components/variations/processed_study.h

   1 // Copyright 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef COMPONENTS_VARIATIONS_PROCESSED_STUDY_H_
   6 #define COMPONENTS_VARIATIONS_PROCESSED_STUDY_H_
   7
   8 #include <vector>
   9
  10 #include "base/metrics/field_trial.h"
  11
  12 namespace chrome_variations {
  13
  14 class Study;
  15
  16 // Wrapper over Study with extra information computed during pre-processing,
  17 // such as whether the study is expired and its total probability.
  18 class ProcessedStudy {
  19  public:
  20   ProcessedStudy();
  21   ~ProcessedStudy();
  22
  23   bool Init(const Study* study, bool is_expired);
  24
  25   const Study* study() const { return study_; }
  26
  27   base::FieldTrial::Probability total_probability() const {
  28     return total_probability_;
  29   }
  30
  31   bool is_expired() const { return is_expired_; }
  32
  33   static bool ValidateAndAppendStudy(
  34       const Study* study,
  35       bool is_expired,
  36       std::vector<ProcessedStudy>* processed_studies);
  37
  38  private:
  39   // Corresponding Study object. Weak reference.
  40   const Study* study_;
  41
  42   // Computed total group probability for the study.
  43   base::FieldTrial::Probability total_probability_;
  44
  45   // Whether the study is expired.
  46   bool is_expired_;
  47 };
  48
  49 }  // namespace chrome_variations
  50
  51 #endif  // COMPONENTS_VARIATIONS_PROCESSED_STUDY_H_