orderBy, orderBy, orderByDescending, orderByDescending, removeAll, reverse, select, select, selectMany, selectMany, selectMany, selectMany, sequenceEqual, sequenceEqual, single, single, singleOrDefault, singleOrDefault, skip, skipWhile, skipWhile, sum, sum, sum, sum, sum, sum, sum, sum, sum, sum, take, takeWhile, takeWhile, toList, toLookup, toLookup, toLookup, toLookup, toMap, toMap, toMap, toMap, union, union, where, where, zip

方法详细资料

getKey

K getKey()

Gets the key of this Grouping.