Hibernate ORM - hibernate-core 5.6.15.Final · org.hibernate.query.spi.DoubleStreamDecorator

Modifier and Type	Field and Description
private final Runnable	closeHandler
private final DoubleStream	delegate

Access	Constructor and Description
public	DoubleStreamDecorator(DoubleStream delegate, Runnable closeHandler)

Method Summary

Modifier and Type	Method and Description
public boolean	allMatch(DoublePredicate a non-interfering, stateless predicate to apply to elements of this stream predicate) Implements java.util.stream.DoubleStream.allMatch. Returns whether all elements of this stream match the provided predicate.
public boolean	anyMatch(DoublePredicate a non-interfering, stateless predicate to apply to elements of this stream predicate) Implements java.util.stream.DoubleStream.anyMatch. Returns whether any elements of this stream match the provided predicate.
public OptionalDouble	average() Implements java.util.stream.DoubleStream.average. Returns an `OptionalDouble` describing the arithmetic mean of elements of this stream, or an empty optional if this stream is empty.
public Stream<Double>	boxed() Implements java.util.stream.DoubleStream.boxed. Returns a `Stream` consisting of the elements of this stream, boxed to `Double`.
public void	close() Implements java.util.stream.BaseStream.close. Closes this stream, causing all close handlers for this stream pipeline to be called.
public <R> R	collect(Supplier<R> a function that creates a new mutable result container. For a parallel execution, this function may be called multiple times and must return a fresh value each time. supplier, ObjDoubleConsumer<R> an associative, non-interfering, stateless function that must fold an element into a result container. accumulator, BiConsumer<R, R> an associative, non-interfering, stateless function that accepts two partial result containers and merges them, which must be compatible with the accumulator function. The combiner function must fold the elements from the second result container into the first result container. combiner) Implements java.util.stream.DoubleStream.collect. Performs a mutable reduction operation on the elements of this stream.
public long	count() Implements java.util.stream.DoubleStream.count. Returns the count of elements in this stream.
public DoubleStream	distinct() Implements java.util.stream.DoubleStream.distinct. Returns a stream consisting of the distinct elements of this stream.
public DoubleStream	filter(DoublePredicate a non-interfering, stateless predicate to apply to each element to determine if it should be included predicate) Implements java.util.stream.DoubleStream.filter. Returns a stream consisting of the elements of this stream that match the given predicate.
public OptionalDouble	findAny() Implements java.util.stream.DoubleStream.findAny. Returns an `OptionalDouble` describing some element of the stream, or an empty `OptionalDouble` if the stream is empty.
public OptionalDouble	findFirst() Implements java.util.stream.DoubleStream.findFirst. Returns an `OptionalDouble` describing the first element of this stream, or an empty `OptionalDouble` if the stream is empty.
public DoubleStream	flatMap(DoubleFunction<? extends DoubleStream> a non-interfering, stateless function to apply to each element which produces a `DoubleStream` of new values mapper) Implements java.util.stream.DoubleStream.flatMap. Returns a stream consisting of the results of replacing each element of this stream with the contents of a mapped stream produced by applying the provided mapping function to each element.
public void	forEach(DoubleConsumer a non-interfering action to perform on the elements action) Implements java.util.stream.DoubleStream.forEach. Performs an action for each element of this stream.
public void	forEachOrdered(DoubleConsumer a non-interfering action to perform on the elements action) Implements java.util.stream.DoubleStream.forEachOrdered. Performs an action for each element of this stream, guaranteeing that each element is processed in encounter order for streams that have a defined encounter order.
public boolean	isParallel() Implements java.util.stream.BaseStream.isParallel. Returns whether this stream, if a terminal operation were to be executed, would execute in parallel.
public PrimitiveIterator.OfDouble	iterator() Implements java.util.stream.DoubleStream.iterator. Returns an iterator for the elements of this stream.
public DoubleStream	limit(long the number of elements the stream should be limited to maxSize) Implements java.util.stream.DoubleStream.limit. Returns a stream consisting of the elements of this stream, truncated to be no longer than `maxSize` in length.
public DoubleStream	map(DoubleUnaryOperator a non-interfering, stateless function to apply to each element mapper) Implements java.util.stream.DoubleStream.map. Returns a stream consisting of the results of applying the given function to the elements of this stream.
public IntStream	mapToInt(DoubleToIntFunction a non-interfering, stateless function to apply to each element mapper) Implements java.util.stream.DoubleStream.mapToInt. Returns an `IntStream` consisting of the results of applying the given function to the elements of this stream.
public LongStream	mapToLong(DoubleToLongFunction a non-interfering, stateless function to apply to each element mapper) Implements java.util.stream.DoubleStream.mapToLong. Returns a `LongStream` consisting of the results of applying the given function to the elements of this stream.
public <U> Stream<U>	mapToObj(DoubleFunction<? extends U> a non-interfering, stateless function to apply to each element mapper) Implements java.util.stream.DoubleStream.mapToObj. Returns an object-valued `Stream` consisting of the results of applying the given function to the elements of this stream.
public OptionalDouble	max() Implements java.util.stream.DoubleStream.max. Returns an `OptionalDouble` describing the maximum element of this stream, or an empty OptionalDouble if this stream is empty.
public OptionalDouble	min() Implements java.util.stream.DoubleStream.min. Returns an `OptionalDouble` describing the minimum element of this stream, or an empty OptionalDouble if this stream is empty.
public boolean	noneMatch(DoublePredicate a non-interfering, stateless predicate to apply to elements of this stream predicate) Implements java.util.stream.DoubleStream.noneMatch. Returns whether no elements of this stream match the provided predicate.
public DoubleStream	onClose(Runnable A task to execute when the stream is closed closeHandler) Implements java.util.stream.BaseStream.onClose. Returns an equivalent stream with an additional close handler.
public DoubleStream	parallel() Implements java.util.stream.DoubleStream.parallel. Returns an equivalent stream that is parallel.
public DoubleStream	peek(DoubleConsumer a non-interfering action to perform on the elements as they are consumed from the stream action) Implements java.util.stream.DoubleStream.peek. Returns a stream consisting of the elements of this stream, additionally performing the provided action on each element as elements are consumed from the resulting stream.
public double	reduce(double the identity value for the accumulating function identity, DoubleBinaryOperator an associative, non-interfering, stateless function for combining two values op) Implements java.util.stream.DoubleStream.reduce. Performs a reduction on the elements of this stream, using the provided identity value and an associative accumulation function, and returns the reduced value.
public OptionalDouble	reduce(DoubleBinaryOperator an associative, non-interfering, stateless function for combining two values op) Implements java.util.stream.DoubleStream.reduce. Performs a reduction on the elements of this stream, using an associative accumulation function, and returns an `OptionalDouble` describing the reduced value, if any.
public DoubleStream	sequential() Implements java.util.stream.DoubleStream.sequential. Returns an equivalent stream that is sequential.
public DoubleStream	skip(long the number of leading elements to skip n) Implements java.util.stream.DoubleStream.skip. Returns a stream consisting of the remaining elements of this stream after discarding the first `n` elements of the stream.
public DoubleStream	sorted() Implements java.util.stream.DoubleStream.sorted. Returns a stream consisting of the elements of this stream in sorted order.
public Spliterator.OfDouble	spliterator() Implements java.util.stream.DoubleStream.spliterator. Returns a spliterator for the elements of this stream.
public double	sum() Implements java.util.stream.DoubleStream.sum. Returns the sum of elements in this stream.
public DoubleSummaryStatistics	summaryStatistics() Implements java.util.stream.DoubleStream.summaryStatistics. Returns a `DoubleSummaryStatistics` describing various summary data about the elements of this stream.
public double[]	toArray() Implements java.util.stream.DoubleStream.toArray. Returns an array containing the elements of this stream.
public DoubleStream	unordered() Implements java.util.stream.BaseStream.unordered. Returns an equivalent stream that is unordered.

