private static void hashObj()

in runtime/src/main/java/com/google/cloud/verticals/foundations/dataharmonization/builtins/Core.java [402:449]
47 lines of code
10 McCabe index (conditional complexity)

  private static void hashObj(Data obj, Hasher h) {
    if (obj.isNullOrEmpty()) {
      hashBytes(NIL.getBytes(UTF_8), new byte[] {}, h);
    } else if (obj.isPrimitive()) {
      Primitive primitiveObj = obj.asPrimitive();
      if (primitiveObj.string() != null) {
        hashBytes(STR.getBytes(UTF_8), primitiveObj.string().getBytes(UTF_8), h);
      } else if (primitiveObj.num() != null) {
        byte[] b = ByteBuffer.wrap(new byte[8]).putDouble(primitiveObj.num()).array();
        hashBytes(NUM.getBytes(UTF_8), b, h);
      } else { // Primitive represents boolean value
        byte[] b = new byte[1];
        b[0] = 1;
        if (primitiveObj.bool()) {
          b[0] = 2;
        }
        hashBytes(BOOL.getBytes(UTF_8), b, h);
      }
    } else if (obj.isArray()) {
      Array arrayObj = obj.asArray();
      for (int i = 0; i < arrayObj.size(); ++i) {
        hashObj(arrayObj.getElement(i), h);
      }
    } else if (obj.isContainer()) {
      Container containerObj = obj.asContainer();
      @Var Map<String, Data> sorted = new HashMap<>();

      for (String field : containerObj.nonNullFields()) {
        sorted.put(field, containerObj.getField(field));
      }
      sorted =
          sorted.entrySet().stream()
              .sorted(comparingByKey())
              .collect(
                  toMap(
                      Map.Entry::getKey,
                      Map.Entry::getValue,
                      (e1 /* merge value old */, e2 /* merge value new */) -> e2 /* keep new */,
                      LinkedHashMap::new));
      sorted.forEach(
          (key, val) -> {
            hashBytes(KEY.getBytes(UTF_8), key.getBytes(UTF_8), h);
            hashObj(val, h);
          });
    } else {
      throw new UnsupportedOperationException("Unsupported type to hash: " + obj.getClass() + ".");
    }
  }