Function read_array_metadata

examples/cpp_api/array_metadata.cc:79–132

}

void read_array_metadata() {
  // Create TileDB context
  Context ctx;

  // Open array for reading
  Array array(ctx, array_name, TILEDB_READ);

  // Read with key
  tiledb_datatype_t v_type;
  uint32_t v_num;
  const void* v;
  array.get_metadata("aaa", &v_type, &v_num, &v);
  std::cout << "Details of item with key: aaa\n";
  std::cout << "- Value type: "
            << ((v_type == TILEDB_INT32) ? "INT32" : "something went wrong")
            << "\n";
  std::cout << "- Value num: " << v_num << "\n";
  std::cout << "- Value: " << *(const int*)v << "\n";

  array.get_metadata("bb", &v_type, &v_num, &v);
  std::cout << "Details of item with key: bb\n";
  std::cout << "- Value type: "
            << ((v_type == TILEDB_FLOAT32) ? "FLOAT32" : "something went wrong")
            << "\n";
  std::cout << "- Value num: " << v_num << "\n";
  std::cout << "- Value: " << ((const float*)v)[0] << " "
            << ((const float*)v)[1] << "\n";

  // Enumerate all metadata items
  std::string key;
  uint64_t num = array.metadata_num();
  printf("Enumerate all metadata items:\n");
  for (uint64_t i = 0; i < num; ++i) {
    array.get_metadata_from_index(i, &key, &v_type, &v_num, &v);

    std::cout << "# Item " << i << "\n";
    const char* v_type_str = (v_type == TILEDB_INT32) ? "INT32" : "FLOAT32";
    std::cout << "- Key: " << key << "\n";
    std::cout << "- Value type: " << v_type_str << "\n";
    std::cout << "- Value num: " << v_num << "\n";
    std::cout << "- Value: ";
    if (v_type == TILEDB_INT32) {
      for (uint32_t j = 0; j < v_num; ++j)
        std::cout << ((const int*)v)[j] << " ";
    } else if (v_type == TILEDB_FLOAT32) {
      for (uint32_t j = 0; j < v_num; ++j)
        std::cout << ((const float*)v)[j] << " ";
    }
    std::cout << "\n";
  }

  // Close array
  array.close();
}

int main() {
  create_array();