Inherited from java.lang.Object:: clone equals finalize getClass hashCode notify notifyAll toString wait wait wait

closeHandler	back to summary
private final Runnable closeHandler

delegate	back to summary
private final DoubleStream delegate

DoubleStreamDecorator	back to summary
public DoubleStreamDecorator(DoubleStream delegate, Runnable closeHandler)

Method Detail

allMatch back to summary

allMatch	back to summary
public boolean allMatch(DoublePredicate predicate) Implements java.util.stream.DoubleStream.allMatch. Doc from java.util.stream.DoubleStream.allMatch. Returns whether all elements of this stream match the provided predicate. May not evaluate the predicate on all elements if not necessary for determining the result. If the stream is empty then `true` is returned and the predicate is not evaluated. This is a short-circuiting terminal operation. Parameters predicate:DoublePredicate a non-interfering, stateless predicate to apply to elements of this stream Returns:boolean `true` if either all elements of the stream match the provided predicate or the stream is empty, otherwise `false` Annotations @Override

public boolean allMatch(DoublePredicate predicate)

Implements java.util.stream.DoubleStream.allMatch.

Doc from java.util.stream.DoubleStream.allMatch.

Returns whether all elements of this stream match the provided predicate. May not evaluate the predicate on all elements if not necessary for determining the result. If the stream is empty then true is returned and the predicate is not evaluated.

This is a short-circuiting terminal operation.

Parameters

predicate:DoublePredicate: a non-interfering, stateless predicate to apply to elements of this stream

Returns:boolean

true if either all elements of the stream match the provided predicate or the stream is empty, otherwise false

Annotations

@Override

anyMatch back to summary

anyMatch	back to summary
public boolean anyMatch(DoublePredicate predicate) Implements java.util.stream.DoubleStream.anyMatch. Doc from java.util.stream.DoubleStream.anyMatch. Returns whether any elements of this stream match the provided predicate. May not evaluate the predicate on all elements if not necessary for determining the result. If the stream is empty then `false` is returned and the predicate is not evaluated. This is a short-circuiting terminal operation. Parameters predicate:DoublePredicate a non-interfering, stateless predicate to apply to elements of this stream Returns:boolean `true` if any elements of the stream match the provided predicate, otherwise `false` Annotations @Override

public boolean anyMatch(DoublePredicate predicate)

Implements java.util.stream.DoubleStream.anyMatch.

Doc from java.util.stream.DoubleStream.anyMatch.

Returns whether any elements of this stream match the provided predicate. May not evaluate the predicate on all elements if not necessary for determining the result. If the stream is empty then false is returned and the predicate is not evaluated.

This is a short-circuiting terminal operation.

Parameters

predicate:DoublePredicate: a non-interfering, stateless predicate to apply to elements of this stream

Returns:boolean

true if any elements of the stream match the provided predicate, otherwise false

Annotations

@Override

average back to summary

average	back to summary
public OptionalDouble average() Implements java.util.stream.DoubleStream.average. Doc from java.util.stream.DoubleStream.average. Returns an `OptionalDouble` describing the arithmetic mean of elements of this stream, or an empty optional if this stream is empty. The computed average can vary numerically and have the special case behavior as computing the sum; see `sum` for details. The average is a special case of a reduction. This is a terminal operation. Returns:OptionalDouble an `OptionalDouble` containing the average element of this stream, or an empty optional if the stream is empty Annotations @Override

public OptionalDouble average()

Implements java.util.stream.DoubleStream.average.

Doc from java.util.stream.DoubleStream.average.

Returns an OptionalDouble describing the arithmetic mean of elements of this stream, or an empty optional if this stream is empty.

The computed average can vary numerically and have the special case behavior as computing the sum; see sum for details.

The average is a special case of a reduction.

This is a terminal operation.

Returns:OptionalDouble

an OptionalDouble containing the average element of this stream, or an empty optional if the stream is empty

Annotations

@Override

boxed back to summary

boxed	back to summary
public Stream<Double> boxed() Implements java.util.stream.DoubleStream.boxed. Doc from java.util.stream.DoubleStream.boxed. Returns a `Stream` consisting of the elements of this stream, boxed to `Double`. This is an intermediate operation. Returns:Stream<Double> a `Stream` consistent of the elements of this stream, each boxed to a `Double` Annotations @Override

public Stream<Double> boxed()

Implements java.util.stream.DoubleStream.boxed.

