com.github.lokic.javaplus

类 OtherCollectors

java.lang.Object

com.github.lokic.javaplus.OtherCollectors

public class OtherCollectors
extends Object

嵌套类概要

嵌套类

限定符和类型	类和说明
static class	OtherCollectors.CollectorImpl<T,A,R> Simple implementation class for Collector.
static class	OtherCollectors.Distinct
static class	OtherCollectors.Reversed

字段概要

字段

限定符和类型	字段和说明
static Set<java.util.stream.Collector.Characteristics>	CH_CONCURRENT_ID
static Set<java.util.stream.Collector.Characteristics>	CH_CONCURRENT_NOID
static Set<java.util.stream.Collector.Characteristics>	CH_ID
static Set<java.util.stream.Collector.Characteristics>	CH_NOID
static Set<java.util.stream.Collector.Characteristics>	CH_UNORDERED_ID
static Set<java.util.stream.Collector.Characteristics>	CH_UNORDERED_NOID

构造器概要

构造器

构造器和说明
OtherCollectors()

方法概要

限定符和类型	方法和说明
static <T> java.util.stream.Collector<T,?,BigDecimal>	averagingBigDecimal(java.util.function.Function<? super T,BigDecimal> mapper, int scale, RoundingMode roundingMode)
static <T,A,R> java.util.stream.Collector<T,?,R>	filtering(java.util.function.Predicate<? super T> predicate, java.util.stream.Collector<? super T,A,R> downstream)
static <T,U,A,R> java.util.stream.Collector<T,?,R>	flatMapping(java.util.function.Function<? super T,? extends java.util.stream.Stream<? extends U>> mapper, java.util.stream.Collector<? super U,A,R> downstream)
static <T> java.util.stream.Collector<T,?,BigDecimal>	summingBigDecimal(java.util.function.Function<? super T,BigDecimal> mapper)
static <T,K,U,M extends Map<K,T>> java.util.stream.Collector<Map.Entry<K,U>,?,M>	toMap(java.util.function.Function<? super Map.Entry<K,U>,? extends T> valueMapper, java.util.function.Supplier<M> mapSupplier)
static <T1,T2,K,U,M extends Map<K,U>> java.util.stream.Collector<Tuple2<T1,T2>,?,M>	toMap(Function2<? super T1,? super T2,? extends K> keyMapper, Function2<? super T1,? super T2,? extends U> valueMapper, java.util.function.BinaryOperator<U> mergeFunction, java.util.function.Supplier<M> mapSupplier)
static <K,U,M extends Map<K,U>> java.util.stream.Collector<Map.Entry<K,U>,?,M>	toMap(java.util.function.Supplier<M> mapSupplier)
static <T,K,U,M extends Map<K,U>> java.util.stream.Collector<T,?,java.util.stream.Stream<Map.Entry<K,U>>>	toMapEntryStream(java.util.function.Function<? super T,? extends K> keyMapper, java.util.function.Function<? super T,? extends U> valueMapper, java.util.function.BinaryOperator<U> mergeFunction, java.util.function.Supplier<M> mapSupplier)
static <T1,T2,K,U,M extends Map<K,U>> java.util.stream.Collector<Tuple2<T1,T2>,?,java.util.stream.Stream<Map.Entry<K,U>>>	toMapEntryStream(Function2<? super T1,? super T2,? extends K> keyMapper, Function2<? super T1,? super T2,? extends U> valueMapper, java.util.function.BinaryOperator<U> mergeFunction, java.util.function.Supplier<M> mapSupplier)
static <T,K,U,M extends Map<K,U>> java.util.stream.Collector<T,?,java.util.stream.Stream<Tuple2<K,U>>>	toMapTupleStream(java.util.function.Function<? super T,? extends K> keyMapper, java.util.function.Function<? super T,? extends U> valueMapper, java.util.function.BinaryOperator<U> mergeFunction, java.util.function.Supplier<M> mapSupplier)
static <T1,T2,K,U,M extends Map<K,U>> java.util.stream.Collector<Tuple2<T1,T2>,?,java.util.stream.Stream<Tuple2<K,U>>>	toMapTupleStream(Function2<? super T1,? super T2,? extends K> keyMapper, Function2<? super T1,? super T2,? extends U> valueMapper, java.util.function.BinaryOperator<U> mergeFunction, java.util.function.Supplier<M> mapSupplier)

从类继承的方法 java.lang.Object

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

字段详细资料

CH_CONCURRENT_ID

public static final Set<java.util.stream.Collector.Characteristics> CH_CONCURRENT_ID

