Package it.unimi.dsi.fastutil.longs

Examples of it.unimi.dsi.fastutil.longs.LongArrayList

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  @Override
  protected List<?> buildPrimitiveList(int capacity)
  {
    _type = long[].class;
    return capacity > 0 ? new LongArrayList(capacity) : new LongArrayList();
  }
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  @Override
  protected List<?> buildPrimitiveList(int capacity)
  {
    _type = long[].class;
    return capacity > 0 ? new LongArrayList(capacity) : new LongArrayList();
  }
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    private Type type;

    public ChannelIndex(int expectedPositions, TupleInfo tupleInfo)
    {
        this.tupleInfo = tupleInfo;
        valueAddresses = new LongArrayList(expectedPositions);
        slices = ObjectArrayList.wrap(new Slice[1024], 0);
        type = tupleInfo.getType();
    }
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  @Override
  protected List<?> buildPrimitiveList(int capacity)
  {
    _type = Long.class;
    return capacity > 0 ? new LongArrayList(capacity) : new LongArrayList();
  }
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    public PagesIndex(List<Type> types, int expectedPositions, OperatorContext operatorContext)
    {
        this.types = ImmutableList.copyOf(checkNotNull(types, "types is null"));
        this.operatorContext = checkNotNull(operatorContext, "operatorContext is null");
        this.valueAddresses = new LongArrayList(expectedPositions);

        //noinspection rawtypes
        channels = (ObjectArrayList<Block>[]) new ObjectArrayList[types.size()];
        for (int i = 0; i < channels.length; i++) {
            channels[i] = ObjectArrayList.wrap(new Block[1024], 0);
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    // Decode the properties map. In current version, it is not used.
    StreamUtils.decodeMap(new BinaryDecoder(input));

    // Read in all index (timestamp, position pairs).
    LongList timestamps = new LongArrayList(1000);
    LongList positions = new LongArrayList(1000);
    byte[] buf = new byte[Longs.BYTES * 2];

    while (ByteStreams.read(input, buf, 0, buf.length) == buf.length) {
      timestamps.add(Bytes.toLong(buf, 0));
      positions.add(Bytes.toLong(buf, Longs.BYTES));
    }

    return Maps.immutableEntry(timestamps, positions);
  }
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        // crate hash strategy with a single channel blocks -- make sure there is some overlap in values
        List<RandomAccessBlock> channel = ImmutableList.of(
                BlockAssertions.createStringSequenceBlock(10, 20).toRandomAccessBlock(),
                BlockAssertions.createStringSequenceBlock(20, 30).toRandomAccessBlock(),
                BlockAssertions.createStringSequenceBlock(15, 25).toRandomAccessBlock());
        LongArrayList addresses = new LongArrayList();
        for (int blockIndex = 0; blockIndex < channel.size(); blockIndex++) {
            RandomAccessBlock block = channel.get(blockIndex);
            for (int positionIndex = 0; positionIndex < block.getPositionCount(); positionIndex++) {
                addresses.add(encodeSyntheticAddress(blockIndex, positionIndex));
            }
        }
        LookupSource lookupSource = lookupSourceFactoryFactory.createLookupSource(addresses, ImmutableList.of(channel), operatorContext);

        JoinProbeCompiler joinProbeCompiler = new JoinProbeCompiler();
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                   closeTo(-1, EPSILON));
    }

    @Test
    public void testVectorPredict() {
        LongList keys = new LongArrayList();
        keys.add(1);
        keys.add(2);
        keys.add(3);
        keys.add(4);
        MutableSparseVector v = MutableSparseVector.create(keys);
        pred.predict(40, v);
        assertThat(v.get(1),
                   closeTo(4.0, EPSILON));
        assertThat(v.get(2),
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    }

    private static MutableSparseVector extractVector(Collection<? extends Rating> ratings, IdExtractor dimension) {
        // collect the list of unique IDs
        // use a list since we'll be sorting anyway
        LongList ids = new LongArrayList(ratings.size());
        for (Rating r: ratings) {
            ids.add(dimension.getId(r));
        }

        LongKeyDomain keys = LongKeyDomain.fromCollection(ids, false);
        MutableSparseVector msv = MutableSparseVector.create(keys.domain());
        long[] timestamps = null;
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     * Read a list of long IDs from a file, one per line.
     * @param file The file to read.
     * @return A list of longs.
     */
    public static LongList readIdList(File file) throws IOException {
        LongList items = new LongArrayList();
        Closer closer = Closer.create();
        try {
            FileReader fread = closer.register(new FileReader(file));
            BufferedReader buf = closer.register(new BufferedReader(fread));
            String line;
            int lno = 0;
            while ((line = buf.readLine()) != null) {
                lno += 1;
                if (line.trim().isEmpty()) {
                    continue; // skip blank lines
                }
                long item;
                try {
                    item = Long.parseLong(line.trim());
                } catch (IllegalArgumentException ex) {
                    throw new IOException("invalid ID on " + file + " line " + lno + ": " + line);
                }
                items.add(item);
            }
        } catch (Throwable th) {
            throw closer.rethrow(th);
        } finally {
            closer.close();
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