DoubleCacheStream

All Superinterfaces:

java.lang.AutoCloseable, BaseCacheStream<java.lang.Double,java.util.stream.DoubleStream>, java.util.stream.BaseStream<java.lang.Double,java.util.stream.DoubleStream>, java.util.stream.DoubleStream
```
public interface DoubleCacheStream
extends java.util.stream.DoubleStream, BaseCacheStream<java.lang.Double,java.util.stream.DoubleStream>
```
A DoubleStream that has additional methods to allow for Serializable instances. Please see CacheStream for additional details about various methods.

Since:

9.0

Nested Class Summary
- Nested classes/interfaces inherited from interface java.util.stream.DoubleStream
  java.util.stream.DoubleStream.Builder
- Nested classes/interfaces inherited from interface org.infinispan.BaseCacheStream
  BaseCacheStream.SegmentCompletionListener

Method Summary

All Methods Instance Methods Abstract Methods Default Methods
Modifier and Type	Method and Description
`default boolean`	`allMatch(SerializableDoublePredicate predicate)` Same as `DoubleStream.allMatch(DoublePredicate)` except that the DoublePredicate must also implement `Serializable`
`default boolean`	`anyMatch(SerializableDoublePredicate predicate)` Same as `DoubleStream.anyMatch(DoublePredicate)` except that the DoublePredicate must also implement `Serializable`
`CacheStream<java.lang.Double>`	`boxed()`
`default <R> R`	`collect(SerializableSupplier<R> supplier, SerializableObjDoubleConsumer<R> accumulator, SerializableBiConsumer<R,R> combiner)` Same as `DoubleStream.collect(Supplier, ObjDoubleConsumer, BiConsumer)` except that the arguments must also implement `Serializable`
`DoubleCacheStream`	`disableRehashAware()` Disables tracking of rehash events that could occur to the underlying cache.
`DoubleCacheStream`	`distinct()`
`DoubleCacheStream`	`distributedBatchSize(int batchSize)` Controls how many keys are returned from a remote node when using a stream terminal operation with a distributed cache to back this stream.
`DoubleCacheStream`	`filter(java.util.function.DoublePredicate predicate)`
`default DoubleCacheStream`	`filter(SerializableDoublePredicate predicate)` Same as `filter(DoublePredicate)` except that the DoublePredicate must also implement `Serializable`
`DoubleCacheStream`	`filterKeys(java.util.Set<?> keys)` Filters which entries are returned by only returning ones that map to the given key.
`DoubleCacheStream`	`filterKeySegments(java.util.Set<java.lang.Integer> segments)` Filters which entries are returned by what segment they are present in.
`DoubleCacheStream`	`flatMap(java.util.function.DoubleFunction<? extends java.util.stream.DoubleStream> mapper)`
`default DoubleCacheStream`	`flatMap(SerializableDoubleFunction<? extends java.util.stream.DoubleStream> mapper)` Same as `flatMap(DoubleFunction)` except that the DoubleFunction must also implement `Serializable`
`<K,V> void`	`forEach(java.util.function.ObjDoubleConsumer<Cache<K,V>> action)` Same as `DoubleStream.forEach(DoubleConsumer)` except that it takes an `ObjDoubleConsumer` that provides access to the underlying `Cache` that is backing this stream.
