void initAccessor()

in gluten-data/src/main/java/io/glutenproject/vectorized/ArrowColumnVector.java [150:200]

• 50 lines of code
• 21 McCabe index (conditional complexity)

  void initAccessor(ValueVector vector) {
    if (vector instanceof BitVector) {
      accessor = new BooleanAccessor((BitVector) vector);
    } else if (vector instanceof TinyIntVector) {
      accessor = new ByteAccessor((TinyIntVector) vector);
    } else if (vector instanceof SmallIntVector) {
      accessor = new ShortAccessor((SmallIntVector) vector);
    } else if (vector instanceof IntVector) {
      accessor = new IntAccessor((IntVector) vector);
    } else if (vector instanceof BigIntVector) {
      accessor = new LongAccessor((BigIntVector) vector);
    } else if (vector instanceof Float4Vector) {
      accessor = new FloatAccessor((Float4Vector) vector);
    } else if (vector instanceof Float8Vector) {
      accessor = new DoubleAccessor((Float8Vector) vector);
    } else if (vector instanceof DecimalVector) {
      accessor = new DecimalAccessor((DecimalVector) vector);
    } else if (vector instanceof VarCharVector) {
      accessor = new StringAccessor((VarCharVector) vector);
    } else if (vector instanceof VarBinaryVector) {
      accessor = new BinaryAccessor((VarBinaryVector) vector);
    } else if (vector instanceof DateDayVector) {
      accessor = new DateAccessor((DateDayVector) vector);
    } else if (vector instanceof TimeStampMicroTZVector) {
      accessor = new TimestampAccessor((TimeStampMicroTZVector) vector);
    } else if (vector instanceof TimeStampMicroVector) {
      accessor = new TimestampNTZAccessor((TimeStampMicroVector) vector);
    } else if (vector instanceof MapVector) {
      MapVector mapVector = (MapVector) vector;
      accessor = new MapAccessor(mapVector);
    } else if (vector instanceof ListVector) {
      ListVector listVector = (ListVector) vector;
      accessor = new ArrayAccessor(listVector);
    } else if (vector instanceof StructVector) {
      StructVector structVector = (StructVector) vector;
      accessor = new StructAccessor(structVector);

      childColumns = new ArrowColumnVector[structVector.size()];
      for (int i = 0; i < childColumns.length; ++i) {
        childColumns[i] = new ArrowColumnVector(structVector.getVectorById(i));
      }
    } else if (vector instanceof NullVector) {
      accessor = new NullAccessor((NullVector) vector);
    } else if (vector instanceof IntervalYearVector) {
      accessor = new IntervalYearAccessor((IntervalYearVector) vector);
    } else if (vector instanceof DurationVector) {
      accessor = new DurationAccessor((DurationVector) vector);
    } else {
      throw new UnsupportedOperationException();
    }
  }