Example usage for java.util Spliterators spliterator

Introduction

In this page you can find the example usage for java.util Spliterators spliterator.

Prototype

public static Spliterator.OfDouble spliterator(PrimitiveIterator.OfDouble iterator, long size,
        int characteristics) 

Source Link

Document

Creates a Spliterator.OfDouble using a given DoubleStream.DoubleIterator as the source of elements, and with a given initially reported size.

Usage

From source file:com.simiacryptus.mindseye.lang.Tensor.java

/**
 * Coord stream stream./*from   www.j  a  va2s.c om*/
 *
 * @param parallel the safe
 * @return the stream
 */
@Nonnull
public Stream<Coordinate> coordStream(boolean parallel) {
    //ConcurrentHashSet<Object> distinctBuffer = new ConcurrentHashSet<>();
    //assert distinctBuffer.add(coordinate.copy()) : String.format("Duplicate: %s in %s", coordinate, distinctBuffer);
    return StreamSupport.stream(Spliterators.spliterator(new Iterator<Coordinate>() {

        int cnt = 0;
        @Nonnull
        Coordinate coordinate = new Coordinate();
        @Nonnull
        int[] val = new int[dimensions.length];
        @Nonnull
        int[] safeCopy = new int[dimensions.length];

        @Override
        public boolean hasNext() {
            return cnt < length();
        }

        @Nonnull
        @Override
        public synchronized Coordinate next() {
            if (0 < cnt) {
                for (int i = 0; i < val.length; i++) {
                    if (++val[i] >= dimensions[i]) {
                        val[i] = 0;
                    } else {
                        break;
                    }
                }
            }
            System.arraycopy(val, 0, safeCopy, 0, val.length);
            coordinate.setIndex(cnt++);
            coordinate.setCoords(safeCopy);
            return parallel ? coordinate.copy() : coordinate;
        }
    }, length(), Spliterator.ORDERED), parallel);
}

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From source file:org.briljantframework.array.AbstractBooleanArray.java

@Override
public Stream<Boolean> stream() {
    return StreamSupport.stream(Spliterators.spliterator(new Iterator<Boolean>() {
        int current = 0;

        @Override//from   www. j  a  va  2s  .c o  m
        public boolean hasNext() {
            return current < size();
        }

        @Override
        public Boolean next() {
            return get(current++);
        }
    }, size(), Spliterator.SIZED), false);
}

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From source file:org.briljantframework.array.AbstractComplexArray.java

@Override
public Stream<Complex> stream() {
    return StreamSupport.stream(Spliterators.spliterator(new Iterator<Complex>() {
        int current = 0;

        @Override/*w w  w .  j av  a 2 s.c  o m*/
        public boolean hasNext() {
            return current < size();
        }

        @Override
        public Complex next() {
            return get(current++);
        }
    }, size(), Spliterator.SIZED), false);
}

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From source file:org.briljantframework.array.AbstractDoubleArray.java

@Override
public DoubleStream stream() {
    PrimitiveIterator.OfDouble ofDouble = new PrimitiveIterator.OfDouble() {
        public int current = 0;

        @Override//from   w  w w  . j  av a2s  . c  om
        public double nextDouble() {
            return get(current++);
        }

        @Override
        public boolean hasNext() {
            return current < size();
        }
    };

    Spliterator.OfDouble spliterator = Spliterators.spliterator(ofDouble, size(), Spliterator.SIZED);
    return StreamSupport.doubleStream(spliterator, false);
}

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From source file:org.briljantframework.array.AbstractIntArray.java

@Override
public IntStream stream() {
    PrimitiveIterator.OfInt ofInt = new PrimitiveIterator.OfInt() {
        private int current = 0;

        @Override// w  w w  .  j a  v a 2s .  c o m
        public int nextInt() {
            return get(current++);
        }

        @Override
        public boolean hasNext() {
            return current < size();
        }

    };
    Spliterator.OfInt spliterator = Spliterators.spliterator(ofInt, size(), Spliterator.SIZED);
    return StreamSupport.intStream(spliterator, false);
}

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From source file:org.briljantframework.array.AbstractLongArray.java

@Override
public LongStream stream() {
    PrimitiveIterator.OfLong ofLong = new PrimitiveIterator.OfLong() {
        public int current = 0;

        @Override//from w  w w. j  a  v a2  s.c  o  m
        public long nextLong() {
            return get(current++);
        }

        @Override
        public boolean hasNext() {
            return current < size();
        }
    };
    Spliterator.OfLong spliterator = Spliterators.spliterator(ofLong, size(), Spliterator.SIZED);
    return StreamSupport.longStream(spliterator, false);
}

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From source file:org.dice_research.topicmodeling.io.test.AbstractCorpusIOTest.java

public void writeCorpus() {
    OutputStream out = null;/*  ww w  . j  a  v a2  s .c om*/
    try {
        if (writer != null) {
            out = new BufferedOutputStream(new FileOutputStream(testFile));
            writer.writeCorpus(corpus, out);
        } else if (consumer != null) {
            StreamSupport.stream(Spliterators.spliterator(corpus.iterator(), corpus.getNumberOfDocuments(),
                    Spliterator.DISTINCT & Spliterator.NONNULL), false).forEach(consumer);
        } else {
            Assert.fail("Test is misconfigured since writer==null and consumer==null.");
        }
    } catch (Exception e) {
        e.printStackTrace();
        Assert.fail("Got an Exception: " + e.getLocalizedMessage());
    } finally {
        IOUtils.closeQuietly(out);
        if ((consumer != null) && (consumer instanceof Closeable)) {
            IOUtils.closeQuietly((Closeable) consumer);
        }
    }
}

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