diff --git a/src/constraint_solver/constraint_solver.h b/src/constraint_solver/constraint_solver.h
index 479a41c2dd..e0b16eadc7 100644
--- a/src/constraint_solver/constraint_solver.h
+++ b/src/constraint_solver/constraint_solver.h
@@ -5012,6 +5012,11 @@ class DisjunctiveConstraint : public Constraint {
     }
   }
 
+  virtual const std::vector<IntVar*>& nexts() const = 0;
+  virtual const std::vector<IntVar*>& actives() const = 0;
+  virtual const std::vector<IntVar*>& time_cumuls() const = 0;
+  virtual const std::vector<IntVar*>& time_slacks() const = 0;
+
  protected:
   const std::vector<IntervalVar*> intervals_;
   std::unique_ptr<Solver::IndexEvaluator2> transition_time_;
diff --git a/src/constraint_solver/resource.cc b/src/constraint_solver/resource.cc
index a4b498352d..f2f4257929 100644
--- a/src/constraint_solver/resource.cc
+++ b/src/constraint_solver/resource.cc
@@ -911,6 +911,18 @@ class FullDisjunctiveConstraint : public DisjunctiveConstraint {
                         JoinDebugStringPtr(intervals_, ",").c_str());
   }
 
+  virtual const std::vector<IntVar*>& nexts() const { return nexts_; }
+
+  virtual const std::vector<IntVar*>& actives() const { return actives_; }
+
+  virtual const std::vector<IntVar*>& time_cumuls() const {
+    return time_cumuls_;
+  }
+
+  virtual const std::vector<IntVar*>& time_slacks() const {
+    return time_slacks_;
+  }
+
  private:
   int64 Distance(int64 activity_plus_one, int64 next_activity_plus_one) {
     return (transition_time_.get() == nullptr || activity_plus_one == 0 ||