`default void`	`forEach(SerializableDoubleConsumer action)` Same as `DoubleStream.forEach(DoubleConsumer)` except that the DoubleConsumer must also implement `Serializable`
`default <K,V> void`	`forEach(SerializableObjDoubleConsumer<Cache<K,V>> action)` Same as `forEach(ObjDoubleConsumer)` except that the `BiConsumer` must also implement `Serializable`
`DoubleCacheStream`	`limit(long maxSize)`
`DoubleCacheStream`	`map(java.util.function.DoubleUnaryOperator mapper)`
`default DoubleCacheStream`	`map(SerializableDoubleUnaryOperator mapper)` Same as `map(DoubleUnaryOperator)` except that the DoubleUnaryOperator must also implement `Serializable`
`IntCacheStream`	`mapToInt(java.util.function.DoubleToIntFunction mapper)`
`default IntCacheStream`	`mapToInt(SerializableDoubleToIntFunction mapper)` Same as `mapToInt(DoubleToIntFunction)` except that the DoubleToIntFunction must also implement `Serializable`
`LongCacheStream`	`mapToLong(java.util.function.DoubleToLongFunction mapper)`
`default LongCacheStream`	`mapToLong(SerializableDoubleToLongFunction mapper)` Same as `mapToLong(DoubleToLongFunction)` except that the DoubleToLongFunction must also implement `Serializable`
`<U> CacheStream<U>`	`mapToObj(java.util.function.DoubleFunction<? extends U> mapper)`
`default <U> CacheStream<U>`	`mapToObj(SerializableDoubleFunction<? extends U> mapper)` Same as `mapToObj(DoubleFunction)` except that the DoubleFunction must also implement `Serializable`
`default boolean`	`noneMatch(SerializableDoublePredicate predicate)` Same as `DoubleStream.noneMatch(DoublePredicate)` except that the DoublePredicate must also implement `Serializable`
`DoubleCacheStream`	`onClose(java.lang.Runnable closeHandler)`
`DoubleCacheStream`	`parallel()`
`DoubleCacheStream`	`parallelDistribution()` This would enable sending requests to all other remote nodes when a terminal operator is performed.
`DoubleCacheStream`	`peek(java.util.function.DoubleConsumer action)`
`default DoubleCacheStream`	`peek(SerializableDoubleConsumer action)` Same as `flatMap(DoubleFunction)` except that the DoubleFunction must also implement `Serializable`
`default double`	`reduce(double identity, SerializableDoubleBinaryOperator op)` Same as `DoubleStream.reduce(double, DoubleBinaryOperator)` except that the DoubleBinaryOperator must also implement `Serializable`
`default java.util.OptionalDouble`	`reduce(SerializableDoubleBinaryOperator op)` Same as `DoubleStream.reduce(DoubleBinaryOperator)` except that the DoubleBinaryOperator must also implement `Serializable`
`DoubleCacheStream`	`segmentCompletionListener(BaseCacheStream.SegmentCompletionListener listener)` Allows registration of a segment completion listener that is notified when a segment has completed processing.
`DoubleCacheStream`	`sequential()`
`DoubleCacheStream`	`sequentialDistribution()` This would disable sending requests to all other remote nodes compared to one at a time.
`DoubleCacheStream`	`skip(long n)`
`DoubleCacheStream`	`sorted()`
`DoubleCacheStream`	`timeout(long timeout, java.util.concurrent.TimeUnit unit)` Sets a given time to wait for a remote operation to respond by.
`DoubleCacheStream`	`unordered()`