Doc from java.util.stream.DoubleStream.boxed.

Returns a Stream consisting of the elements of this stream, boxed to Double.

This is an intermediate operation.

Returns:Stream<Double>

a Stream consistent of the elements of this stream, each boxed to a Double

Annotations

@Override

close	back to summary
public void close() Implements java.util.stream.BaseStream.close. Doc from java.util.stream.BaseStream.close. Closes this stream, causing all close handlers for this stream pipeline to be called. Annotations @Override

back to summary

public void close()

Implements java.util.stream.BaseStream.close.

Doc from java.util.stream.BaseStream.close.

Closes this stream, causing all close handlers for this stream pipeline to be called.

Annotations

@Override

collect back to summary

collect	back to summary
public <R> R collect(Supplier<R> supplier, ObjDoubleConsumer<R> accumulator, BiConsumer<R, R> combiner) Implements java.util.stream.DoubleStream.collect. Doc from java.util.stream.DoubleStream.collect. Performs a mutable reduction operation on the elements of this stream. A mutable reduction is one in which the reduced value is a mutable result container, such as an `ArrayList`, and elements are incorporated by updating the state of the result rather than by replacing the result. This produces a result equivalent to: `R result = supplier.get(); for (double element : this stream) accumulator.accept(result, element); return result;` Like `reduce(double, DoubleBinaryOperator)`, `collect` operations can be parallelized without requiring additional synchronization. This is a terminal operation. Parameters <R> the type of the mutable result container supplier:Supplier<R> a function that creates a new mutable result container. For a parallel execution, this function may be called multiple times and must return a fresh value each time. accumulator:ObjDoubleConsumer<R> an associative, non-interfering, stateless function that must fold an element into a result container. combiner:BiConsumer<R, R> an associative, non-interfering, stateless function that accepts two partial result containers and merges them, which must be compatible with the accumulator function. The combiner function must fold the elements from the second result container into the first result container. Returns:R the result of the reduction Annotations @Override

public <R> R collect(Supplier<R> supplier, ObjDoubleConsumer<R> accumulator, BiConsumer<R, R> combiner)

Implements java.util.stream.DoubleStream.collect.

Doc from java.util.stream.DoubleStream.collect.

Performs a mutable reduction operation on the elements of this stream. A mutable reduction is one in which the reduced value is a mutable result container, such as an ArrayList, and elements are incorporated by updating the state of the result rather than by replacing the result. This produces a result equivalent to:

R result = supplier.get();
    for (double element : this stream)
        accumulator.accept(result, element);
    return result;

Like reduce(double, DoubleBinaryOperator), collect operations can be parallelized without requiring additional synchronization.

This is a terminal operation.

Parameters

<R>: the type of the mutable result container
supplier:Supplier<R>: a function that creates a new mutable result container. For a parallel execution, this function may be called multiple times and must return a fresh value each time.
accumulator:ObjDoubleConsumer<R>: an associative, non-interfering, stateless function that must fold an element into a result container.
combiner:BiConsumer<R, R>: an associative, non-interfering, stateless function that accepts two partial result containers and merges them, which must be compatible with the accumulator function. The combiner function must fold the elements from the second result container into the first result container.

Returns:R

the result of the reduction

Annotations

@Override

count back to summary

count	back to summary
public long count() Implements java.util.stream.DoubleStream.count. Doc from java.util.stream.DoubleStream.count. Returns the count of elements in this stream. This is a special case of a reduction and is equivalent to: `return mapToLong(e -> 1L).sum();` This is a terminal operation. Returns:long the count of elements in this stream Annotations @Override

public long count()

Implements java.util.stream.DoubleStream.count.

Doc from java.util.stream.DoubleStream.count.

Returns the count of elements in this stream. This is a special case of a reduction and is equivalent to:

return mapToLong(e -> 1L).sum();

This is a terminal operation.

Returns:long

the count of elements in this stream

Annotations

@Override

distinct back to summary

distinct	back to summary
public DoubleStream distinct() Implements java.util.stream.DoubleStream.distinct. Doc from java.util.stream.DoubleStream.distinct. Returns a stream consisting of the distinct elements of this stream. The elements are compared for equality according to `java.lang.Double#compare(double, double)`. This is a stateful intermediate operation. Returns:DoubleStream the result stream Annotations @Override

public DoubleStream distinct()

Implements java.util.stream.DoubleStream.distinct.

Doc from java.util.stream.DoubleStream.distinct.

Returns a stream consisting of the distinct elements of this stream. The elements are compared for equality according to java.lang.Double#compare(double, double).

This is a stateful intermediate operation.

Returns:DoubleStream

the result stream

Annotations

@Override

filter	back to summary
public DoubleStream filter(DoublePredicate predicate) Implements java.util.stream.DoubleStream.filter. Doc from java.util.stream.DoubleStream.filter. Returns a stream consisting of the elements of this stream that match the given predicate. This is an intermediate operation. Parameters predicate:DoublePredicate a non-interfering, stateless predicate to apply to each element to determine if it should be included Returns:DoubleStream the new stream Annotations @Override

filter

back to summary

public DoubleStream filter(DoublePredicate predicate)

Implements java.util.stream.DoubleStream.filter.

Doc from java.util.stream.DoubleStream.filter.

Returns a stream consisting of the elements of this stream that match the given predicate.

This is an intermediate operation.

Parameters

predicate:DoublePredicate: a non-interfering, stateless predicate to apply to each element to determine if it should be included

Returns:DoubleStream

the new stream

Annotations

@Override

findAny back to summary

findAny	back to summary
public OptionalDouble findAny() Implements java.util.stream.DoubleStream.findAny. Doc from java.util.stream.DoubleStream.findAny. Returns an `OptionalDouble` describing some element of the stream, or an empty `OptionalDouble` if the stream is empty. This is a short-circuiting terminal operation. The behavior of this operation is explicitly nondeterministic; it is free to select any element in the stream. This is to allow for maximal performance in parallel operations; the cost is that multiple invocations on the same source may not return the same result. (If a stable result is desired, use `findFirst()` instead.) Returns:OptionalDouble an `OptionalDouble` describing some element of this stream, or an empty `OptionalDouble` if the stream is empty Annotations @Override

public OptionalDouble findAny()

Implements java.util.stream.DoubleStream.findAny.

