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com.hfg xml, html, svg, and bioinformatics utility library

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package com.hfg.util.io;

import java.util.Comparator;

import com.hfg.datetime.DateSortDirection;

//------------------------------------------------------------------------------
/**
 * Comparator for comparing FileObj objects based on their timestamps.
 *
 * @author J. Alex Taylor, hairyfatguy.com
 */
//------------------------------------------------------------------------------
// com.hfg XML/HTML Coding Library
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
//
// J. Alex Taylor, President, Founder, CEO, COO, CFO, OOPS hairyfatguy.com
// [email protected]
//------------------------------------------------------------------------------


public class FileObjTimestampComparator implements Comparator
{

   private DateSortDirection mDirection;

   //###########################################################################
   // CONSTRUCTORS
   //###########################################################################

   //---------------------------------------------------------------------------
   public FileObjTimestampComparator(DateSortDirection inDirection)
   {
      mDirection = inDirection;
   }



   //###########################################################################
   // PUBLIC METHODS
   //###########################################################################

   //---------------------------------------------------------------------------
   public int compare(FileObj inObj1, FileObj inObj2)
   {
      int returnValue = 0;

      if (inObj1.getTimestamp() != null)
      {
         if (inObj2.getTimestamp() != null)
         {
            if (inObj1.getTimestamp().getTimeInMillis() > inObj2.getTimestamp().getTimeInMillis())
            {
               returnValue = -1;
            }
            else if (inObj1.getTimestamp().getTimeInMillis() < inObj2.getTimestamp().getTimeInMillis())
            {
               returnValue = 1;
            }
         }
      }

      if (mDirection == DateSortDirection.OLDER_TO_NEWER) returnValue = -returnValue;

      return returnValue;
   }

}