def get_object_url(self, bucket, key, expire = None):
qag = QueryURLGenerator(self.access_key_id, self.secret_access_key, self.is_secure, self.server, self.calling_format)
if expire:
qag.set_expiresin(expire)
return qag.get(bucket, key, None)
else:
return qag.make_bare_url(bucket, key)
