Drizzled Public API Documentation

signed.h
00001 /* - mode: c++ c-basic-offset: 2; indent-tabs-mode: nil; -*-
00002  *  vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
00003  *
00004  *  Copyright (C) 2010 Brian Aker
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; either version 2 of the License, or
00009  *  (at your option) any later version.
00010  *
00011  *  This program is distributed in the hope that it will be useful,
00012  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
00013  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00014  *  GNU General Public License for more details.
00015  *
00016  *  You should have received a copy of the GNU General Public License
00017  *  along with this program; if not, write to the Free Software
00018  *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
00019  */
00020 
00021 #pragma once
00022 
00023 #include <drizzled/function/math/int.h>
00024 
00025 namespace drizzled {
00026 namespace function {
00027 namespace cast {
00028 
00029 class Signed : public Item_int_func
00030 {
00031 public:
00032   Signed(Item *a) :
00033     Item_int_func(a)
00034   {}
00035 
00036   const char *func_name() const { return "cast_as_signed"; }
00037 
00038   int64_t val_int();
00039 
00040   void fix_length_and_dec()
00041   {
00042     fix_char_length(args[0]->max_char_length());
00043     unsigned_flag= false;
00044   }
00045 
00046   void print(String *str);
00047 
00048   uint32_t decimal_precision() const
00049   {
00050     return args[0]->decimal_precision();
00051   }
00052 };
00053 
00054 } // namespace cast
00055 } // namespace function
00056 } // namespace drizzled
00057