DistributedLongStream (hazelcast-jet-root 0.5 API)

All Superinterfaces:

AutoCloseable, java.util.stream.BaseStream<Long,java.util.stream.LongStream>, java.util.stream.LongStream
```
public interface DistributedLongStream
extends java.util.stream.LongStream
```
An extension of LongStream that supports distributed stream operations by replacing functional interfaces with their serializable equivalents.

Nested Class Summary
- Nested classes/interfaces inherited from interface java.util.stream.LongStream
  java.util.stream.LongStream.Builder

Method Summary

All Methods Instance Methods Abstract Methods Default Methods
Modifier and Type	Method and Description
`default boolean`	`allMatch(DistributedLongPredicate predicate)` Returns whether all elements of this stream match the provided predicate.
`boolean`	`allMatch(java.util.function.LongPredicate predicate)`
`default boolean`	`anyMatch(DistributedLongPredicate predicate)` Returns whether any elements of this stream match the provided predicate.
`boolean`	`anyMatch(java.util.function.LongPredicate predicate)`
`DistributedDoubleStream`	`asDoubleStream()` Returns a `DoubleStream` consisting of the elements of this stream, converted to `double`.
`DistributedStream<Long>`	`boxed()` Returns a `Stream` consisting of the elements of this stream, each boxed to a `Long`.
`default <R> R`	`collect(DistributedSupplier<R> supplier, DistributedObjLongConsumer<R> accumulator, DistributedBiConsumer<R,R> combiner)` Performs a mutable reduction operation on the elements of this stream.
`<R> R`	`collect(java.util.function.Supplier<R> supplier, java.util.function.ObjLongConsumer<R> accumulator, java.util.function.BiConsumer<R,R> combiner)`
`DistributedLongStream`	`configure(JobConfig jobConfig)`
`DistributedLongStream`	`distinct()` Returns a stream consisting of the distinct elements of this stream.
`default DistributedLongStream`	`filter(DistributedLongPredicate predicate)` Returns a stream consisting of the elements of this stream that match the given predicate.
`DistributedLongStream`	`filter(java.util.function.LongPredicate predicate)`
`default DistributedLongStream`	`flatMap(DistributedLongFunction<? extends java.util.stream.LongStream> mapper)` 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.
`DistributedLongStream`	`flatMap(java.util.function.LongFunction<? extends java.util.stream.LongStream> mapper)`
`DistributedLongStream`	`limit(long maxSize)` Returns a stream consisting of the elements of this stream, truncated to be no longer than `maxSize` in length.
`default DistributedLongStream`	`map(DistributedLongUnaryOperator mapper)` Returns a stream consisting of the results of applying the given function to the elements of this stream.
`DistributedLongStream`	`map(java.util.function.LongUnaryOperator mapper)`
`default DistributedDoubleStream`	`mapToDouble(DistributedLongToDoubleFunction mapper)` Returns a `DoubleStream` consisting of the results of applying the given function to the elements of this stream.
`DistributedDoubleStream`	`mapToDouble(java.util.function.LongToDoubleFunction mapper)`
`default DistributedIntStream`	`mapToInt(DistributedLongToIntFunction mapper)` Returns an `IntStream` consisting of the results of applying the given function to the elements of this stream.
`DistributedIntStream`	`mapToInt(java.util.function.LongToIntFunction mapper)`
`default <U> DistributedStream<U>`	`mapToObj(DistributedLongFunction<? extends U> mapper)` Returns an object-valued `Stream` consisting of the results of applying the given function to the elements of this stream.
`<U> DistributedStream<U>`	`mapToObj(java.util.function.LongFunction<? extends U> mapper)`
`default boolean`	`noneMatch(DistributedLongPredicate predicate)` Returns whether no elements of this stream match the provided predicate.
`boolean`	`noneMatch(java.util.function.LongPredicate predicate)`
`DistributedLongStream`	`parallel()` Returns an equivalent stream that is parallel.
`default DistributedLongStream`	`peek(DistributedLongConsumer action)` 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.
`DistributedLongStream`	`peek(java.util.function.LongConsumer action)`
`default OptionalLong`	`reduce(DistributedLongBinaryOperator op)` Performs a reduction on the elements of this stream, using an associative accumulation function, and returns an `OptionalLong` describing the reduced value, if any.
`OptionalLong`	`reduce(java.util.function.LongBinaryOperator op)`
`default long`	`reduce(long identity, DistributedLongBinaryOperator op)` Performs a reduction on the elements of this stream, using the provided identity value and an associative accumulation function, and returns the reduced value.
`long`	`reduce(long identity, java.util.function.LongBinaryOperator op)`
`DistributedLongStream`	`sequential()` Returns an equivalent stream that is sequential.
`DistributedLongStream`	`skip(long n)` Returns a stream consisting of the remaining elements of this stream after discarding the first `n` elements of the stream.
`DistributedLongStream`	`sorted()` Returns a stream consisting of the elements of this stream in sorted order.

