SeqNumberProvider.h

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//
// Created by Nico Schäfer on 12/7/17.
//
 
#ifndef JODA_SEQNUMBERPROVIDER_H
#define JODA_SEQNUMBERPROVIDER_H
 
#include <atomic>
 
#include "IValueProvider.h"
namespace joda::query {
class SeqNumberProvider : public joda::query::IValueProvider {
 public:
  explicit SeqNumberProvider(
      std::vector<std::unique_ptr<IValueProvider>> &&parameters);
  explicit SeqNumberProvider(std::shared_ptr<std::atomic_ulong> currNum);
  std::unique_ptr<IValueProvider> duplicate() const override;
  bool isConst() const override;
 
  RJValue getAtomValue(const RapidJsonDocument &json,
                       RJMemoryPoolAlloc &alloc) const override;
  const RJValue *getValue(const RapidJsonDocument &json,
                          RJMemoryPoolAlloc &alloc) const override;
  std::string getName() const override;
  IValueType getReturnType() const override;
 
  CREATE_FACTORY(SeqNumberProvider)
 
 protected:
  std::shared_ptr<std::atomic_ulong> currNum;
 
 private:
  SeqNumberProvider();
};
}  // namespace joda::query
 
#endif  // JODA_SEQNUMBERPROVIDER_H