JEvtWeight.hh

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#ifndef __JAANET__JEVTWEIGHT__
#define __JAANET__JEVTWEIGHT__

#include "JLang/JClonable.hh"

#include "JAAnet/JEvtWeightInterface.hh"


/**
 * \author mdejong
 */

namespace JAANET {

  using JLANG::JClonable;

  
  /**
   * Abstract base class for event weighing.
   */
  struct JEvtWeight :
    public JEvtWeightInterface,
    public JClonable<JEvtWeight>
  {
    /**
     * Default constructor.
     */
    JEvtWeight() : norm(0.0)
    {}


    /**
     * Virtual destructor.
     */
    virtual ~JEvtWeight()
    {}


    /**
     * Get event-weight normalisation.
     * Note: the return-value should be *multiplied* in order to normalise the event-weight
     *
     * \return                   event-weight normalisation
     */
    virtual double getNormalisation() const override
    {
      return norm;
    }
    

  protected:

    double norm; //!< Event-weight normalisation
  };
}

#endif