Doc from java.util.stream.DoubleStream.findAny.

Returns an OptionalDouble describing some element of the stream, or an empty OptionalDouble if the stream is empty.

This is a short-circuiting terminal operation.

The behavior of this operation is explicitly nondeterministic; it is free to select any element in the stream. This is to allow for maximal performance in parallel operations; the cost is that multiple invocations on the same source may not return the same result. (If a stable result is desired, use findFirst() instead.)

Returns:OptionalDouble

an OptionalDouble describing some element of this stream, or an empty OptionalDouble if the stream is empty

Annotations

@Override

findFirst back to summary

findFirst	back to summary
public OptionalDouble findFirst() Implements java.util.stream.DoubleStream.findFirst. Doc from java.util.stream.DoubleStream.findFirst. Returns an `OptionalDouble` describing the first element of this stream, or an empty `OptionalDouble` if the stream is empty. If the stream has no encounter order, then any element may be returned. This is a short-circuiting terminal operation. Returns:OptionalDouble an `OptionalDouble` describing the first element of this stream, or an empty `OptionalDouble` if the stream is empty Annotations @Override

public OptionalDouble findFirst()

Implements java.util.stream.DoubleStream.findFirst.

Doc from java.util.stream.DoubleStream.findFirst.

Returns an OptionalDouble describing the first element of this stream, or an empty OptionalDouble if the stream is empty. If the stream has no encounter order, then any element may be returned.

This is a short-circuiting terminal operation.

Returns:OptionalDouble

an OptionalDouble describing the first element of this stream, or an empty OptionalDouble if the stream is empty

Annotations

@Override

flatMap back to summary

flatMap	back to summary
public DoubleStream flatMap(DoubleFunction<? extends DoubleStream> mapper) Implements java.util.stream.DoubleStream.flatMap. Doc from java.util.stream.DoubleStream.flatMap. Returns a stream consisting of the results of replacing each element of this stream with the contents of a mapped stream produced by applying the provided mapping function to each element. Each mapped stream is `closed` after its contents have been placed into this stream. (If a mapped stream is `null` an empty stream is used, instead.) This is an intermediate operation. Parameters mapper:DoubleFunction<? extends DoubleStream> a non-interfering, stateless function to apply to each element which produces a `DoubleStream` of new values Returns:DoubleStream the new stream Annotations @Override

public DoubleStream flatMap(DoubleFunction<? extends DoubleStream> mapper)

Implements java.util.stream.DoubleStream.flatMap.

Doc from java.util.stream.DoubleStream.flatMap.

Returns a stream consisting of the results of replacing each element of this stream with the contents of a mapped stream produced by applying the provided mapping function to each element. Each mapped stream is closed after its contents have been placed into this stream. (If a mapped stream is null an empty stream is used, instead.)

This is an intermediate operation.

Parameters

mapper:DoubleFunction<? extends DoubleStream>: a non-interfering, stateless function to apply to each element which produces a DoubleStream of new values

Returns:DoubleStream

the new stream

Annotations

@Override

forEach	back to summary
public void forEach(DoubleConsumer action) Implements java.util.stream.DoubleStream.forEach. Doc from java.util.stream.DoubleStream.forEach. Performs an action for each element of this stream. This is a terminal operation. For parallel stream pipelines, this operation does not guarantee to respect the encounter order of the stream, as doing so would sacrifice the benefit of parallelism. For any given element, the action may be performed at whatever time and in whatever thread the library chooses. If the action accesses shared state, it is responsible for providing the required synchronization. Parameters action:DoubleConsumer a non-interfering action to perform on the elements Annotations @Override

forEach

back to summary

public void forEach(DoubleConsumer action)

Implements java.util.stream.DoubleStream.forEach.

Doc from java.util.stream.DoubleStream.forEach.

Performs an action for each element of this stream.

This is a terminal operation.

For parallel stream pipelines, this operation does not guarantee to respect the encounter order of the stream, as doing so would sacrifice the benefit of parallelism. For any given element, the action may be performed at whatever time and in whatever thread the library chooses. If the action accesses shared state, it is responsible for providing the required synchronization.

Parameters

action:DoubleConsumer: a non-interfering action to perform on the elements

Annotations

@Override

forEachOrdered	back to summary
public void forEachOrdered(DoubleConsumer action) Implements java.util.stream.DoubleStream.forEachOrdered. Doc from java.util.stream.DoubleStream.forEachOrdered. Performs an action for each element of this stream, guaranteeing that each element is processed in encounter order for streams that have a defined encounter order. This is a terminal operation. Parameters action:DoubleConsumer a non-interfering action to perform on the elements Annotations @Override

forEachOrdered

back to summary

public void forEachOrdered(DoubleConsumer action)

Implements java.util.stream.DoubleStream.forEachOrdered.

Doc from java.util.stream.DoubleStream.forEachOrdered.

Performs an action for each element of this stream, guaranteeing that each element is processed in encounter order for streams that have a defined encounter order.

This is a terminal operation.

Parameters

action:DoubleConsumer: a non-interfering action to perform on the elements

Annotations

@Override

isParallel back to summary

isParallel	back to summary
public boolean isParallel() Implements java.util.stream.BaseStream.isParallel. Doc from java.util.stream.BaseStream.isParallel. Returns whether this stream, if a terminal operation were to be executed, would execute in parallel. Calling this method after invoking an terminal stream operation method may yield unpredictable results. Returns:boolean `true` if this stream would execute in parallel if executed Annotations @Override

public boolean isParallel()

Implements java.util.stream.BaseStream.isParallel.

Doc from java.util.stream.BaseStream.isParallel.

Returns whether this stream, if a terminal operation were to be executed, would execute in parallel. Calling this method after invoking an terminal stream operation method may yield unpredictable results.

