Drizzled Public API Documentation

now.h
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