RunInfoProxy.h

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#ifndef CondCore_CondDB_RunInfoProxy_h
#define CondCore_CondDB_RunInfoProxy_h
//
// Package:     CondDB
// Class  :     RunInfoProxy
//
//
// Author:      Giacomo Govi
// Created:     Dec 2016
//
 
#include "CondCore/CondDB/interface/Types.h"
//
 
namespace cond {
 
  namespace persistency {
 
    class SessionImpl;
    class RunInfoProxyData;
 
    // value semantics. to be used WITHIN the parent session transaction ( therefore the session should be kept alive ).
    class RunInfoProxy {
    public:
      typedef std::vector<std::tuple<Time_t, boost::posix_time::ptime, boost::posix_time::ptime> > RunInfoData;
 
    public:
      // more or less compliant with typical iterator semantics...
      class Iterator : public std::iterator<std::input_iterator_tag, cond::RunInfo_t> {
      public:
        //
        Iterator();
        explicit Iterator(RunInfoData::const_iterator current);
        Iterator(const Iterator& rhs);
 
        //
        Iterator& operator=(const Iterator& rhs);
 
        // returns a VALUE not a reference!
        cond::RunInfo_t operator*();
 
        //
        Iterator& operator++();
        Iterator operator++(int);
 
        //
        bool operator==(const Iterator& rhs) const;
        bool operator!=(const Iterator& rhs) const;
 
      private:
        RunInfoData::const_iterator m_current;
      };
 
    public:
      RunInfoProxy();
 
      //
      explicit RunInfoProxy(const std::shared_ptr<SessionImpl>& session);
 
      //
      RunInfoProxy(const RunInfoProxy& rhs);
 
      //
      RunInfoProxy& operator=(const RunInfoProxy& rhs);
 
      // loads in memory the RunInfo data for the specified run range
      void load(Time_t low, Time_t up);
 
      // loads in memory the RunInfo data for the specified run range
      void load(const boost::posix_time::ptime& low, const boost::posix_time::ptime& up);
 
      // clear all the iov data in memory
      void reset();
 
      // start the iteration.
      Iterator begin() const;
 
      //
      Iterator end() const;
 
      //
      Iterator find(Time_t target) const;
 
      //
      Iterator find(const boost::posix_time::ptime& target) const;
 
      //
      cond::RunInfo_t get(Time_t target) const;
 
      //
      cond::RunInfo_t get(const boost::posix_time::ptime& target) const;
 
      //
      int size() const;
 
    private:
      void checkTransaction(const std::string& ctx);
 
    private:
      std::shared_ptr<RunInfoProxyData> m_data;
      std::shared_ptr<SessionImpl> m_session;
    };
 
  }  // namespace persistency
}  // namespace cond
 
#endif