public Tuple exec()

in src/main/java/org/apache/datasketches/pig/tuple/DataToArrayOfDoublesSketchBase.java [98:117]

• 18 lines of code
• 5 McCabe index (conditional complexity)

  public Tuple exec(final Tuple inputTuple) throws IOException {
    if (this.isFirstCall_) {
      // this is to see in the log which way was used by Pig
      Logger.getLogger(getClass()).info("exec is used");
      this.isFirstCall_ = false;
    }
    if (inputTuple == null || inputTuple.size() == 0) {
      return null;
    }
    if (inputTuple.size() != 1) {
      throw new IllegalArgumentException("Input tuple must have 1 bag");
    }

    final ArrayOfDoublesUpdatableSketch sketch =
        new ArrayOfDoublesUpdatableSketchBuilder().setNominalEntries(this.sketchSize_)
          .setSamplingProbability(this.samplingProbability_).setNumberOfValues(this.numValues_).build();
    final DataBag bag = (DataBag) inputTuple.get(0);
    updateSketch(bag, sketch, this.numValues_);
    return Util.tupleFactory.newTuple(new DataByteArray(sketch.compact().toByteArray()));
  }