com.speedment.runtime.field.collector

Class FieldCollectors

java.lang.Object

com.speedment.runtime.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 and Description
static <ENTITY,D> Collector<ENTITY,?,Map<Boolean,List<ENTITY>>>	groupingBy(BooleanField<ENTITY,D> field)
static <ENTITY,D,A,R> Collector<ENTITY,?,Map<Boolean,R>>	groupingBy(BooleanField<ENTITY,D> field, Collector<ENTITY,A,R> downstream)
static <ENTITY,D> Collector<ENTITY,?,Map<Byte,List<ENTITY>>>	groupingBy(ByteField<ENTITY,D> field)
static <ENTITY,D,A,R> Collector<ENTITY,?,Map<Byte,R>>	groupingBy(ByteField<ENTITY,D> field, Collector<ENTITY,A,R> downstream)
static <ENTITY,D> Collector<ENTITY,?,Map<Character,List<ENTITY>>>	groupingBy(CharField<ENTITY,D> field)
static <ENTITY,D,A,R> Collector<ENTITY,?,Map<Character,R>>	groupingBy(CharField<ENTITY,D> field, Collector<ENTITY,A,R> downstream)
static <ENTITY,D> Collector<ENTITY,?,Map<Double,List<ENTITY>>>	groupingBy(DoubleField<ENTITY,D> field)
static <ENTITY,D,A,R> Collector<ENTITY,?,Map<Double,R>>	groupingBy(DoubleField<ENTITY,D> 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,D> Collector<ENTITY,?,Map<Float,List<ENTITY>>>	groupingBy(FloatField<ENTITY,D> field)
static <ENTITY,D,A,R> Collector<ENTITY,?,Map<Float,R>>	groupingBy(FloatField<ENTITY,D> field, Collector<ENTITY,A,R> downstream)
static <ENTITY,D> Collector<ENTITY,?,Map<Integer,List<ENTITY>>>	groupingBy(IntField<ENTITY,D> field)
static <ENTITY,D,A,R> Collector<ENTITY,?,Map<Integer,R>>	groupingBy(IntField<ENTITY,D> field, Collector<ENTITY,A,R> downstream)
static <ENTITY,D> Collector<ENTITY,?,Map<Long,List<ENTITY>>>	groupingBy(LongField<ENTITY,D> field)
static <ENTITY,D,A,R> Collector<ENTITY,?,Map<Long,R>>	groupingBy(LongField<ENTITY,D> field, Collector<ENTITY,A,R> downstream)
static <ENTITY,D,T> Collector<ENTITY,?,Map<T,List<ENTITY>>>	groupingBy(ReferenceField<ENTITY,D,T> field)
static <ENTITY,T,D,A,R> Collector<ENTITY,?,Map<T,R>>	groupingBy(ReferenceField<ENTITY,D,T> field, Collector<ENTITY,A,R> downstream)
static <ENTITY,D> Collector<ENTITY,?,Map<Short,List<ENTITY>>>	groupingBy(ShortField<ENTITY,D> field)
static <ENTITY,D,A,R> Collector<ENTITY,?,Map<Short,R>>	groupingBy(ShortField<ENTITY,D> field, Collector<ENTITY,A,R> downstream)
static <ENTITY,D> Collector<ENTITY,?,Map<String,List<ENTITY>>>	groupingBy(StringField<ENTITY,D> field)
static <ENTITY,D,A,R> Collector<ENTITY,?,Map<String,R>>	groupingBy(StringField<ENTITY,D> 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 Detail

groupingBy

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

groupingBy

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

groupingBy

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

groupingBy

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

groupingBy

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

groupingBy

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

groupingBy

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

groupingBy

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

groupingBy

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

groupingBy

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

groupingBy

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

groupingBy

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

groupingBy

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

groupingBy

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

groupingBy

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

groupingBy

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

groupingBy

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

groupingBy

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

groupingBy

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

groupingBy

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