#ifndef __JSUPPORT__JTREESAMPLER__
#define __JSUPPORT__JTREESAMPLER__

#include "JLang/JSampler.hh"
#include "JLang/JTemplate.hh"
#include "JLang/JObjectSampler.hh"
#include "JSupport/JTreeScanner.hh"


/**
 * \author mdejong
 */

namespace JSUPPORT {}
namespace JPP { using namespace JSUPPORT; }

namespace JSUPPORT {

  using JLANG::JSampler;
  using JLANG::JTemplate;
  using JLANG::JObjectSampler;


  /**
   * Auxiliary class to sample from a list of files.
   */
  template<class T, template<class> class JSampler_t = JSampler>
  struct JTreeSampler :
    public JTemplate< JTreeScanner<T> >,
    public JObjectSampler<T, JSampler_t>
  {

    typedef JSampler_t<T>   sampler_type;

    
    /**
     * Constructor.
     *
     * \param  sampler      sampler
     */
    JTreeSampler(const sampler_type& sampler = sampler_type()) :
      JTemplate< JTreeScanner<T> >(),
      JObjectSampler<T, JSampler_t>(this->template get<JRewindableObjectIterator<T>,true>(), sampler)
    {}
  };
}

#endif