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 #pragma once 00021 00022 #include <drizzled/function/time/date.h> 00023 00024 #include <drizzled/temporal.h> 00025 00026 namespace drizzled 00027 { 00028 00029 /* Abstract CURRENT_TIMESTAMP function. See also Item_func_curtime */ 00030 00031 class Item_func_now :public Item_date_func 00032 { 00033 protected: 00034 int64_t value; 00035 char buff[type::Time::MAX_STRING_LENGTH]; 00036 uint32_t buff_length; 00037 type::Time ltime; 00038 DateTime cached_temporal; 00039 00040 public: 00041 Item_func_now() :Item_date_func() {} 00042 Item_func_now(Item *a) :Item_date_func(a) {} 00043 enum Item_result result_type () const { return STRING_RESULT; } 00044 int64_t val_int() { assert(fixed == 1); return value; } 00045 int save_in_field(Field *to, bool no_conversions); 00046 String *val_str(String *str); 00047 void fix_length_and_dec(); 00057 bool get_temporal(DateTime &temporal); 00058 bool get_date(type::Time &res, uint32_t fuzzy_date); 00059 virtual void store_now_in_TIME(type::Time &now_time)=0; 00060 }; 00061 00062 class Item_func_now_local :public Item_func_now 00063 { 00064 public: 00065 Item_func_now_local() :Item_func_now() {} 00066 Item_func_now_local(Item *a) :Item_func_now(a) {} 00067 const char *func_name() const { return "now"; } 00068 virtual void store_now_in_TIME(type::Time &now_time); 00069 virtual enum Functype functype() const { return NOW_FUNC; } 00070 }; 00071 00072 00073 class Item_func_now_utc :public Item_func_now 00074 { 00075 public: 00076 Item_func_now_utc() :Item_func_now() {} 00077 Item_func_now_utc(Item *a) :Item_func_now(a) {} 00078 const char *func_name() const { return "utc_timestamp"; } 00079 virtual void store_now_in_TIME(type::Time &now_time); 00080 }; 00081 00082 } /* namespace drizzled */ 00083