org.apache.calcite.linq4j

Interface Lookup<K,V>

Type Parameters:

K - Key type

V - Value type

All Superinterfaces:

Enumerable<Grouping<K,V>>, ExtendedEnumerable<Grouping<K,V>>, Iterable<Grouping<K,V>>, Map<K,Enumerable<V>>, RawEnumerable<Grouping<K,V>>

All Known Implementing Classes:

LookupImpl

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

Represents a collection of keys each mapped to one or more values.

Nested Class Summary

Nested classes/interfaces inherited from interface java.util.Map

Map.Entry<K,V>

Method Summary

Methods

Modifier and Type	Method and Description
<TResult> Enumerable<TResult>	applyResultSelector(Function2<K,Enumerable<V>,TResult> resultSelector) Applies a transform function to each key and its associated values and returns the results.

Methods inherited from interface java.util.Map

clear, containsKey, containsValue, entrySet, equals, get, hashCode, isEmpty, keySet, put, putAll, remove, size, values

Methods inherited from interface org.apache.calcite.linq4j.Enumerable

asQueryable

Methods inherited from interface org.apache.calcite.linq4j.RawEnumerable

enumerator

Methods inherited from interface java.lang.Iterable

iterator

Methods inherited from interface 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, first, first, firstOrDefault, firstOrDefault, foreach, groupBy, groupBy, groupBy, groupBy, groupBy, groupBy, groupBy, groupBy, groupBy, groupBy, groupJoin, groupJoin, intersect, intersect, into, join, join, join, 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, 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

Method Detail

applyResultSelector

<TResult> Enumerable<TResult> applyResultSelector(Function2<K,Enumerable<V>,TResult> resultSelector)

Applies a transform function to each key and its associated values and returns the results.

Type Parameters:

TResult - Result type

Parameters:

resultSelector - Result selector

Returns:

Enumerable over results