Package io.openems.common.utils

Class CollectorUtils

java.lang.Object

io.openems.common.utils.CollectorUtils

public final class CollectorUtils
extends Object

Method Summary

Modifier and Type	Method	Description
static final <INPUT, FIRST_KEY, SECOND_KEY, VALUE> Collector<INPUT,?,Map<FIRST_KEY,Map<SECOND_KEY,VALUE>>>	toDoubleMap(Function<INPUT,FIRST_KEY> firstKeyMapper, Function<INPUT,SECOND_KEY> secondKeyMapper, Function<INPUT,VALUE> valueMapper)	Creates a Collector which collects the given input to a Map where the value is also a Map.
static final <KEY extends Comparable<KEY>, KEY2 extends Comparable<KEY2>, VALUE> Collector<Map.Entry<KEY,Map<KEY2,VALUE>>,?,com.google.common.collect.TreeBasedTable<KEY,KEY2,VALUE>>	toTreeBasedTable()	Creates a Collector which collects the given input to a TreeBasedTable.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Details

toDoubleMap

public static final <INPUT,
FIRST_KEY,
SECOND_KEY,
VALUE>
Collector<INPUT,?,Map<FIRST_KEY,Map<SECOND_KEY,VALUE>>> toDoubleMap(Function<INPUT,FIRST_KEY> firstKeyMapper,
 Function<INPUT,SECOND_KEY> secondKeyMapper,
 Function<INPUT,VALUE> valueMapper)

Creates a Collector which collects the given input to a Map where the value is also a Map.

Type Parameters:

INPUT - the input of the collection

FIRST_KEY - the key of the first map

SECOND_KEY - the key of the second map

VALUE - the value of the second map

Parameters:

firstKeyMapper - the mapper-function of the first key

secondKeyMapper - the mapper-function of the second key

valueMapper - the mapper-function of the value

Returns:

the Collector

toTreeBasedTable

public static final <KEY extends Comparable<KEY>,
KEY2 extends Comparable<KEY2>,
VALUE>
Collector<Map.Entry<KEY,Map<KEY2,VALUE>>,?,com.google.common.collect.TreeBasedTable<KEY,KEY2,VALUE>> toTreeBasedTable()

Creates a Collector which collects the given input to a TreeBasedTable.

Type Parameters:

KEY - the type of the first map key

KEY2 - the type of the second map key

VALUE - the type of the value

Returns:

the Collector