Module jpastreamer.field

Package com.speedment.jpastreamer.field.collector

Class FieldCollectors

java.lang.Object

com.speedment.jpastreamer.field.collector.FieldCollectors

public final class FieldCollectors
extends Object

A number of collectors specialized for entities. These are inspired by the Collectors class in the java standard libraries.

Since:

3.0.2

Author:

Emil Forslund

Method Summary

Modifier and Type	Method	Description
static <ENTITY> Collector<ENTITY,?,Map<Boolean,List<ENTITY>>>	groupingBy(BooleanField<ENTITY> field)
static <ENTITY, A, R> Collector<ENTITY,?,Map<Boolean,R>>	groupingBy(BooleanField<ENTITY> field, Collector<ENTITY,A,R> downstream)
static <ENTITY> Collector<ENTITY,?,Map<Byte,List<ENTITY>>>	groupingBy(ByteField<ENTITY> field)
static <ENTITY, A, R> Collector<ENTITY,?,Map<Byte,R>>	groupingBy(ByteField<ENTITY> field, Collector<ENTITY,A,R> downstream)
static <ENTITY> Collector<ENTITY,?,Map<Character,List<ENTITY>>>	groupingBy(CharField<ENTITY> field)
static <ENTITY, A, R> Collector<ENTITY,?,Map<Character,R>>	groupingBy(CharField<ENTITY> field, Collector<ENTITY,A,R> downstream)
static <ENTITY> Collector<ENTITY,?,Map<Double,List<ENTITY>>>	groupingBy(DoubleField<ENTITY> field)
static <ENTITY, A, R> Collector<ENTITY,?,Map<Double,R>>	groupingBy(DoubleField<ENTITY> field, Collector<ENTITY,A,R> downstream)
static <T, K, D, A, M extends Map<K, D>> FieldCollector<T,?,M>	groupingBy(Field<T> field, Function<T,K> classifier, Supplier<M> mapFactory, Collector<? super T,A,D> downstream)
static <ENTITY> Collector<ENTITY,?,Map<Float,List<ENTITY>>>	groupingBy(FloatField<ENTITY> field)
static <ENTITY, A, R> Collector<ENTITY,?,Map<Float,R>>	groupingBy(FloatField<ENTITY> field, Collector<ENTITY,A,R> downstream)
static <ENTITY> Collector<ENTITY,?,Map<Integer,List<ENTITY>>>	groupingBy(IntField<ENTITY> field)
static <ENTITY, A, R> Collector<ENTITY,?,Map<Integer,R>>	groupingBy(IntField<ENTITY> field, Collector<ENTITY,A,R> downstream)
static <ENTITY> Collector<ENTITY,?,Map<Long,List<ENTITY>>>	groupingBy(LongField<ENTITY> field)
static <ENTITY, A, R> Collector<ENTITY,?,Map<Long,R>>	groupingBy(LongField<ENTITY> field, Collector<ENTITY,A,R> downstream)
static <ENTITY, T> Collector<ENTITY,?,Map<T,List<ENTITY>>>	groupingBy(ReferenceField<ENTITY,T> field)
static <ENTITY, T, A, R> Collector<ENTITY,?,Map<T,R>>	groupingBy(ReferenceField<ENTITY,T> field, Collector<ENTITY,A,R> downstream)
static <ENTITY> Collector<ENTITY,?,Map<Short,List<ENTITY>>>	groupingBy(ShortField<ENTITY> field)
static <ENTITY, A, R> Collector<ENTITY,?,Map<Short,R>>	groupingBy(ShortField<ENTITY> field, Collector<ENTITY,A,R> downstream)
static <ENTITY> Collector<ENTITY,?,Map<String,List<ENTITY>>>	groupingBy(StringField<ENTITY> field)
static <ENTITY, A, R> Collector<ENTITY,?,Map<String,R>>	groupingBy(StringField<ENTITY> field, Collector<ENTITY,A,R> downstream)