Returns:boolean

true if this stream would execute in parallel if executed

Annotations

@Override

iterator	back to summary
public PrimitiveIterator.OfDouble iterator() Implements java.util.stream.DoubleStream.iterator. Doc from java.util.stream.BaseStream.iterator. Returns an iterator for the elements of this stream. This is a terminal operation. Returns:PrimitiveIterator.OfDouble the element iterator for this stream Annotations @Override

iterator

back to summary

public PrimitiveIterator.OfDouble iterator()

Implements java.util.stream.DoubleStream.iterator.

Doc from java.util.stream.BaseStream.iterator.

Returns an iterator for the elements of this stream.

This is a terminal operation.

Returns:PrimitiveIterator.OfDouble

the element iterator for this stream

Annotations

@Override

limit back to summary

limit	back to summary
public DoubleStream limit(long maxSize) Implements java.util.stream.DoubleStream.limit. Doc from java.util.stream.DoubleStream.limit. Returns a stream consisting of the elements of this stream, truncated to be no longer than `maxSize` in length. This is a short-circuiting stateful intermediate operation. Parameters maxSize:long the number of elements the stream should be limited to Returns:DoubleStream the new stream Annotations @Override

public DoubleStream limit(long maxSize)

Implements java.util.stream.DoubleStream.limit.

Doc from java.util.stream.DoubleStream.limit.

Returns a stream consisting of the elements of this stream, truncated to be no longer than maxSize in length.

This is a short-circuiting stateful intermediate operation.

Parameters

maxSize:long: the number of elements the stream should be limited to

Returns:DoubleStream

the new stream

Annotations

@Override

map	back to summary
public DoubleStream map(DoubleUnaryOperator mapper) Implements java.util.stream.DoubleStream.map. Doc from java.util.stream.DoubleStream.map. Returns a stream consisting of the results of applying the given function to the elements of this stream. This is an intermediate operation. Parameters mapper:DoubleUnaryOperator a non-interfering, stateless function to apply to each element Returns:DoubleStream the new stream Annotations @Override

map

back to summary

public DoubleStream map(DoubleUnaryOperator mapper)

Implements java.util.stream.DoubleStream.map.

Doc from java.util.stream.DoubleStream.map.

Returns a stream consisting of the results of applying the given function to the elements of this stream.

This is an intermediate operation.

Parameters

mapper:DoubleUnaryOperator: a non-interfering, stateless function to apply to each element

Returns:DoubleStream

the new stream

Annotations

@Override

mapToInt back to summary

mapToInt	back to summary
public IntStream mapToInt(DoubleToIntFunction mapper) Implements java.util.stream.DoubleStream.mapToInt. Doc from java.util.stream.DoubleStream.mapToInt. Returns an `IntStream` consisting of the results of applying the given function to the elements of this stream. This is an intermediate operation. Parameters mapper:DoubleToIntFunction a non-interfering, stateless function to apply to each element Returns:IntStream the new stream Annotations @Override

public IntStream mapToInt(DoubleToIntFunction mapper)

Implements java.util.stream.DoubleStream.mapToInt.

Doc from java.util.stream.DoubleStream.mapToInt.

Returns an IntStream consisting of the results of applying the given function to the elements of this stream.

This is an intermediate operation.

Parameters

mapper:DoubleToIntFunction: a non-interfering, stateless function to apply to each element

Returns:IntStream

the new stream

Annotations

@Override

mapToLong back to summary

mapToLong	back to summary
public LongStream mapToLong(DoubleToLongFunction mapper) Implements java.util.stream.DoubleStream.mapToLong. Doc from java.util.stream.DoubleStream.mapToLong. Returns a `LongStream` consisting of the results of applying the given function to the elements of this stream. This is an intermediate operation. Parameters mapper:DoubleToLongFunction a non-interfering, stateless function to apply to each element Returns:LongStream the new stream Annotations @Override

public LongStream mapToLong(DoubleToLongFunction mapper)

Implements java.util.stream.DoubleStream.mapToLong.

Doc from java.util.stream.DoubleStream.mapToLong.

Returns a LongStream consisting of the results of applying the given function to the elements of this stream.

This is an intermediate operation.

Parameters

mapper:DoubleToLongFunction: a non-interfering, stateless function to apply to each element

Returns:LongStream

the new stream

Annotations

@Override

mapToObj back to summary

mapToObj	back to summary
public <U> Stream<U> mapToObj(DoubleFunction<? extends U> mapper) Implements java.util.stream.DoubleStream.mapToObj. Doc from java.util.stream.DoubleStream.mapToObj. Returns an object-valued `Stream` consisting of the results of applying the given function to the elements of this stream. This is an intermediate operation. Parameters <U> the element type of the new stream mapper:DoubleFunction<? extends U> a non-interfering, stateless function to apply to each element Returns:Stream<U> the new stream Annotations @Override

public <U> Stream<U> mapToObj(DoubleFunction<? extends U> mapper)

Implements java.util.stream.DoubleStream.mapToObj.

Doc from java.util.stream.DoubleStream.mapToObj.

Returns an object-valued Stream consisting of the results of applying the given function to the elements of this stream.

This is an intermediate operation.

Parameters

<U>: the element type of the new stream
mapper:DoubleFunction<? extends U>: a non-interfering, stateless function to apply to each element

Returns:Stream<U>

the new stream

Annotations

@Override

max back to summary

max	back to summary
public OptionalDouble max() Implements java.util.stream.DoubleStream.max. Doc from java.util.stream.DoubleStream.max. Returns an `OptionalDouble` describing the maximum element of this stream, or an empty OptionalDouble if this stream is empty. The maximum element will be `Double.NaN` if any stream element was NaN. Unlike the numerical comparison operators, this method considers negative zero to be strictly smaller than positive zero. This is a special case of a reduction and is equivalent to: `return reduce(Double::max);` This is a terminal operation. Returns:OptionalDouble an `OptionalDouble` containing the maximum element of this stream, or an empty optional if the stream is empty Annotations @Override

public OptionalDouble max()

Implements java.util.stream.DoubleStream.max.

Doc from java.util.stream.DoubleStream.max.

