JSummaryFileRouter.hh

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#ifndef __JSUPPORT__JSUMMARYFILEROUTER__
#define __JSUPPORT__JSUMMARYFILEROUTER__
 
#include <string>
 
#include "km3net-dataformat/online/JDAQSummaryslice.hh"
#include "km3net-dataformat/online/JDAQHeader.hh"
 
#include "JDAQ/JDAQEvaluator.hh"
#include "JDAQ/JSupport.hh"
 
#include "JSupport/JSummaryRouter.hh"
#include "JSupport/JTreeScanner.hh"
 
 
/**
 * \author mdejong
 */
 
namespace JSUPPORT {}
namespace JPP { using namespace JSUPPORT; }
 
namespace JSUPPORT {
 
  using KM3NETDAQ::JDAQSummaryslice;
  using KM3NETDAQ::JDAQEvaluator;
  using KM3NETDAQ::JDAQHeader;
  
 
  /**
   * File router for fast addressing of summary data.
   *
   * The member method update() should be used to update the internal router for a given event.
   * The member method getRate(const JDAQPMTIdentifier&) const can subsequently be used to obtain
   * the measured singles rate for a given PMT at the closest time of the event.
   */
  class JSummaryFileRouter :
    public JSummaryRouter,
    public JTreeScanner<JDAQSummaryslice, JDAQEvaluator>
  {
  public:
    /**
     * Constructor.
     *
     * \param  file_name       file name
     */
    JSummaryFileRouter(const std::string& file_name) :
      JSummaryRouter(),
      JTreeScanner<JDAQSummaryslice, JDAQEvaluator>(file_name)
    {}
 
 
    /**
     * Constructor.
     *
     * \param  file_name       file name
     * \param  rate_Hz         default singles rate [Hz]
     */
    JSummaryFileRouter(const std::string& file_name,
                       const double       rate_Hz) :
      JSummaryRouter(rate_Hz),
      JTreeScanner<JDAQSummaryslice, JDAQEvaluator>(file_name)
    {}
 
 
    /**
     * Update router.
     *
     * \param  header          header
     */
    void update(const JDAQHeader& header)
    {
      static Long64_t previous = -1;
 
      const  Long64_t index    = this->find(header);
 
      if (index != -1) {
 
        if (index != previous) {
 
          previous = index;
 
          JSummaryRouter::update(this->getEntry(index));
        }
      }
    }
  };
}
 
#endif