savePerson: function( person_id, callback )
{
  this.db.get( 'SELECT * FROM `person` WHERE person_id = ' + person_id + ' LIMIT 1;', function( err, res )
  {
     if( err || !res.length )
     {
        callback( false, true );
     }

     var person = res.person[0];
     this.db.get( 'SELECT * FROM `person_' + person.person_type + ' WHERE person_id = ' + person_id + ' LIMIT 1;', function( err, res )
     {
       person.data = res;

       this.saveFile( 'person_' + person_id, function( err, res )
       {
         if( err )
         {
           callback( err, false );
         }

         callback( false, { time: new Date(), person: person } );
       }
    }
  }
}