Class CollapseRunsSpec<T,K,V>

java.lang.Object

org.aksw.commons.util.stream.CollapseRunsSpecBase<T,K,V>

org.aksw.commons.util.stream.CollapseRunsSpec<T,K,V>

Type Parameters:

T - Item type

K - Group key type

V - Accumulator type

public class CollapseRunsSpec<T,K,V>
extends CollapseRunsSpecBase<T,K,V>

Specification implementation. Provides several create methods for constructing a spec about how to collapse runs.

Author:

raven

Field Summary

Fields inherited from class CollapseRunsSpecBase

accAdd, accCtor, getGroupKey, groupKeyCompare

Constructor Summary

Constructors

Constructor	Description
CollapseRunsSpec(Function<? super T, ? extends K> getGroupKey, BiPredicate<? super K, ? super K> groupKeyCompare, BiFunction<? super Long, ? super K, ? extends V> accCtor, BiFunction<? super V, ? super T, ? extends V> accAdd)
CollapseRunsSpec(CollapseRunsSpecBase<T,K,V> other)

Method Summary

Modifier and Type	Method	Description
static <T,K,V> CollapseRunsSpec<T,K,V>	create(Function<? super T, ? extends K> getGroupKey, BiFunction<? super Long, ? super K, ? extends V> accCtor, BiConsumer<? super V, ? super T> accAdd)	Create method with the following characteristics: the accumulator constructor receives the number of so-far created accumulators (starting with 0) and the group key Group keys are compared using Objects::equals
static <T,K,V> CollapseRunsSpec<T,K,V>	create(Function<? super T, ? extends K> getGroupKey, BiPredicate<? super K, ? super K> groupKeyCompare, BiFunction<? super Long, ? super K, ? extends V> accCtor, BiFunction<? super V, ? super T, ? extends V> accAdd)
static <T,K,V> CollapseRunsSpec<T,K,V>	create(Function<? super T, ? extends K> getGroupKey, BiPredicate<? super K, ? super K> groupKeyCompare, Function<? super K, ? extends V> accCtor, BiConsumer<? super V, ? super T> accAdd)
static <T,K,V> CollapseRunsSpec<T,K,V>	create(Function<? super T, ? extends K> getGroupKey, BiPredicate<? super K, ? super K> groupKeyCompare, Function<? super K, ? extends V> accCtor, BiFunction<? super V, ? super T, ? extends V> accAdd)
static <T,K,V> CollapseRunsSpec<T,K,V>	create(Function<? super T, ? extends K> getGroupKey, Function<? super K, ? extends V> accCtor, BiConsumer<? super V, ? super T> accAdd)	Create method with the following characteristics: the accumulator constructor receives the group key Group keys are compared using Objects::equals
static <T,K,V> CollapseRunsSpec<T,K,V>	create(Function<? super T, ? extends K> getGroupKey, Supplier<? extends V> accCtor, BiConsumer<? super V, ? super T> accAdd)
static <T,K,V> CollapseRunsSpec<T,K,V>	createAcc(Function<? super T, ? extends K> getGroupKey, Function<? super K, ? extends V> accCtor, BiFunction<? super V, ? super T, ? extends V> accAdd)	Create method with the following characteristics: the accumulator constructor receives the group key Group keys are compared using Objects::equals
static <T,K,V> CollapseRunsSpec<T,K,V>	createAcc(Function<? super T, ? extends K> getGroupKey, Supplier<? extends V> accCtor, BiFunction<? super V, ? super T, ? extends V> accAdd)	Create method with the following characteristics: the accumulator constructor is a mere supplier (and thus neither depends on the accumulator count nor the group Key) Group keys are compared using Objects::equals
static <T,K> CollapseRunsSpec<T,K,List<T>>	createList(Function<? super T, ? extends K> getGroupKey)

Methods inherited from class Object

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

Constructor Details

CollapseRunsSpec

public CollapseRunsSpec(CollapseRunsSpecBase<T,K,V> other)

CollapseRunsSpec

public CollapseRunsSpec(Function<? super T, ? extends K> getGroupKey,
 BiPredicate<? super K, ? super K> groupKeyCompare,
 BiFunction<? super Long, ? super K, ? extends V> accCtor,
 BiFunction<? super V, ? super T, ? extends V> accAdd)

Method Details

createAcc

public static <T,K,V> CollapseRunsSpec<T,K,V> createAcc(Function<? super T, ? extends K> getGroupKey,
 Supplier<? extends V> accCtor,
 BiFunction<? super V, ? super T, ? extends V> accAdd)

Create method with the following characteristics:

• the accumulator constructor is a mere supplier (and thus neither depends on the accumulator count nor the group Key)
• Group keys are compared using Objects::equals

createAcc

public static <T,K,V> CollapseRunsSpec<T,K,V> createAcc(Function<? super T, ? extends K> getGroupKey,
 Function<? super K, ? extends V> accCtor,
 BiFunction<? super V, ? super T, ? extends V> accAdd)

Create method with the following characteristics:

• the accumulator constructor receives the group key
• Group keys are compared using Objects::equals

create

public static <T,K,V> CollapseRunsSpec<T,K,V> create(Function<? super T, ? extends K> getGroupKey,
 Function<? super K, ? extends V> accCtor,
 BiConsumer<? super V, ? super T> accAdd)

Create method with the following characteristics:

• the accumulator constructor receives the group key
• Group keys are compared using Objects::equals

create

public static <T,K,V> CollapseRunsSpec<T,K,V> create(Function<? super T, ? extends K> getGroupKey,
 Supplier<? extends V> accCtor,
 BiConsumer<? super V, ? super T> accAdd)

createList

public static <T,K> CollapseRunsSpec<T,K,List<T>> createList(Function<? super T, ? extends K> getGroupKey)

create

public static <T,K,V> CollapseRunsSpec<T,K,V> create(Function<? super T, ? extends K> getGroupKey,
 BiFunction<? super Long, ? super K, ? extends V> accCtor,
 BiConsumer<? super V, ? super T> accAdd)

Create method with the following characteristics:

• the accumulator constructor receives the number of so-far created accumulators (starting with 0) and the group key
• Group keys are compared using Objects::equals

create

public static <T,K,V> CollapseRunsSpec<T,K,V> create(Function<? super T, ? extends K> getGroupKey,
 BiPredicate<? super K, ? super K> groupKeyCompare,
 Function<? super K, ? extends V> accCtor,
 BiFunction<? super V, ? super T, ? extends V> accAdd)

create

public static <T,K,V> CollapseRunsSpec<T,K,V> create(Function<? super T, ? extends K> getGroupKey,
 BiPredicate<? super K, ? super K> groupKeyCompare,
 Function<? super K, ? extends V> accCtor,
 BiConsumer<? super V, ? super T> accAdd)

create

public static <T,K,V> CollapseRunsSpec<T,K,V> create(Function<? super T, ? extends K> getGroupKey,
 BiPredicate<? super K, ? super K> groupKeyCompare,
 BiFunction<? super Long, ? super K, ? extends V> accCtor,
 BiFunction<? super V, ? super T, ? extends V> accAdd)