00001 /* -*- mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; -*- 00002 * vim:expandtab:shiftwidth=2:tabstop=2:smarttab: 00003 * 00004 * Copyright (C) 2008 Sun Microsystems, Inc. 00005 * 00006 * This program is free software; you can redistribute it and/or modify 00007 * it under the terms of the GNU General Public License as published by 00008 * the Free Software Foundation; version 2 of the License. 00009 * 00010 * This program is distributed in the hope that it will be useful, 00011 * but WITHOUT ANY WARRANTY; without even the implied warranty of 00012 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00013 * GNU General Public License for more details. 00014 * 00015 * You should have received a copy of the GNU General Public License 00016 * along with this program; if not, write to the Free Software 00017 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 00018 */ 00019 00020 #include <config.h> 00021 00022 #include <drizzled/function/time/period_add.h> 00023 #include <drizzled/calendar.h> 00024 00025 namespace drizzled 00026 { 00027 00028 int64_t Item_func_period_add::val_int() 00029 { 00030 assert(fixed == 1); 00031 uint32_t period= (uint32_t) args[0]->val_int(); 00032 uint32_t months= (uint32_t) args[1]->val_int(); 00033 00034 if ((null_value= args[0]->null_value || args[1]->null_value) || 00035 period == 0L) 00036 return 0; 00037 00038 return (int64_t) months_to_year_month(year_month_to_months(period) + months); 00039 } 00040 00041 } /* namespace drizzled */