コード例 #1
0
  @Override
  public Block copyPositions(List<Integer> positions) {
    int finalLength = positions.stream().mapToInt(this::getLength).sum();
    SliceOutput newSlice = Slices.allocate(finalLength).getOutput();
    int[] newOffsets = new int[positions.size() + 1];
    boolean[] newValueIsNull = new boolean[positions.size()];

    for (int i = 0; i < positions.size(); i++) {
      int position = positions.get(i);
      if (isEntryNull(position)) {
        newValueIsNull[i] = true;
      } else {
        newSlice.appendBytes(
            sliceOutput
                .getUnderlyingSlice()
                .getBytes(getPositionOffset(position), getLength(position)));
      }
      newOffsets[i + 1] = newSlice.size();
    }
    return new VariableWidthBlock(positions.size(), newSlice.slice(), newOffsets, newValueIsNull);
  }
コード例 #2
0
 @Override
 protected Slice getRawSlice() {
   return sliceOutput.getUnderlyingSlice();
 }