public StructObjectInspector initialize()

in src/main/java/org/apache/datasketches/hive/frequencies/GetFrequentItemsFromStringsSketchUDTF.java [50:88]
36 lines of code
8 McCabe index (conditional complexity)

  public StructObjectInspector initialize(final ObjectInspector[] inspectors) throws UDFArgumentException {
    if (inspectors.length != 1 && inspectors.length != 2) {
      throw new UDFArgumentException("One or two arguments expected");
    }

    if (inspectors[0].getCategory() != ObjectInspector.Category.PRIMITIVE) {
      throw new UDFArgumentTypeException(0, "Primitive argument expected, but "
          + inspectors[0].getCategory().name() + " was recieved");
    }
    this.inputObjectInspector = (PrimitiveObjectInspector) inspectors[0];
    if (this.inputObjectInspector.getPrimitiveCategory()
        != PrimitiveObjectInspector.PrimitiveCategory.BINARY) {
      throw new UDFArgumentTypeException(0, "Binary value expected as the first argument, but "
          + this.inputObjectInspector.getPrimitiveCategory().name() + " was recieved");
    }

    if (inspectors.length > 1) {
      if (inspectors[1].getCategory() != ObjectInspector.Category.PRIMITIVE) {
        throw new UDFArgumentTypeException(1, "Primitive argument expected, but "
            + inspectors[1].getCategory().name() + " was recieved");
      }
      this.errorTypeObjectInspector = (PrimitiveObjectInspector) inspectors[1];
      if (this.errorTypeObjectInspector.getPrimitiveCategory()
          != PrimitiveObjectInspector.PrimitiveCategory.STRING) {
        throw new UDFArgumentTypeException(1, "String value expected as the first argument, but "
            + this.errorTypeObjectInspector.getPrimitiveCategory().name() + " was recieved");
      }
    }

    return ObjectInspectorFactory.getStandardStructObjectInspector(
      Arrays.asList("item", "estimate", "lower_bound", "upper_bound"),
      Arrays.asList(
          PrimitiveObjectInspectorFactory.javaStringObjectInspector,
          PrimitiveObjectInspectorFactory.javaLongObjectInspector,
          PrimitiveObjectInspectorFactory.javaLongObjectInspector,
          PrimitiveObjectInspectorFactory.javaLongObjectInspector
      )
    );
  }