Methods inherited from interface java.util.stream.LongStream
average, builder, concat, count, empty, findAny, findFirst, forEach, forEachOrdered, generate, iterate, iterator, max, min, of, of, range, rangeClosed, spliterator, sum, summaryStatistics, toArray

Methods inherited from interface java.util.stream.BaseStream
close, isParallel, onClose, unordered

- Method Detail
  - filter
```
default DistributedLongStream filter(DistributedLongPredicate predicate)
```
    Returns a stream consisting of the elements of this stream that match the given predicate.
    This is an intermediate operation.
    
    Parameters:
    
    predicate - a non-interfering, stateless predicate to apply to each element to determine if it should be included
    
    Returns:
    
    the new stream
  - map
```
default DistributedLongStream map(DistributedLongUnaryOperator mapper)
```
    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 - a non-interfering, stateless function to apply to each element
    
    Returns:
    
    the new stream
  - mapToObj
```
default <U> DistributedStream<U> mapToObj(DistributedLongFunction<? extends U> mapper)
```
    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.
    
    Type Parameters:
    
    U - the element type of the new stream
    
    Parameters:
    
    mapper - a non-interfering, stateless function to apply to each element
    
    Returns:
    
    the new stream
  - mapToInt
```
default DistributedIntStream mapToInt(DistributedLongToIntFunction mapper)
```
    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 - a non-interfering, stateless function to apply to each element
    
    Returns:
    
    the new stream
  - mapToDouble
```
default DistributedDoubleStream mapToDouble(DistributedLongToDoubleFunction mapper)
```
    Returns a DoubleStream consisting of the results of applying the given function to the elements of this stream.
    This is an intermediate operation.
    
    Parameters:
    
    mapper - a non-interfering, stateless function to apply to each element
    
    Returns:
    
    the new stream
  - flatMap
```
default DistributedLongStream flatMap(DistributedLongFunction<? extends java.util.stream.LongStream> mapper)
```
    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 - a non-interfering, stateless function to apply to each element which produces a LongStream of new values
    
    Returns:
    
    the new stream
    
    See Also:
    
    DistributedStream.flatMap(com.hazelcast.jet.function.DistributedFunction)
  - distinct
```
DistributedLongStream distinct()
```
    Returns a stream consisting of the distinct elements of this stream.
    This is a stateful intermediate operation.
    
    Specified by:
    
    distinct in interface java.util.stream.LongStream
    
    Returns:
    
    the new stream
  - sorted
```
DistributedLongStream sorted()
```
    Returns a stream consisting of the elements of this stream in sorted order.
    This is a stateful intermediate operation.
    
    Specified by:
    
    sorted in interface java.util.stream.LongStream
    
    Returns:
    
    the new stream
  - peek
```
default DistributedLongStream peek(DistributedLongConsumer action)
```
    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 - a non-interfering action to perform on the elements as they are consumed from the stream
    
    Returns:
    
    the new stream
  - limit
```
DistributedLongStream limit(long maxSize)
```
    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.
    
