Method _borrowWithKeyspace

lib/prepare-handler.js:266–274

* Borrows a connection and changes the active keyspace on the connection, if needed. * It does not perform any retry or error handling. * @param {Host!} host * @param {string} keyspace * @returns {Promise } * @throws {errors.BusyConnectionError} When the connection is busy.

(host, keyspace)

   * @private
   */
  static async _borrowWithKeyspace(host, keyspace) {
    const connection = host.borrowConnection();

    if (keyspace && connection.keyspace !== keyspace) {
      await connection.changeKeyspace(keyspace);
    }

    return connection;
  }

  /**
   * Prepares the provided query on all hosts, except the host provided.