Returns an OptionalDouble describing the maximum element of this stream, or an empty OptionalDouble if this stream is empty. The maximum element will be Double.NaN if any stream element was NaN. Unlike the numerical comparison operators, this method considers negative zero to be strictly smaller than positive zero. This is a special case of a reduction and is equivalent to:

return reduce(Double::max);

This is a terminal operation.

Returns:OptionalDouble

an OptionalDouble containing the maximum element of this stream, or an empty optional if the stream is empty

Annotations

@Override

min back to summary

min	back to summary
public OptionalDouble min() Implements java.util.stream.DoubleStream.min. Doc from java.util.stream.DoubleStream.min. Returns an `OptionalDouble` describing the minimum element of this stream, or an empty OptionalDouble if this stream is empty. The minimum element will be `Double.NaN` if any stream element was NaN. Unlike the numerical comparison operators, this method considers negative zero to be strictly smaller than positive zero. This is a special case of a reduction and is equivalent to: `return reduce(Double::min);` This is a terminal operation. Returns:OptionalDouble an `OptionalDouble` containing the minimum element of this stream, or an empty optional if the stream is empty Annotations @Override

public OptionalDouble min()

Implements java.util.stream.DoubleStream.min.

Doc from java.util.stream.DoubleStream.min.

Returns an OptionalDouble describing the minimum element of this stream, or an empty OptionalDouble if this stream is empty. The minimum element will be Double.NaN if any stream element was NaN. Unlike the numerical comparison operators, this method considers negative zero to be strictly smaller than positive zero. This is a special case of a reduction and is equivalent to:

return reduce(Double::min);

This is a terminal operation.

Returns:OptionalDouble

an OptionalDouble containing the minimum element of this stream, or an empty optional if the stream is empty

Annotations

@Override

noneMatch back to summary

noneMatch	back to summary
public boolean noneMatch(DoublePredicate predicate) Implements java.util.stream.DoubleStream.noneMatch. Doc from java.util.stream.DoubleStream.noneMatch. Returns whether no elements of this stream match the provided predicate. May not evaluate the predicate on all elements if not necessary for determining the result. If the stream is empty then `true` is returned and the predicate is not evaluated. This is a short-circuiting terminal operation. Parameters predicate:DoublePredicate a non-interfering, stateless predicate to apply to elements of this stream Returns:boolean `true` if either no elements of the stream match the provided predicate or the stream is empty, otherwise `false` Annotations @Override

public boolean noneMatch(DoublePredicate predicate)

Implements java.util.stream.DoubleStream.noneMatch.

Doc from java.util.stream.DoubleStream.noneMatch.

Returns whether no elements of this stream match the provided predicate. May not evaluate the predicate on all elements if not necessary for determining the result. If the stream is empty then true is returned and the predicate is not evaluated.

This is a short-circuiting terminal operation.

Parameters

predicate:DoublePredicate: a non-interfering, stateless predicate to apply to elements of this stream

Returns:boolean

true if either no elements of the stream match the provided predicate or the stream is empty, otherwise false

Annotations

@Override

onClose back to summary

onClose	back to summary
public DoubleStream onClose(Runnable closeHandler) Implements java.util.stream.BaseStream.onClose. Doc from java.util.stream.BaseStream.onClose. Returns an equivalent stream with an additional close handler. Close handlers are run when the `close()` method is called on the stream, and are executed in the order they were added. All close handlers are run, even if earlier close handlers throw exceptions. If any close handler throws an exception, the first exception thrown will be relayed to the caller of `close()`, with any remaining exceptions added to that exception as suppressed exceptions (unless one of the remaining exceptions is the same exception as the first exception, since an exception cannot suppress itself.) May return itself. This is an intermediate operation. Parameters closeHandler:Runnable A task to execute when the stream is closed Returns:DoubleStream a stream with a handler that is run if the stream is closed Annotations @Override

public DoubleStream onClose(Runnable closeHandler)

Implements java.util.stream.BaseStream.onClose.

Doc from java.util.stream.BaseStream.onClose.

Returns an equivalent stream with an additional close handler. Close handlers are run when the close() method is called on the stream, and are executed in the order they were added. All close handlers are run, even if earlier close handlers throw exceptions. If any close handler throws an exception, the first exception thrown will be relayed to the caller of close(), with any remaining exceptions added to that exception as suppressed exceptions (unless one of the remaining exceptions is the same exception as the first exception, since an exception cannot suppress itself.) May return itself.

This is an intermediate operation.

Parameters

closeHandler:Runnable: A task to execute when the stream is closed

Returns:DoubleStream

a stream with a handler that is run if the stream is closed

Annotations

@Override

parallel	back to summary
public DoubleStream parallel() Implements java.util.stream.DoubleStream.parallel. Doc from java.util.stream.BaseStream.parallel. Returns an equivalent stream that is parallel. May return itself, either because the stream was already parallel, or because the underlying stream state was modified to be parallel. This is an intermediate operation. Returns:DoubleStream a parallel stream Annotations @Override

parallel

back to summary

public DoubleStream parallel()

Implements java.util.stream.DoubleStream.parallel.

Doc from java.util.stream.BaseStream.parallel.

Returns an equivalent stream that is parallel. May return itself, either because the stream was already parallel, or because the underlying stream state was modified to be parallel.

This is an intermediate operation.

Returns:DoubleStream

a parallel stream

Annotations

@Override

peek	back to summary
public DoubleStream peek(DoubleConsumer action) Implements java.util.stream.DoubleStream.peek. Doc from java.util.stream.DoubleStream.peek. Returns a stream consisting of the elements of this stream, additionally performing the provided action on each element as elements are consumed from the resulting stream. This is an intermediate operation. For parallel stream pipelines, the action may be called at whatever time and in whatever thread the element is made available by the upstream operation. If the action modifies shared state, it is responsible for providing the required synchronization. Parameters action:DoubleConsumer a non-interfering action to perform on the elements as they are consumed from the stream Returns:DoubleStream the new stream Annotations @Override

peek

back to summary

public DoubleStream peek(DoubleConsumer action)

Implements java.util.stream.DoubleStream.peek.

Doc from java.util.stream.DoubleStream.peek.

Returns a stream consisting of the elements of this stream, additionally performing the provided action on each element as elements are consumed from the resulting stream.