CH_CONCURRENT_NOID

public static final Set<java.util.stream.Collector.Characteristics> CH_CONCURRENT_NOID

CH_ID

public static final Set<java.util.stream.Collector.Characteristics> CH_ID

CH_UNORDERED_ID

public static final Set<java.util.stream.Collector.Characteristics> CH_UNORDERED_ID

CH_NOID

public static final Set<java.util.stream.Collector.Characteristics> CH_NOID

CH_UNORDERED_NOID

public static final Set<java.util.stream.Collector.Characteristics> CH_UNORDERED_NOID

构造器详细资料

OtherCollectors

public OtherCollectors()

方法详细资料

toMap

public static <K,U,M extends Map<K,U>> java.util.stream.Collector<Map.Entry<K,U>,?,M> toMap(java.util.function.Supplier<M> mapSupplier)

toMap

public static <T,K,U,M extends Map<K,T>> java.util.stream.Collector<Map.Entry<K,U>,?,M> toMap(java.util.function.Function<? super Map.Entry<K,U>,? extends T> valueMapper,
                                                                                              java.util.function.Supplier<M> mapSupplier)

toMap

public static <T1,T2,K,U,M extends Map<K,U>> java.util.stream.Collector<Tuple2<T1,T2>,?,M> toMap(Function2<? super T1,? super T2,? extends K> keyMapper,
                                                                                                 Function2<? super T1,? super T2,? extends U> valueMapper,
                                                                                                 java.util.function.BinaryOperator<U> mergeFunction,
                                                                                                 java.util.function.Supplier<M> mapSupplier)

toMapEntryStream

public static <T1,T2,K,U,M extends Map<K,U>> java.util.stream.Collector<Tuple2<T1,T2>,?,java.util.stream.Stream<Map.Entry<K,U>>> toMapEntryStream(Function2<? super T1,? super T2,? extends K> keyMapper,
                                                                                                                                                  Function2<? super T1,? super T2,? extends U> valueMapper,
                                                                                                                                                  java.util.function.BinaryOperator<U> mergeFunction,
                                                                                                                                                  java.util.function.Supplier<M> mapSupplier)

toMapEntryStream

public static <T,K,U,M extends Map<K,U>> java.util.stream.Collector<T,?,java.util.stream.Stream<Map.Entry<K,U>>> toMapEntryStream(java.util.function.Function<? super T,? extends K> keyMapper,
                                                                                                                                  java.util.function.Function<? super T,? extends U> valueMapper,
                                                                                                                                  java.util.function.BinaryOperator<U> mergeFunction,
                                                                                                                                  java.util.function.Supplier<M> mapSupplier)

toMapTupleStream

public static <T1,T2,K,U,M extends Map<K,U>> java.util.stream.Collector<Tuple2<T1,T2>,?,java.util.stream.Stream<Tuple2<K,U>>> toMapTupleStream(Function2<? super T1,? super T2,? extends K> keyMapper,
                                                                                                                                               Function2<? super T1,? super T2,? extends U> valueMapper,
                                                                                                                                               java.util.function.BinaryOperator<U> mergeFunction,
                                                                                                                                               java.util.function.Supplier<M> mapSupplier)

toMapTupleStream

public static <T,K,U,M extends Map<K,U>> java.util.stream.Collector<T,?,java.util.stream.Stream<Tuple2<K,U>>> toMapTupleStream(java.util.function.Function<? super T,? extends K> keyMapper,
                                                                                                                               java.util.function.Function<? super T,? extends U> valueMapper,
                                                                                                                               java.util.function.BinaryOperator<U> mergeFunction,
                                                                                                                               java.util.function.Supplier<M> mapSupplier)

filtering

public static <T,A,R> java.util.stream.Collector<T,?,R> filtering(java.util.function.Predicate<? super T> predicate,
                                                                  java.util.stream.Collector<? super T,A,R> downstream)

flatMapping

public static <T,U,A,R> java.util.stream.Collector<T,?,R> flatMapping(java.util.function.Function<? super T,? extends java.util.stream.Stream<? extends U>> mapper,
                                                                      java.util.stream.Collector<? super U,A,R> downstream)

summingBigDecimal

public static <T> java.util.stream.Collector<T,?,BigDecimal> summingBigDecimal(java.util.function.Function<? super T,BigDecimal> mapper)

averagingBigDecimal

public static <T> java.util.stream.Collector<T,?,BigDecimal> averagingBigDecimal(java.util.function.Function<? super T,BigDecimal> mapper,
                                                                                 int scale,
                                                                                 RoundingMode roundingMode)