DBSplitter.cc

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// -*- C++ -*-

// DBSplitter.cc
//
// Copyright (C) 2004 Marius Muja 
// 
// 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
// NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
// TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
// LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// 
// 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: DBSplitter.cc,v 1.2 2004/07/21 16:30:55 chrish42 Exp $ 
   ******************************************************* */

// Authors: Marius Muja

#include "DBSplitter.h"
#include <plearn/db/getDataSet.h>

namespace PLearn {
using namespace std;

DBSplitter::DBSplitter() 
  :Splitter(),
  databases(0)
{
}

PLEARN_IMPLEMENT_OBJECT(DBSplitter, 
    "A Splitter that contains several databases.", 
    "The databases to be used can be specified with the 'databases' option. ");

void DBSplitter::declareOptions(OptionList& ol)
{

  declareOption(ol, "databases", &DBSplitter::databases, OptionBase::buildoption,
                 "Vector with the specifications of the databases to be used.");

  // Now call the parent class' declareOptions
  inherited::declareOptions(ol);
}

void DBSplitter::build_()
{
}

// ### Nothing to add here, simply calls build_
void DBSplitter::build()
{
  inherited::build();
  build_();
}

void DBSplitter::makeDeepCopyFromShallowCopy(map<const void*, void*>& copies)
{
  Splitter::makeDeepCopyFromShallowCopy(copies);

  // ### Call deepCopyField on all "pointer-like" fields 
  // ### that you wish to be deepCopied rather than 
  // ### shallow-copied.
  // ### ex:
  // deepCopyField(trainvec, copies);

  // ### Remove this line when you have fully implemented this method.
  PLERROR("DBSplitter::makeDeepCopyFromShallowCopy not fully (correctly) implemented yet!");
}

int DBSplitter::nsplits() const
{
  return databases.size();
}

int DBSplitter::nSetsPerSplit() const
{
  return 1;
}

TVec<VMat> DBSplitter::getSplit(int k)
{
  TVec<VMat> result;
  result.append(PLearn::getDataSet(databases[k]));

  return result;
}


} // end of namespace PLearn

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