Methods inherited from interface java.util.stream.DoubleStream
allMatch, anyMatch, average, builder, collect, concat, count, empty, findAny, findFirst, forEach, forEachOrdered, generate, iterate, iterator, max, min, noneMatch, of, of, reduce, reduce, spliterator, sum, summaryStatistics, toArray

Methods inherited from interface org.infinispan.BaseCacheStream
filterKeySegments

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

- Method Detail
  - sequentialDistribution
```
DoubleCacheStream sequentialDistribution()
```
    This would disable sending requests to all other remote nodes compared to one at a time. This can reduce memory pressure on the originator node at the cost of performance.
    Parallel distribution is enabled by default except for CacheStream.iterator() and CacheStream.spliterator()
    
    Specified by:
    
    sequentialDistribution in interface BaseCacheStream<java.lang.Double,java.util.stream.DoubleStream>
    
    Returns:
    
    a stream with parallel distribution disabled.
  - parallelDistribution
```
DoubleCacheStream parallelDistribution()
```
    Description copied from interface: BaseCacheStream
    
    This would enable sending requests to all other remote nodes when a terminal operator is performed. This requires additional overhead as it must process results concurrently from various nodes, but should perform faster in the majority of cases.
    Parallel distribution is enabled by default except for CacheStream.iterator() and CacheStream.spliterator()
    
    Specified by:
    
    parallelDistribution in interface BaseCacheStream<java.lang.Double,java.util.stream.DoubleStream>
    
    Returns:
    
    a stream with parallel distribution enabled.
  - filterKeySegments
```
DoubleCacheStream filterKeySegments(java.util.Set<java.lang.Integer> segments)
```
    Filters which entries are returned by what segment they are present in. This method can be substantially more efficient than using a regular CacheStream.filter(Predicate) method as this can control what nodes are asked for data and what entries are read from the underlying CacheStore if present.
    
    Specified by:
    
    filterKeySegments in interface BaseCacheStream<java.lang.Double,java.util.stream.DoubleStream>
    
    Parameters:
    
    segments - The segments to use for this stream operation. Any segments not in this set will be ignored.
    
    Returns:
    
    a stream with the segments filtered.
  - filterKeys
```
DoubleCacheStream filterKeys(java.util.Set<?> keys)
```
    Filters which entries are returned by only returning ones that map to the given key. This method will be faster than a regular CacheStream.filter(Predicate) if the filter is holding references to the same keys.
    
    Specified by:
    
    filterKeys in interface BaseCacheStream<java.lang.Double,java.util.stream.DoubleStream>
    
    Parameters:
    
    keys - The keys that this stream will only operate on.
    
    Returns:
    
    a stream with the keys filtered.
  - distributedBatchSize
```
DoubleCacheStream distributedBatchSize(int batchSize)
```
    Controls how many keys are returned from a remote node when using a stream terminal operation with a distributed cache to back this stream. This value is ignored when terminal operators that don't track keys are used. Key tracking terminal operators are CacheStream.iterator(), CacheStream.spliterator(), CacheStream.forEach(Consumer). Please see those methods for additional information on how this value may affect them.
    This value may be used in the case of a a terminal operator that doesn't track keys if an intermediate operation is performed that requires bringing keys locally to do computations. Examples of such intermediate operations are CacheStream.sorted(), CacheStream.sorted(Comparator), CacheStream.distinct(), CacheStream.limit(long), CacheStream.skip(long)
    
    This value is always ignored when this stream is backed by a cache that is not distributed as all values are already local.
    
    Specified by:
    
    distributedBatchSize in interface BaseCacheStream<java.lang.Double,java.util.stream.DoubleStream>
    
    Parameters:
    
    batchSize - The size of each batch. This defaults to the state transfer chunk size.
    
    Returns:
    
    a stream with the batch size updated
  - segmentCompletionListener
```
DoubleCacheStream segmentCompletionListener(BaseCacheStream.SegmentCompletionListener listener)
```
    Allows registration of a segment completion listener that is notified when a segment has completed processing. If the terminal operator has a short circuit this listener may never be called.
    This method is designed for the sole purpose of use with the CacheStream.iterator() to allow for a user to track completion of segments as they are returned from the iterator. Behavior of other methods is not specified. Please see CacheStream.iterator() for more information.
    
    Multiple listeners may be registered upon multiple invocations of this method. The ordering of notified listeners is not specified.
    
    This is only used if this stream did not invoke BaseCacheStream.disableRehashAware() and has no flat map based operations. If this is done no segments will be notified.
    
    Specified by:
    
    segmentCompletionListener in interface BaseCacheStream<java.lang.Double,java.util.stream.DoubleStream>
    
    Parameters:
    
    listener - The listener that will be called back as segments are completed.
    
    Returns:
    
    a stream with the listener registered.
  - disableRehashAware
```
DoubleCacheStream disableRehashAware()
```
    Disables tracking of rehash events that could occur to the underlying cache. If a rehash event occurs while a terminal operation is being performed it is possible for some values that are in the cache to not be found. Note that you will never have an entry duplicated when rehash awareness is disabled, only lost values.
    Most terminal operations will run faster with rehash awareness disabled even without a rehash occuring. However if a rehash occurs with this disabled be prepared to possibly receive only a subset of values.
    
