/*
  Copyright (C) 2006 Steven L. Scott

  This library is free software; you can redistribute it and/or
  modify it under the terms of the GNU Lesser General Public
  License as published by the Free Software Foundation; either
  version 2.1 of the License, or (at your option) any later version.

  This library 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
  Lesser General Public License for more details.

  You should have received a copy of the GNU Lesser General Public
  License along with this library; if not, write to the Free Software
  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA
*/
#ifndef BOOM_COMPOSITE_DATA_HPP
#define BOOM_COMPOSITE_DATA_HPP


#include <Models/DataTypes.hpp>
namespace BOOM{

// CompositeData is a multivariate observation (on a single subject)
// of potentially disparate data types.  This is the data type for a
// CompositeModel.
  class CompositeData : virtual public Data{
  public:

    // Use this constructor to create a new CompositeData and add() in
    // elements one at a time.  This approach is more flexible than
    // the vector constructor because add() can take advantage of
    // polymorphic arguments.
    CompositeData();

    // Use this constructor to create a new Composite Data when you've
    // already got the component data stored away in a vector.
    CompositeData(const std::vector<Ptr<Data> > &d);

    virtual CompositeData * clone()const;
    virtual ostream & display(ostream &)const;

    // Number of composite data elements.  This can be smaller than
    // size() when some elements are vectors, matrices, regression
    // data, etc.
    uint dim()const;

    Ptr<Data> get_ptr(uint n);
    const Data * get(uint n)const;
    void add(Ptr<Data> dp);

  private:
    std::vector<Ptr<Data> > dat_;
  };

}

#endif // BOOM_COMPOSITE_DATA_HPP
