OneByOneSupportCounter.hpp

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#ifndef OneByOneSupportCounter_HPP
#define OneByOneSupportCounter_HPP

#include "common.hpp"
#include <vector>
//#include <cstdio>
//#include <iterator>   //for test



template <class DATA_STRUCTURE, class TR, class SC = Dummy>
class OneByOneSupportCounter
{
   private:

      DATA_STRUCTURE& data_structure;
      TR& transaction_reader;
      SC support_counter;

   public:
      OneByOneSupportCounter( DATA_STRUCTURE& data_structure,
                              TR& transaction_reader) :
         data_structure(data_structure), 
         transaction_reader(transaction_reader){}
      void countSupport(const unsigned int candidate_size);
};

template <class DATA_STRUCTURE, class TR, class SC> inline void 
OneByOneSupportCounter<DATA_STRUCTURE, TR, SC>::
countSupport(const unsigned int candidate_size )
{
   assert( candidate_size > 2 );
   transaction_reader.rewind();
   std::vector<item_t> transaction;
   counter_t multiplicity;
   while( (multiplicity = transaction_reader.nextTransactionBIS(
              transaction)) !=0 )
      if( candidate_size <= transaction.size() )
         support_counter.updateCounters(
            data_structure, transaction, 
            candidate_size, multiplicity);

}
#endif

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