    Specified by:
    
    disableRehashAware in interface BaseCacheStream<java.lang.Double,java.util.stream.DoubleStream>
    
    Returns:
    
    a stream with rehash awareness disabled.
  - timeout
```
DoubleCacheStream timeout(long timeout,
                          java.util.concurrent.TimeUnit unit)
```
    Sets a given time to wait for a remote operation to respond by. This timeout does nothing if the terminal operation does not go remote.
    If a timeout does occur then a TimeoutException is thrown from the terminal operation invoking thread or on the next call to the Iterator or Spliterator.
    
    Note that if a rehash occurs this timeout value is reset for the subsequent retry if rehash aware is enabled.
    
    Specified by:
    
    timeout in interface BaseCacheStream<java.lang.Double,java.util.stream.DoubleStream>
    
    Parameters:
    
    timeout - the maximum time to wait
    
    unit - the time unit of the timeout argument
    
    Returns:
    
    a stream with the timeout set
  - filter
```
DoubleCacheStream filter(java.util.function.DoublePredicate predicate)
```
    Specified by:
    
    filter in interface java.util.stream.DoubleStream
    
    Returns:
    
    the new cache double stream
  - filter
```
default DoubleCacheStream filter(SerializableDoublePredicate predicate)
```
    Same as filter(DoublePredicate) except that the DoublePredicate must also implement Serializable
    The compiler will pick this overload for lambda parameters, making them Serializable
    
    Parameters:
    
    predicate - a non-interfering, stateless predicate to apply to each element to determine if it should be included
    
    Returns:
    
    the new cache double stream
  - map
```
DoubleCacheStream map(java.util.function.DoubleUnaryOperator mapper)
```
    Specified by:
    
    map in interface java.util.stream.DoubleStream
    
    Returns:
    
    the new cache double stream
  - map
```
default DoubleCacheStream map(SerializableDoubleUnaryOperator mapper)
```
    Same as map(DoubleUnaryOperator) except that the DoubleUnaryOperator must also implement Serializable
    The compiler will pick this overload for lambda parameters, making them Serializable
    
    Parameters:
    
    mapper - a non-interfering, stateless function to apply to each element
    
    Returns:
    
    the new cache double stream
  - mapToObj
```
<U> CacheStream<U> mapToObj(java.util.function.DoubleFunction<? extends U> mapper)
```
    Specified by:
    
    mapToObj in interface java.util.stream.DoubleStream
    
    Returns:
    
    the new cache stream
  - mapToObj
```
default <U> CacheStream<U> mapToObj(SerializableDoubleFunction<? extends U> mapper)
```
    Same as mapToObj(DoubleFunction) except that the DoubleFunction must also implement Serializable
    The compiler will pick this overload for lambda parameters, making them Serializable
    
    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 cache stream
  - mapToInt
```
IntCacheStream mapToInt(java.util.function.DoubleToIntFunction mapper)
```
    Specified by:
    
    mapToInt in interface java.util.stream.DoubleStream
    
    Returns:
    
    the new cache int stream
  - mapToInt
```
default IntCacheStream mapToInt(SerializableDoubleToIntFunction mapper)
```
    Same as mapToInt(DoubleToIntFunction) except that the DoubleToIntFunction must also implement Serializable
    The compiler will pick this overload for lambda parameters, making them Serializable
    
    Parameters:
    
    mapper - a non-interfering, stateless function to apply to each element
    
    Returns:
    
    the new cache int stream
  - mapToLong
```
LongCacheStream mapToLong(java.util.function.DoubleToLongFunction mapper)
```
    Specified by:
    
    mapToLong in interface java.util.stream.DoubleStream
    
    Returns:
    
    the new cache long stream
  - mapToLong
```
default LongCacheStream mapToLong(SerializableDoubleToLongFunction mapper)
```
    Same as mapToLong(DoubleToLongFunction) except that the DoubleToLongFunction must also implement Serializable
    The compiler will pick this overload for lambda parameters, making them Serializable
    