    Specified by:
    
    limit in interface java.util.stream.LongStream
    
    Parameters:
    
    maxSize - the number of elements the stream should be limited to
    
    Returns:
    
    the new stream
    
    Throws:
    
    IllegalArgumentException - if maxSize is negative
  - skip
```
DistributedLongStream skip(long n)
```
    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.
    
    Specified by:
    
    skip in interface java.util.stream.LongStream
    
    Parameters:
    
    n - the number of leading elements to skip
    
    Returns:
    
    the new stream
    
    Throws:
    
    IllegalArgumentException - if n is negative
  - reduce
```
default long reduce(long identity,
                    DistributedLongBinaryOperator op)
```
    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:
```
     long result = identity;
     for (long element : this stream)
         result = accumulator.applyAsLong(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 - the identity value for the accumulating function
    
    op - an associative, non-interfering, stateless function for combining two values
    
    Returns:
    
    the result of the reduction
    
    See Also:
    
    LongStream.sum(), LongStream.min(), LongStream.max(), LongStream.average()
  - reduce
```
default OptionalLong reduce(DistributedLongBinaryOperator op)
```
    Performs a reduction on the elements of this stream, using an associative accumulation function, and returns an OptionalLong describing the reduced value, if any. This is equivalent to:
```
     boolean foundAny = false;
     long result = null;
     for (long element : this stream) {
         if (!foundAny) {
             foundAny = true;
             result = element;
         }
         else
             result = accumulator.applyAsLong(result, element);
     }
     return foundAny ? OptionalLong.of(result) : OptionalLong.empty();
 
```
    but is not constrained to execute sequentially.
    The accumulator function must be an associative function.
    This is a terminal operation.
    Parameters:
    
    op - an associative, non-interfering, stateless function for combining two values
    
    Returns:
    
    the result of the reduction
    
    See Also:
    
    reduce(long, LongBinaryOperator)
  - collect
```
default <R> R collect(DistributedSupplier<R> supplier,
                      DistributedObjLongConsumer<R> accumulator,
                      DistributedBiConsumer<R,R> combiner)
```
    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 (long element : this stream)
         accumulator.accept(result, element);
     return result;
 
```
    Like reduce(long, LongBinaryOperator), collect operations can be parallelized without requiring additional synchronization.
    This is a terminal operation.
    Type Parameters:
    
    R - type of the result
    
    Parameters:
    
    supplier - a function that creates a new result container. For a parallel execution, this function may be called multiple times and must return a fresh value each time.
    
    accumulator - an associative, non-interfering, stateless function for incorporating an additional element into a result
    
    combiner - an associative, non-interfering, stateless function for combining two values, which must be compatible with the accumulator function
    
    Returns:
    
    the result of the reduction
    
    See Also:
    
    Stream.collect(Supplier, BiConsumer, BiConsumer)
  - anyMatch
```
default boolean anyMatch(DistributedLongPredicate predicate)
```
    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 - a non-interfering, stateless predicate to apply to elements of this stream
    
    Returns:
    
    true if any elements of the stream match the provided predicate, otherwise false
  - allMatch
```
default boolean allMatch(DistributedLongPredicate predicate)
```
    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 - a non-interfering, stateless predicate to apply to elements of this stream
    
    Returns:
    
    true if either all elements of the stream match the provided predicate or the stream is empty, otherwise false
  - noneMatch
```
default boolean noneMatch(DistributedLongPredicate predicate)
```
    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 - a non-interfering, stateless predicate to apply to elements of this stream
    
    Returns:
    
    true if either no elements of the stream match the provided predicate or the stream is empty, otherwise false
  - asDoubleStream
```
DistributedDoubleStream asDoubleStream()
```
    Returns a DoubleStream consisting of the elements of this stream, converted to double.
    This is an intermediate operation.
    
    Specified by:
    
    asDoubleStream in interface java.util.stream.LongStream
    
    Returns:
    
    a DoubleStream consisting of the elements of this stream, converted to double
  - boxed
```
DistributedStream<Long> boxed()
```
    Returns a Stream consisting of the elements of this stream, each boxed to a Long.
    This is an intermediate operation.
    