This is an intermediate operation.

For parallel stream pipelines, the action may be called at whatever time and in whatever thread the element is made available by the upstream operation. If the action modifies shared state, it is responsible for providing the required synchronization.

Parameters

action:DoubleConsumer: a non-interfering action to perform on the elements as they are consumed from the stream

Returns:DoubleStream

the new stream

Annotations

@Override

reduce back to summary

reduce	back to summary
public double reduce(double identity, DoubleBinaryOperator op) Implements java.util.stream.DoubleStream.reduce. Doc from java.util.stream.DoubleStream.reduce. Performs a reduction on the elements of this stream, using the provided identity value and an associative accumulation function, and returns the reduced value. This is equivalent to: `double result = identity; for (double element : this stream) result = accumulator.applyAsDouble(result, element) return result;` but is not constrained to execute sequentially. The `identity` value must be an identity for the accumulator function. This means that for all `x`, `accumulator.apply(identity, x)` is equal to `x`. The `accumulator` function must be an associative function. This is a terminal operation. Parameters identity:double the identity value for the accumulating function op:DoubleBinaryOperator an associative, non-interfering, stateless function for combining two values Returns:double the result of the reduction Annotations @Override

public double reduce(double identity, DoubleBinaryOperator op)

Implements java.util.stream.DoubleStream.reduce.

Doc from java.util.stream.DoubleStream.reduce.

Performs a reduction on the elements of this stream, using the provided identity value and an associative accumulation function, and returns the reduced value. This is equivalent to:

double result = identity;
    for (double element : this stream)
        result = accumulator.applyAsDouble(result, element)
    return result;

but is not constrained to execute sequentially.

The identity value must be an identity for the accumulator function. This means that for all x, accumulator.apply(identity, x) is equal to x. The accumulator function must be an associative function.

This is a terminal operation.

Parameters

identity:double: the identity value for the accumulating function
op:DoubleBinaryOperator: an associative, non-interfering, stateless function for combining two values

Returns:double

the result of the reduction

Annotations

@Override

reduce back to summary

reduce	back to summary
public OptionalDouble reduce(DoubleBinaryOperator op) Implements java.util.stream.DoubleStream.reduce. Doc from java.util.stream.DoubleStream.reduce. Performs a reduction on the elements of this stream, using an associative accumulation function, and returns an `OptionalDouble` describing the reduced value, if any. This is equivalent to: `boolean foundAny = false; double result = null; for (double element : this stream) { if (!foundAny) { foundAny = true; result = element; } else result = accumulator.applyAsDouble(result, element); } return foundAny ? OptionalDouble.of(result) : OptionalDouble.empty();` but is not constrained to execute sequentially. The `accumulator` function must be an associative function. This is a terminal operation. Parameters op:DoubleBinaryOperator an associative, non-interfering, stateless function for combining two values Returns:OptionalDouble the result of the reduction Annotations @Override

public OptionalDouble reduce(DoubleBinaryOperator op)

Implements java.util.stream.DoubleStream.reduce.

Doc from java.util.stream.DoubleStream.reduce.

Performs a reduction on the elements of this stream, using an associative accumulation function, and returns an OptionalDouble describing the reduced value, if any. This is equivalent to:

boolean foundAny = false;
    double result = null;
    for (double element : this stream) {
        if (!foundAny) {
            foundAny = true;
            result = element;
        }
        else
            result = accumulator.applyAsDouble(result, element);
    }
    return foundAny ? OptionalDouble.of(result) : OptionalDouble.empty();

but is not constrained to execute sequentially.

The accumulator function must be an associative function.

This is a terminal operation.

Parameters

op:DoubleBinaryOperator: an associative, non-interfering, stateless function for combining two values

Returns:OptionalDouble

the result of the reduction

Annotations

@Override

sequential	back to summary
public DoubleStream sequential() Implements java.util.stream.DoubleStream.sequential. Doc from java.util.stream.BaseStream.sequential. Returns an equivalent stream that is sequential. May return itself, either because the stream was already sequential, or because the underlying stream state was modified to be sequential. This is an intermediate operation. Returns:DoubleStream a sequential stream Annotations @Override

sequential

back to summary

public DoubleStream sequential()

Implements java.util.stream.DoubleStream.sequential.

Doc from java.util.stream.BaseStream.sequential.

Returns an equivalent stream that is sequential. May return itself, either because the stream was already sequential, or because the underlying stream state was modified to be sequential.

This is an intermediate operation.

Returns:DoubleStream

a sequential stream

Annotations

@Override

skip back to summary

skip	back to summary
public DoubleStream skip(long n) Implements java.util.stream.DoubleStream.skip. Doc from java.util.stream.DoubleStream.skip. Returns a stream consisting of the remaining elements of this stream after discarding the first `n` elements of the stream. If this stream contains fewer than `n` elements then an empty stream will be returned. This is a stateful intermediate operation. Parameters n:long the number of leading elements to skip Returns:DoubleStream the new stream Annotations @Override

public DoubleStream skip(long n)

Implements java.util.stream.DoubleStream.skip.

Doc from java.util.stream.DoubleStream.skip.

Returns a stream consisting of the remaining elements of this stream after discarding the first n elements of the stream. If this stream contains fewer than n elements then an empty stream will be returned.

This is a stateful intermediate operation.

Parameters

n:long: the number of leading elements to skip

Returns:DoubleStream

the new stream

Annotations

@Override

sorted back to summary

sorted	back to summary
public DoubleStream sorted() Implements java.util.stream.DoubleStream.sorted. Doc from java.util.stream.DoubleStream.sorted. Returns a stream consisting of the elements of this stream in sorted order. The elements are compared for equality according to `java.lang.Double#compare(double, double)`. This is a stateful intermediate operation. Returns:DoubleStream the result stream Annotations @Override

public DoubleStream sorted()

Implements java.util.stream.DoubleStream.sorted.

Doc from java.util.stream.DoubleStream.sorted.

Returns a stream consisting of the elements of this stream in sorted order. The elements are compared for equality according to java.lang.Double#compare(double, double).

This is a stateful intermediate operation.

