JWeightMupage.hh

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#ifndef __JAANET__JWEIGHTMUPAGE__
#define __JAANET__JWEIGHTMUPAGE__

#include "km3net-dataformat/offline/Head.hh"
#include "km3net-dataformat/offline/Evt.hh"

#include "JLang/JException.hh"
#include "JLang/JClonable.hh"

#include "JAAnet/JHead.hh"
#include "JAAnet/JHeadToolkit.hh"
#include "JAAnet/JWeightEvent.hh"

/**
 * \author mdejong
 */

namespace JAANET {

  using JLANG::JClonable;
  using JLANG::JValueOutOfRange;
  
  
  /**
   * Implementation of event weighing for MUPAGE data.
   */
  struct JWeightMupage :
    public JClonable<JWeightEvent, JWeightMupage>
  {
    /**
     * Default Constructor.
     */
    JWeightMupage() : W(0.0)
    {}
    
    /**
     * Constructor.
     *
     * \param  header            header
     */
    JWeightMupage(const JHead& header)
    {
      configure(header);
    }
    
    
    /**
     * Configuration.
     *
     * \param  header            header
     */
    void configure(const JHead& header) override
    {
      if (check(header) && header.livetime.numberOfSeconds > 0.0) {

        W = 1.0 / header.livetime.numberOfSeconds;

      } else {
        
        THROW(JValueOutOfRange, "JWeightMupage::configure(): Provided header is inconsistent with MUPAGE.");
      }
    }

    
    /**
     * Check whether header is consistent with this event weighter.
     *
     * \param  header            header
     * \return                   true if consistent; else false
     */
    bool check(const JHead& header) const override
    {
      return is_mupage(header);
    }
    
    
    /**
     * Get weight of given event.
     *
     * \param  evt               event
     * \return                   weight [1/s]
     */
    double getWeight(const Evt& evt) const override
    {
      return W;
    }

  private:
    double W;
  };
}

#endif