Function IsNullDenseUnion

cpp/src/arrow/array/data.cc:79–86

}

bool IsNullDenseUnion(const ArrayData& data, int64_t i) {
  auto* union_type = checked_cast<const DenseUnionType*>(data.type.get());
  const auto* types = reinterpret_cast<const int8_t*>(data.buffers[1]->data());
  const int child_id = union_type->child_ids()[types[data.offset + i]];
  const auto* offsets = reinterpret_cast<const int32_t*>(data.buffers[2]->data());
  const int64_t child_offset = offsets[data.offset + i];
  return data.child_data[child_id]->IsNull(child_offset);
}

bool IsNullRunEndEncoded(const ArrayData& data, int64_t i) {
  return ArraySpan(data).IsNullRunEndEncoded(i);