Returns:DoubleStream

the result stream

Annotations

@Override

spliterator	back to summary
public Spliterator.OfDouble spliterator() Implements java.util.stream.DoubleStream.spliterator. Doc from java.util.stream.BaseStream.spliterator. Returns a spliterator for the elements of this stream. This is a terminal operation. Returns:Spliterator.OfDouble the element spliterator for this stream Annotations @Override

spliterator

back to summary

public Spliterator.OfDouble spliterator()

Implements java.util.stream.DoubleStream.spliterator.

Doc from java.util.stream.BaseStream.spliterator.

Returns a spliterator for the elements of this stream.

This is a terminal operation.

Returns:Spliterator.OfDouble

the element spliterator for this stream

Annotations

@Override

sum back to summary

sum	back to summary
public double sum() Implements java.util.stream.DoubleStream.sum. Doc from java.util.stream.DoubleStream.sum. Returns the sum of elements in this stream. Summation is a special case of a reduction. If floating-point summation were exact, this method would be equivalent to: `return reduce(0, Double::sum);` However, since floating-point summation is not exact, the above code is not necessarily equivalent to the summation computation done by this method. The value of a floating-point sum is a function both of the input values as well as the order of addition operations. The order of addition operations of this method is intentionally not defined to allow for implementation flexibility to improve the speed and accuracy of the computed result. In particular, this method may be implemented using compensated summation or other technique to reduce the error bound in the numerical sum compared to a simple summation of `double` values. Because of the unspecified order of operations and the possibility of using differing summation schemes, the output of this method may vary on the same input elements. Various conditions can result in a non-finite sum being computed. This can occur even if the all the elements being summed are finite. If any element is non-finite, the sum will be non-finite: If any element is a NaN, then the final sum will be NaN. If the elements contain one or more infinities, the sum will be infinite or NaN. If the elements contain infinities of opposite sign, the sum will be NaN. If the elements contain infinities of one sign and an intermediate sum overflows to an infinity of the opposite sign, the sum may be NaN. It is possible for intermediate sums of finite values to overflow into opposite-signed infinities; if that occurs, the final sum will be NaN even if the elements are all finite. If all the elements are zero, the sign of zero is not guaranteed to be preserved in the final sum. This is a terminal operation. Returns:double the sum of elements in this stream Annotations @Override

public double sum()

Implements java.util.stream.DoubleStream.sum.

Doc from java.util.stream.DoubleStream.sum.

Returns the sum of elements in this stream. Summation is a special case of a reduction. If floating-point summation were exact, this method would be equivalent to:

return reduce(0, Double::sum);

However, since floating-point summation is not exact, the above code is not necessarily equivalent to the summation computation done by this method.

The value of a floating-point sum is a function both of the input values as well as the order of addition operations. The order of addition operations of this method is intentionally not defined to allow for implementation flexibility to improve the speed and accuracy of the computed result. In particular, this method may be implemented using compensated summation or other technique to reduce the error bound in the numerical sum compared to a simple summation of double values. Because of the unspecified order of operations and the possibility of using differing summation schemes, the output of this method may vary on the same input elements.

Various conditions can result in a non-finite sum being computed. This can occur even if the all the elements being summed are finite. If any element is non-finite, the sum will be non-finite:

If any element is a NaN, then the final sum will be NaN.
If the elements contain one or more infinities, the sum will be infinite or NaN.
- If the elements contain infinities of opposite sign, the sum will be NaN.
- If the elements contain infinities of one sign and an intermediate sum overflows to an infinity of the opposite sign, the sum may be NaN.

It is possible for intermediate sums of finite values to overflow into opposite-signed infinities; if that occurs, the final sum will be NaN even if the elements are all finite. If all the elements are zero, the sign of zero is not guaranteed to be preserved in the final sum.

This is a terminal operation.

Returns:double

the sum of elements in this stream

Annotations

@Override

summaryStatistics back to summary

summaryStatistics	back to summary
public DoubleSummaryStatistics summaryStatistics() Implements java.util.stream.DoubleStream.summaryStatistics. Doc from java.util.stream.DoubleStream.summaryStatistics. Returns a `DoubleSummaryStatistics` describing various summary data about the elements of this stream. This is a special case of a reduction. This is a terminal operation. Returns:DoubleSummaryStatistics a `DoubleSummaryStatistics` describing various summary data about the elements of this stream Annotations @Override

public DoubleSummaryStatistics summaryStatistics()

Implements java.util.stream.DoubleStream.summaryStatistics.

Doc from java.util.stream.DoubleStream.summaryStatistics.

Returns a DoubleSummaryStatistics describing various summary data about the elements of this stream. This is a special case of a reduction.

This is a terminal operation.

Returns:DoubleSummaryStatistics

a DoubleSummaryStatistics describing various summary data about the elements of this stream

Annotations

@Override

toArray	back to summary
public double[] toArray() Implements java.util.stream.DoubleStream.toArray. Doc from java.util.stream.DoubleStream.toArray. Returns an array containing the elements of this stream. This is a terminal operation. Returns:double[] an array containing the elements of this stream Annotations @Override

toArray

back to summary

public double[] toArray()

Implements java.util.stream.DoubleStream.toArray.

Doc from java.util.stream.DoubleStream.toArray.

Returns an array containing the elements of this stream.

This is a terminal operation.

Returns:double[]

an array containing the elements of this stream

Annotations

@Override

unordered	back to summary
public DoubleStream unordered() Implements java.util.stream.BaseStream.unordered. Doc from java.util.stream.BaseStream.unordered. Returns an equivalent stream that is unordered. May return itself, either because the stream was already unordered, or because the underlying stream state was modified to be unordered. This is an intermediate operation. Returns:DoubleStream an unordered stream Annotations @Override

unordered

back to summary

public DoubleStream unordered()

Implements java.util.stream.BaseStream.unordered.

Doc from java.util.stream.BaseStream.unordered.

Returns an equivalent stream that is unordered. May return itself, either because the stream was already unordered, or because the underlying stream state was modified to be unordered.

This is an intermediate operation.

Returns:DoubleStream

an unordered stream

Annotations

@Override

public Class DoubleStreamDecorator

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