One thing the media won't tell you about this story is that these files are already existing in paper format.
It's been used by the RG (Renseignements Généraux) for years (at least since De Gaulle). The RG is a "political" police that spy on 'suspect' citizens, political opponent, syndicates, associative groups and so on....
Edvige is only the digital version of it. But there had to put a law because of the CNIL (Commission Nationale Informatique et Liberté) that stated all the gathering have to be made public and approved by the parliament (and the constitutional council).