PrefixArrayListDBCache.hpp

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#ifndef PrefixArrayListDBCache_HPP
#define PrefixArrayListDBCache_HPP

#include "common.hpp"
#include "datastructures/PrefixArrayList.hpp"
#include <vector>
//#include <fstream>

template <class T_R, unsigned THRESHOLD = 100>
class PrefixArrayListDBCache : public T_R, public PrefixArrayList<THRESHOLD>
{
   public:
      typedef typename T_R::params_t params_t;
      PrefixArrayListDBCache( const params_t* par ) :
         T_R(par), PrefixArrayList<THRESHOLD>(par->largest_item)
      {
         std::vector<item_t> transaction;
         register counter_t multiplicity;
         T_R::rewind();
         while( (multiplicity = T_R::nextTransactionBIS(
                    transaction)) != 0 )
            if(transaction.size() > 1) 
               PrefixArrayList<THRESHOLD>::insert( 
                  transaction,  multiplicity);
      }
      template <class BIS> counter_t nextTransactionBIS( 
         BIS& transaction ){return 0;}

      void rewind()
      {
      }
      
};

#endif

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