src/core/qgsfeatureiterator.cpp

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/***************************************************************************
    qgsfeatureiterator.cpp
    ---------------------
    begin                : Juli 2012
    copyright            : (C) 2012 by Martin Dobias
    email                : wonder dot sk at gmail dot com
 ***************************************************************************
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 ***************************************************************************/
#include "qgsfeatureiterator.h"


QgsAbstractFeatureIterator::QgsAbstractFeatureIterator( const QgsFeatureRequest& request )
    : mRequest( request ),
    mClosed( false ),
    refs( 0 )
{
}

QgsAbstractFeatureIterator::~QgsAbstractFeatureIterator()
{
}

void QgsAbstractFeatureIterator::ref()
{
  refs++;
}
void QgsAbstractFeatureIterator::deref()
{
  refs--;
  if ( !refs )
    delete this;
}


QgsFeatureIterator& QgsFeatureIterator::operator=( const QgsFeatureIterator & other )
{
  if ( this != &other )
  {
    if ( mIter )
      mIter->deref();
    mIter = other.mIter;
    if ( mIter )
      mIter->ref();
  }
  return *this;
}