Method get_metadata

tiledb/sm/cpp_api/array.h:1111–1120

* It gets a metadata key-value item from an open array. The array must * be opened in READ mode, otherwise the function will error out. * * @param key The key of the metadata item to be retrieved. UTF-8 encodings * are acceptable. * @param value_type The datatype of the value. * @param value_num The value may consist of more than one items of the * same datatype. This

   * @note If the key does not exist, then `value` will be NULL.
   */
  void get_metadata(
      const std::string& key,
      tiledb_datatype_t* value_type,
      uint32_t* value_num,
      const void** value) {
    auto& ctx = ctx_.get();
    tiledb_ctx_t* c_ctx = ctx.ptr().get();
    ctx.handle_error(tiledb_array_get_metadata(
        c_ctx, array_.get(), key.c_str(), value_type, value_num, value));
  }

  /**
   * Checks if key exists in metadata from an open array. The array must