view accumulator.h @ 659:536cfa209e7f

Sampling enhancements

Allow specification of a key with -k for doing sampling between a single
datum and the rest of the database.  (The implementation is slightly
icky, as mentioned in the previous commit message; hopefully this
situation will not remain for too long).

While we're at it, allow -r/--resultlength as a synonym for --nsamples
(if --nsamples is not given) in order better to reflect the analogy
between querying and sampling.

#ifndef ACCUMULATOR_H
#define ACCUMULATOR_H

class Accumulator {
public:
  virtual ~Accumulator() {};
  virtual void add_point(adb_result_t *r) = 0;
  virtual adb_query_results_t *get_points() = 0;
};

#endif