Filter.h

/**************************************************************************
 * Copyright (c) 2007 Clifford Conley Owens III                           *
 *                                                                        *
 * This file is part of Biorithm.                                         *
 *                                                                        *
 * Biorithm is free software: you can redistribute it and/or modify       *
 * it under the terms of the GNU General Public License as published by   *
 * the Free Software Foundation, either version 3 of the License, or      *
 * (at your option) any later version.                                    *
 *                                                                        *
 * Biorithm is distributed in the hope that it will be useful,            *
 * but WITHOUT ANY WARRANTY; without even the implied warranty of         *
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the          *
 * GNU General Public License for more details.                           *
 *                                                                        *
 * You should have received a copy of the GNU General Public License      *
 * along with Biorithm.  If not, see <http://www.gnu.org/licenses/>.      *
 *                                                                        *
 **************************************************************************/

#ifndef FILTER_H
#define FILTER_H

#include <set>
using namespace std;

// ---------------------------- Internal Headers ---------------------------- //

#include "ItemSet.h"
#include "Monitorable.h"
#include "TruthMatrix.h"
#include <iostream>

class Filter
{
    public:
        virtual ~Filter(){};
        virtual bool filter(const ItemSet& is, TruthMatrix& tm, string& msg) =
            0;
        virtual void printis(const ItemSet& is, const TruthMatrix& tm,
            ostream& out) const
        {
            for (unsigned int i = 0; i < is.size(); i++)
            {
                if (i)
                {
                    out << ", ";
                }
                out << is[i] << ':' << tm.getColname(is[i]);
            }
        };
};


// conley, i needed two functions to get the names of columns in an
// itemset and to make them into a string. please put them somewhere else, if you like.
inline void _makeColumnSet(const ItemSet &is, TruthMatrix& tm, set< string > &columns)
{
  for (unsigned int i = 0; i < is.size(); i++)
    {
      columns.insert(tm.getColname(is[i]));
    }
}

inline void _makeName(const set< string > &columns, string &name, string sep = "\n")
{
  // form name by concatenating all elements of columns.
  set< string >::const_iterator citr;
  citr = columns.begin();
  name = *citr;
  citr++;
  for (; citr != columns.end(); citr++)
    {
      name += sep + *citr;
    }
}


#endif