Example usage for java.nio LongBuffer wrap

Introduction

In this page you can find the example usage for java.nio LongBuffer wrap.

Prototype

public static LongBuffer wrap(long[] array) 

Source Link

Document

Creates a new long buffer by wrapping the given long array.

Usage

From source file:Main.java

public static void main(String[] args) {
    LongBuffer bb = LongBuffer.wrap(new long[] { 0, 1, 2, 3, 4, 5, 6 });
    bb.put(100);//from ww  w .  ja  v  a2  s .c  om
    System.out.println(Arrays.toString(bb.array()));

}

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From source file:Main.java

public static void main(String[] args) {

    LongBuffer byteBuffer = LongBuffer.wrap(new long[] { 1L, 2L, 3L });
    BitSet bitset1 = BitSet.valueOf(byteBuffer);

    // print the sets
    System.out.println("Bitset1:" + bitset1);

}

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From source file:io.druid.segment.IndexMaker.java

private static void makeTimeColumn(final FileSmoosher v9Smoosher, final ProgressIndicator progress,
        final Iterable<Rowboat> theRows, final int rowCount) throws IOException {
    final String section = "make time column";
    progress.startSection(section);/*  ww w  .  j a v a  2 s.  co  m*/

    long[] longs = new long[rowCount];

    int rowNum = 0;
    for (Rowboat theRow : theRows) {
        longs[rowNum++] = theRow.getTimestamp();
    }

    CompressedLongsIndexedSupplier timestamps = CompressedLongsIndexedSupplier.fromLongBuffer(
            LongBuffer.wrap(longs), IndexIO.BYTE_ORDER, CompressedObjectStrategy.DEFAULT_COMPRESSION_STRATEGY

    );

    final ColumnDescriptor.Builder timeBuilder = ColumnDescriptor.builder();
    timeBuilder.setValueType(ValueType.LONG);

    writeColumn(v9Smoosher, new LongGenericColumnPartSerde(timestamps, IndexIO.BYTE_ORDER), timeBuilder,
            "__time");

    progress.stopSection(section);
}

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From source file:io.druid.segment.IndexMaker.java

private static void makeMetricColumn(final FileSmoosher v9Smoosher, final ProgressIndicator progress,
        final Iterable<Rowboat> theRows, final int metricIndex, final String metric,
        final Map<String, ValueType> valueTypes, final Map<String, String> metricTypeNames, final int rowCount,
        final CompressedObjectStrategy.CompressionStrategy compressionStrategy) throws IOException {
    final String section = String.format("make column[%s]", metric);
    progress.startSection(section);/*from   www  . j  a va 2 s .c  o  m*/

    final ColumnDescriptor.Builder metBuilder = ColumnDescriptor.builder();
    ValueType type = valueTypes.get(metric);

    switch (type) {
    case FLOAT: {
        metBuilder.setValueType(ValueType.FLOAT);

        float[] arr = new float[rowCount];
        int rowNum = 0;
        for (Rowboat theRow : theRows) {
            Object obj = theRow.getMetrics()[metricIndex];
            arr[rowNum++] = (obj == null) ? 0 : ((Number) obj).floatValue();
        }

        CompressedFloatsIndexedSupplier compressedFloats = CompressedFloatsIndexedSupplier
                .fromFloatBuffer(FloatBuffer.wrap(arr), IndexIO.BYTE_ORDER, compressionStrategy);

        writeColumn(v9Smoosher, new FloatGenericColumnPartSerde(compressedFloats, IndexIO.BYTE_ORDER),
                metBuilder, metric);
        break;
    }
    case LONG: {
        metBuilder.setValueType(ValueType.LONG);

        long[] arr = new long[rowCount];
        int rowNum = 0;
        for (Rowboat theRow : theRows) {
            Object obj = theRow.getMetrics()[metricIndex];
            arr[rowNum++] = (obj == null) ? 0 : ((Number) obj).longValue();
        }

        CompressedLongsIndexedSupplier compressedLongs = CompressedLongsIndexedSupplier
                .fromLongBuffer(LongBuffer.wrap(arr), IndexIO.BYTE_ORDER, compressionStrategy);

        writeColumn(v9Smoosher, new LongGenericColumnPartSerde(compressedLongs, IndexIO.BYTE_ORDER), metBuilder,
                metric);
        break;
    }
    case COMPLEX:
        String complexType = metricTypeNames.get(metric);

        ComplexMetricSerde serde = ComplexMetrics.getSerdeForType(complexType);

        if (serde == null) {
            throw new ISE("Unknown type[%s]", complexType);
        }

        final GenericIndexed metricColumn = GenericIndexed
                .fromIterable(Iterables.transform(theRows, new Function<Rowboat, Object>() {
                    @Override
                    public Object apply(Rowboat input) {
                        return input.getMetrics()[metricIndex];
                    }
                }), serde.getObjectStrategy());

        metBuilder.setValueType(ValueType.COMPLEX);
        writeColumn(v9Smoosher, new ComplexColumnPartSerde(metricColumn, complexType), metBuilder, metric);
        break;
    default:
        throw new ISE("Unknown type[%s]", type);
    }

    progress.stopSection(section);
}

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