Methods inherited from class java.lang.Object

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

Method Details

groupingBy

public static <ENTITY>
Collector<ENTITY,?,Map<Long,List<ENTITY>>> groupingBy(LongField<ENTITY> field)

groupingBy

public static <ENTITY>
Collector<ENTITY,?,Map<Integer,List<ENTITY>>> groupingBy(IntField<ENTITY> field)

groupingBy

public static <ENTITY>
Collector<ENTITY,?,Map<Short,List<ENTITY>>> groupingBy(ShortField<ENTITY> field)

groupingBy

public static <ENTITY>
Collector<ENTITY,?,Map<Byte,List<ENTITY>>> groupingBy(ByteField<ENTITY> field)

groupingBy

public static <ENTITY>
Collector<ENTITY,?,Map<Double,List<ENTITY>>> groupingBy(DoubleField<ENTITY> field)

groupingBy

public static <ENTITY>
Collector<ENTITY,?,Map<Float,List<ENTITY>>> groupingBy(FloatField<ENTITY> field)

groupingBy

public static <ENTITY>
Collector<ENTITY,?,Map<Boolean,List<ENTITY>>> groupingBy(BooleanField<ENTITY> field)

groupingBy

public static <ENTITY>
Collector<ENTITY,?,Map<Character,List<ENTITY>>> groupingBy(CharField<ENTITY> field)

groupingBy

public static <ENTITY>
Collector<ENTITY,?,Map<String,List<ENTITY>>> groupingBy(StringField<ENTITY> field)

groupingBy

public static <ENTITY,
T>
Collector<ENTITY,?,Map<T,List<ENTITY>>> groupingBy(ReferenceField<ENTITY,T> field)

groupingBy

public static <ENTITY,
A,
R>
Collector<ENTITY,?,Map<Long,R>> groupingBy(LongField<ENTITY> field,
 Collector<ENTITY,A,R> downstream)

groupingBy

public static <ENTITY,
A,
R>
Collector<ENTITY,?,Map<Integer,R>> groupingBy(IntField<ENTITY> field,
 Collector<ENTITY,A,R> downstream)

groupingBy

public static <ENTITY,
A,
R>
Collector<ENTITY,?,Map<Short,R>> groupingBy(ShortField<ENTITY> field,
 Collector<ENTITY,A,R> downstream)

groupingBy

public static <ENTITY,
A,
R>
Collector<ENTITY,?,Map<Byte,R>> groupingBy(ByteField<ENTITY> field,
 Collector<ENTITY,A,R> downstream)

groupingBy

public static <ENTITY,
A,
R>
Collector<ENTITY,?,Map<Double,R>> groupingBy(DoubleField<ENTITY> field,
 Collector<ENTITY,A,R> downstream)

groupingBy

public static <ENTITY,
A,
R>
Collector<ENTITY,?,Map<Float,R>> groupingBy(FloatField<ENTITY> field,
 Collector<ENTITY,A,R> downstream)

groupingBy

public static <ENTITY,
A,
R>
Collector<ENTITY,?,Map<Boolean,R>> groupingBy(BooleanField<ENTITY> field,
 Collector<ENTITY,A,R> downstream)

groupingBy

public static <ENTITY,
A,
R>
Collector<ENTITY,?,Map<Character,R>> groupingBy(CharField<ENTITY> field,
 Collector<ENTITY,A,R> downstream)

groupingBy

public static <ENTITY,
A,
R>
Collector<ENTITY,?,Map<String,R>> groupingBy(StringField<ENTITY> field,
 Collector<ENTITY,A,R> downstream)

groupingBy

public static <ENTITY,
T,
A,
R>
Collector<ENTITY,?,Map<T,R>> groupingBy(ReferenceField<ENTITY,T> field,
 Collector<ENTITY,A,R> downstream)

groupingBy

public static <T,
K,
D,
A,
M extends Map<K,
D>>
FieldCollector<T,?,M> groupingBy(Field<T> field,
 Function<T,K> classifier,
 Supplier<M> mapFactory,
 Collector<? super T,A,D> downstream)