    Specified by:
    
    boxed in interface java.util.stream.LongStream
    
    Returns:
    
    a Stream consistent of the elements of this stream, each boxed to Long
  - sequential
```
DistributedLongStream 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.
    
    Specified by:
    
    sequential in interface java.util.stream.BaseStream<Long,java.util.stream.LongStream>
    
    Specified by:
    
    sequential in interface java.util.stream.LongStream
    
    Returns:
    
    a sequential stream
  - parallel
```
DistributedLongStream 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.
    
    Specified by:
    
    parallel in interface java.util.stream.BaseStream<Long,java.util.stream.LongStream>
    
    Specified by:
    
    parallel in interface java.util.stream.LongStream
    
    Returns:
    
    a parallel stream
  - filter
```
DistributedLongStream filter(java.util.function.LongPredicate predicate)
```
    Specified by:
    
    filter in interface java.util.stream.LongStream
  - map
```
DistributedLongStream map(java.util.function.LongUnaryOperator mapper)
```
    Specified by:
    
    map in interface java.util.stream.LongStream
  - mapToObj
```
<U> DistributedStream<U> mapToObj(java.util.function.LongFunction<? extends U> mapper)
```
    Specified by:
    
    mapToObj in interface java.util.stream.LongStream
  - mapToInt
```
DistributedIntStream mapToInt(java.util.function.LongToIntFunction mapper)
```
    Specified by:
    
    mapToInt in interface java.util.stream.LongStream
  - mapToDouble
```
DistributedDoubleStream mapToDouble(java.util.function.LongToDoubleFunction mapper)
```
    Specified by:
    
    mapToDouble in interface java.util.stream.LongStream
  - flatMap
```
DistributedLongStream flatMap(java.util.function.LongFunction<? extends java.util.stream.LongStream> mapper)
```
    Specified by:
    
    flatMap in interface java.util.stream.LongStream
  - peek
```
DistributedLongStream peek(java.util.function.LongConsumer action)
```
    Specified by:
    
    peek in interface java.util.stream.LongStream
  - reduce
```
long reduce(long identity,
            java.util.function.LongBinaryOperator op)
```
    Specified by:
    
    reduce in interface java.util.stream.LongStream
  - reduce
```
OptionalLong reduce(java.util.function.LongBinaryOperator op)
```
    Specified by:
    
    reduce in interface java.util.stream.LongStream
  - collect
```
<R> R collect(java.util.function.Supplier<R> supplier,
              java.util.function.ObjLongConsumer<R> accumulator,
              java.util.function.BiConsumer<R,R> combiner)
```
    Specified by:
    
    collect in interface java.util.stream.LongStream
  - anyMatch
```
boolean anyMatch(java.util.function.LongPredicate predicate)
```
    Specified by:
    
    anyMatch in interface java.util.stream.LongStream
  - allMatch
```
boolean allMatch(java.util.function.LongPredicate predicate)
```
    Specified by:
    
    allMatch in interface java.util.stream.LongStream
  - noneMatch
```
boolean noneMatch(java.util.function.LongPredicate predicate)
```
    Specified by:
    
    noneMatch in interface java.util.stream.LongStream
  - configure
```
DistributedLongStream configure(JobConfig jobConfig)
```
    Parameters:
    
    jobConfig - Job configuration which will be used while executing underlying DAG
    
    Returns:
    
    the new stream

Interface DistributedLongStream

Nested Class Summary

Nested classes/interfaces inherited from interface java.util.stream.LongStream

Method Summary

Methods inherited from interface java.util.stream.LongStream

Methods inherited from interface java.util.stream.BaseStream

Method Detail

filter

map

mapToObj

mapToInt

mapToDouble

flatMap

distinct

sorted

peek

limit

skip

reduce

reduce

collect

anyMatch

allMatch

noneMatch

asDoubleStream

boxed

sequential

parallel

filter

map

mapToObj

mapToInt

mapToDouble

flatMap

peek

reduce

reduce

collect

anyMatch

allMatch

noneMatch

configure