Method CreateFor

cpp/src/arrow/builder.cc:169–184

  template <typename ValueType>
  Status CreateFor() {
    using AdaptiveBuilderType = DictionaryBuilder<ValueType>;
    if (dictionary != nullptr) {
      out->reset(new AdaptiveBuilderType(dictionary, pool));
    } else if (exact_index_type) {
      if (!is_integer(index_type->id())) {
        return Status::TypeError("MakeBuilder: invalid index type ", *index_type);
      }
      out->reset(new internal::DictionaryBuilderBase<TypeErasedIntBuilder, ValueType>(
          index_type, value_type, pool));
    } else {
      auto start_int_size = index_type->byte_width();
      out->reset(new AdaptiveBuilderType(start_int_size, value_type, pool));
    }
    return Status::OK();
  }

  Status Make() { return VisitTypeInline(*value_type, this); }