SourceVMatrix.h

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// -*- C++ -*-

// SourceVMatrix.h
//
// Copyright (C) 2003 Pascal Vincent 
// 
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
// 
//  1. Redistributions of source code must retain the above copyright
//     notice, this list of conditions and the following disclaimer.
// 
//  2. Redistributions in binary form must reproduce the above copyright
//     notice, this list of conditions and the following disclaimer in the
//     documentation and/or other materials provided with the distribution.
// 
//  3. The name of the authors may not be used to endorse or promote
//     products derived from this software without specific prior written
//     permission.
// 
// THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
// IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
// OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
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// 
// This file is part of the PLearn library. For more information on the PLearn
// library, go to the PLearn Web site at www.plearn.org

/* *******************************************************      
   * $Id: SourceVMatrix.h,v 1.9 2004/07/07 17:30:48 tihocan Exp $ 
   ******************************************************* */

// Authors: Pascal Vincent

/*
SourceVmatrix is a base class for vmatrices that are defined as a function of 
another vmatrix (the "source").

It has a source buildoption to specify said source.

*/


#ifndef SourceVMatrix_INC
#define SourceVMatrix_INC

#include "RowBufferedVMatrix.h"
#include "VMat.h"

namespace PLearn {
using namespace std;

class SourceVMatrix: public RowBufferedVMatrix
{

private:

  typedef RowBufferedVMatrix inherited;

protected:

  // *********************
  // * protected options *
  // *********************

  // Fields below are not options.

  Vec sourcerow;

public:

  // ************************
  // * public build options *
  // ************************

  VMat source;

  //  TVec<string> dependencies; // a list of paths to files that this VMat depends on

  // ****************
  // * Constructors *
  // ****************

  // Default constructor, make sure the implementation in the .cc
  // initializes all fields to reasonable default values.
  SourceVMatrix();  
  
  SourceVMatrix(VMat the_source)
    :source(the_source) {}

  // ******************
  // * Object methods *
  // ******************

private: 
  // (Please implement in .cc)
  void build_();

protected: 
  // (Please implement in .cc)
  static void declareOptions(OptionList& ol);


  void setMetaInfoFromSource();

  virtual void getNewRow(int i, const Vec& v) const;

public:


  virtual void setMetaDataDir(const string& the_metadatadir);

  // simply calls inherited::build() then build_() 
  virtual void build();

  virtual void makeDeepCopyFromShallowCopy(map<const void*, void*>& copies);

  PLEARN_DECLARE_OBJECT(SourceVMatrix);

};

DECLARE_OBJECT_PTR(SourceVMatrix);

} // end of namespace PLearn
#endif

---