    Parameters:
    
    mapper - a non-interfering, stateless function to apply to each element
    
    Returns:
    
    the new cache long stream
  - flatMap
```
DoubleCacheStream flatMap(java.util.function.DoubleFunction<? extends java.util.stream.DoubleStream> mapper)
```
    Specified by:
    
    flatMap in interface java.util.stream.DoubleStream
    
    Returns:
    
    the new cache double stream
  - flatMap
```
default DoubleCacheStream flatMap(SerializableDoubleFunction<? extends java.util.stream.DoubleStream> mapper)
```
    Same as flatMap(DoubleFunction) except that the DoubleFunction must also implement Serializable
    The compiler will pick this overload for lambda parameters, making them Serializable
    
    Parameters:
    
    mapper - a non-interfering, stateless function to apply to each element which produces a DoubleStream of new values
    
    Returns:
    
    the new cache double stream
  - distinct
```
DoubleCacheStream distinct()
```
    Specified by:
    
    distinct in interface java.util.stream.DoubleStream
    
    Returns:
    
    the new cache double stream
  - sorted
```
DoubleCacheStream sorted()
```
    Specified by:
    
    sorted in interface java.util.stream.DoubleStream
    
    Returns:
    
    the new cache double stream
  - peek
```
DoubleCacheStream peek(java.util.function.DoubleConsumer action)
```
    Specified by:
    
    peek in interface java.util.stream.DoubleStream
    
    Returns:
    
    the new cache double stream
  - peek
```
default DoubleCacheStream peek(SerializableDoubleConsumer action)
```
    Same as flatMap(DoubleFunction) except that the DoubleFunction must also implement Serializable
    The compiler will pick this overload for lambda parameters, making them Serializable
    
    Parameters:
    
    action - a non-interfering action to perform on the elements as they are consumed from the stream
    
    Returns:
    
    the new cache double stream
  - limit
```
DoubleCacheStream limit(long maxSize)
```
    Specified by:
    
    limit in interface java.util.stream.DoubleStream
    
    Returns:
    
    the new cache double stream
  - skip
```
DoubleCacheStream skip(long n)
```
    Specified by:
    
    skip in interface java.util.stream.DoubleStream
    
    Returns:
    
    the new cache double stream
  - forEach
```
default void forEach(SerializableDoubleConsumer action)
```
    Same as DoubleStream.forEach(DoubleConsumer) except that the DoubleConsumer must also implement Serializable
    The compiler will pick this overload for lambda parameters, making them Serializable
    
    Parameters:
    
    action - a non-interfering action to perform on the elements
  - forEach
```
<K,V> void forEach(java.util.function.ObjDoubleConsumer<Cache<K,V>> action)
```
    Same as DoubleStream.forEach(DoubleConsumer) except that it takes an ObjDoubleConsumer that provides access to the underlying Cache that is backing this stream.
    Note that the CacheAware interface is not supported for injection using this method as the cache is provided in the consumer directly.
    
    Type Parameters:
    
    K - key type of the cache
    
    V - value type of the cache
    
    Parameters:
    
    action - consumer to be ran for each element in the stream
  - forEach
```
default <K,V> void forEach(SerializableObjDoubleConsumer<Cache<K,V>> action)
```
    Same as forEach(ObjDoubleConsumer) except that the BiConsumer must also implement Serializable
    
    Type Parameters:
    
    K - key type of the cache
    
    V - value type of the cache
    
    Parameters:
    
    action - consumer to be ran for each element in the stream
  - reduce
```
default double reduce(double identity,
                      SerializableDoubleBinaryOperator op)
```
    Same as DoubleStream.reduce(double, DoubleBinaryOperator) except that the DoubleBinaryOperator must also implement Serializable
    The compiler will pick this overload for lambda parameters, making them Serializable
    
