JMultipleFileSampler.hh

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#ifndef __JSUPPORT__JMULTIPLEFILESAMPLER__
#define __JSUPPORT__JMULTIPLEFILESAMPLER__
 
#include "JLang/JSampler.hh"
#include "JLang/JObjectSampler.hh"
#include "JSupport/JMultipleFileScanner.hh"
 
 
/**
 * \author mdejong
 */
 
namespace JSUPPORT {}
namespace JPP { using namespace JSUPPORT; }
 
namespace JSUPPORT {
 
  using JLANG::JSampler;
  using JLANG::JObjectSampler;
 
  /**
   * Auxiliary base class to sample from a list of files.
   */
  template<class T>
  struct JMultipleFileSampler_t {
    /**
     * Smart pointer operator.
     *
     * \return          pointer to scanner
     */
    const JMultipleFileScanner<T>* const operator->() const
    {
      return &scanner;
    }
 
    /**
     * Smart pointer operator.
     *
     * \return          pointer to scanner
     */
    JMultipleFileScanner<T>* operator->()
    {
      return &scanner;
    }
 
  protected:
    JMultipleFileScanner<T> scanner;
  };
 
 
  /**
   * Auxiliary class to sample from a list of files.
   */
  template<class T, template<class> class JSampler_t = JSampler>
  struct JMultipleFileSampler :
    public JMultipleFileSampler_t<T>,
    public JObjectSampler<T, JSampler_t>
  {
 
    typedef JSampler_t<T>   sampler_type;
 
    
    /**
     * Constructor.
     *
     * \param  sampler      sampler
     */
    JMultipleFileSampler(const sampler_type& sampler = sampler_type()) :
      JMultipleFileSampler_t<T>(),
      JObjectSampler<T, JSampler_t>(this->scanner, sampler)
    {}
  };
}
 
#endif