| 168 | } |
| 169 | |
| 170 | Status Encode(const ExecValue& data, int64_t batch_length, |
| 171 | uint8_t** encoded_bytes) override { |
| 172 | auto handle_next_valid_value = [&encoded_bytes](std::string_view bytes) { |
| 173 | auto& encoded_ptr = *encoded_bytes++; |
| 174 | *encoded_ptr++ = kValidByte; |
| 175 | util::SafeStore(encoded_ptr, static_cast<Offset>(bytes.size())); |
| 176 | encoded_ptr += sizeof(Offset); |
| 177 | memcpy(encoded_ptr, bytes.data(), bytes.size()); |
| 178 | encoded_ptr += bytes.size(); |
| 179 | }; |
| 180 | auto handle_next_null_value = [&encoded_bytes]() { |
| 181 | auto& encoded_ptr = *encoded_bytes++; |
| 182 | *encoded_ptr++ = kNullByte; |
| 183 | util::SafeStore(encoded_ptr, static_cast<Offset>(0)); |
| 184 | encoded_ptr += sizeof(Offset); |
| 185 | }; |
| 186 | if (data.is_array()) { |
| 187 | ARROW_DCHECK_EQ(data.length(), batch_length); |
| 188 | VisitArraySpanInline<T>(data.array, handle_next_valid_value, |
| 189 | handle_next_null_value); |
| 190 | } else { |
| 191 | const auto& scalar = data.scalar_as<BaseBinaryScalar>(); |
| 192 | if (scalar.is_valid) { |
| 193 | const auto bytes = std::string_view{*scalar.value}; |
| 194 | for (int64_t i = 0; i < batch_length; i++) { |
| 195 | handle_next_valid_value(bytes); |
| 196 | } |
| 197 | } else { |
| 198 | for (int64_t i = 0; i < batch_length; i++) { |
| 199 | handle_next_null_value(); |
| 200 | } |
| 201 | } |
| 202 | } |
| 203 | return Status::OK(); |
| 204 | } |
| 205 | |
| 206 | void EncodeNull(uint8_t** encoded_bytes) override { |
| 207 | auto& encoded_ptr = *encoded_bytes; |