eoMergeReduce.h

//-----------------------------------------------------------------------------

#ifndef _eoMergeReduce_h
#define _eoMergeReduce_h


//-----------------------------------------------------------------------------
#include <eoPop.h>
#include <eoFunctor.h>
#include <eoMerge.h>
#include <eoReduce.h>
#include <eoReplacement.h>
#include <utils/eoHowMany.h>
//-----------------------------------------------------------------------------
template <class EOT>
class eoMergeReduce : public eoReplacement<EOT>
{
    public:
        eoMergeReduce(eoMerge<EOT>& _merge, eoReduce<EOT>& _reduce) :
        merge(_merge), reduce(_reduce)
        {}

        virtual void operator()(eoPop<EOT>& _parents, eoPop<EOT>& _offspring)
        {
            merge(_parents, _offspring); // parents untouched, result in offspring
            reduce(_offspring, _parents.size());
            _parents.swap(_offspring);
        }

    private :
        eoMerge<EOT>& merge;
        eoReduce<EOT>& reduce;
};

template <class EOT>
class eoPlusReplacement : public eoMergeReduce<EOT>
{
    public :
        eoPlusReplacement() : eoMergeReduce<EOT>(plus, truncate) {}

    private :
        eoPlus<EOT> plus;
        eoTruncate<EOT> truncate;
};

template <class EOT>
class eoCommaReplacement : public eoMergeReduce<EOT>
{
    public :
        eoCommaReplacement() : eoMergeReduce<EOT>(no_elite, truncate) {}

        virtual void operator()(eoPop<EOT>& _parents, eoPop<EOT>& _offspring)
        {
            // There must be more offsprings than parents, or else an exception will be raised
            assert( _offspring.size() >= _parents.size() );

            eoMergeReduce<EOT>::operator()( _parents, _offspring );
        }

    private :
        eoNoElitism<EOT> no_elite;
        eoTruncate<EOT> truncate;
};

template <class EOT>
class eoEPReplacement : public eoMergeReduce<EOT>
{
public :
  eoEPReplacement(int _tSize) : eoMergeReduce<EOT>(plus, truncate), truncate(_tSize)
    //  {truncate.setSize(_tSize);}
  {}
private :
  eoPlus<EOT> plus;
  eoEPReduce<EOT> truncate;
};



#endif