    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
  - reduce
```
default java.util.OptionalDouble reduce(SerializableDoubleBinaryOperator op)
```
    Same as DoubleStream.reduce(DoubleBinaryOperator) except that the DoubleBinaryOperator must also implement Serializable
    The compiler will pick this overload for lambda parameters, making them Serializable
    
    Parameters:
    
    op - an associative, non-interfering, stateless function for combining two values
    
    Returns:
    
    the result of the reduction
  - collect
```
default <R> R collect(SerializableSupplier<R> supplier,
                      SerializableObjDoubleConsumer<R> accumulator,
                      SerializableBiConsumer<R,R> combiner)
```
    Same as DoubleStream.collect(Supplier, ObjDoubleConsumer, BiConsumer) except that the arguments must also implement Serializable
    The compiler will pick this overload for lambda parameters, making them Serializable
    
    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
  - anyMatch
```
default boolean anyMatch(SerializableDoublePredicate predicate)
```
    Same as DoubleStream.anyMatch(DoublePredicate) except that the DoublePredicate must also implement Serializable
    The compiler will pick this overload for lambda parameters, making them Serializable
    
    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(SerializableDoublePredicate predicate)
```
    Same as DoubleStream.allMatch(DoublePredicate) except that the DoublePredicate must also implement Serializable
    The compiler will pick this overload for lambda parameters, making them Serializable
    
    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(SerializableDoublePredicate predicate)
```
    Same as DoubleStream.noneMatch(DoublePredicate) except that the DoublePredicate must also implement Serializable
    The compiler will pick this overload for lambda parameters, making them Serializable
    
    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
  - boxed
```
CacheStream<java.lang.Double> boxed()
```
    Specified by:
    
    boxed in interface java.util.stream.DoubleStream
    
    Returns:
    
    the new cache stream containing doubles
  - sequential
```
DoubleCacheStream sequential()
```
    Specified by:
    
    sequential in interface java.util.stream.BaseStream<java.lang.Double,java.util.stream.DoubleStream>
    
    Specified by:
    
    sequential in interface java.util.stream.DoubleStream
    
    Returns:
    
    a sequential cache double stream
  - parallel
```
DoubleCacheStream parallel()
```
    Specified by:
    
    parallel in interface java.util.stream.BaseStream<java.lang.Double,java.util.stream.DoubleStream>
    
    Specified by:
    
    parallel in interface java.util.stream.DoubleStream
    
    Returns:
    
    a parallel cache double stream
  - unordered
```
DoubleCacheStream unordered()
```
    Specified by:
    
    unordered in interface java.util.stream.BaseStream<java.lang.Double,java.util.stream.DoubleStream>
    
    Returns:
    
    an unordered cache double stream
  - onClose
```
DoubleCacheStream onClose(java.lang.Runnable closeHandler)
```
    Specified by:
    
    onClose in interface java.util.stream.BaseStream<java.lang.Double,java.util.stream.DoubleStream>
    
    Returns:
    
    a cache double stream with the handler applied

Interface DoubleCacheStream

Nested Class Summary

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

Nested classes/interfaces inherited from interface org.infinispan.BaseCacheStream

Method Summary

Methods inherited from interface java.util.stream.DoubleStream

Methods inherited from interface org.infinispan.BaseCacheStream

Methods inherited from interface java.util.stream.BaseStream

Method Detail

sequentialDistribution

parallelDistribution

filterKeySegments

filterKeys

distributedBatchSize

segmentCompletionListener

disableRehashAware

timeout

filter

filter

map

map

mapToObj

mapToObj

mapToInt

mapToInt

mapToLong

mapToLong

flatMap

flatMap

distinct

sorted

peek

peek

limit

skip

forEach

forEach

forEach

reduce

reduce

collect

anyMatch

allMatch

noneMatch

boxed

sequential

parallel

unordered

onClose