How to change a Ceiling fixture without a wall switch?

Hello, I am trying to change a chandelier. The old one has a light on/off switch on the fixture itself. There are no wall switches that operate it. My new chandelier doesn't have a light switch. What should I do? I only have one white and one black cable available in the ceiling. I would hate adding any ugly pulls to my beautiful chandelier - are there any other options? Thanks in advance.