Drizzled Public API Documentation

decimal_typecast.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/func.h>
00023 #include <drizzled/type/decimal.h>
00024 
00025 namespace drizzled
00026 {
00027 
00028 class Item_decimal_typecast :public Item_func
00029 {
00030   type::Decimal decimal_value;
00031 public:
00032   Item_decimal_typecast(Item *a, int len, int dec) :Item_func(a)
00033   {
00034     decimals= dec;
00035     max_length= class_decimal_precision_to_length(len, dec, unsigned_flag);
00036   }
00037   String *val_str(String *str);
00038   double val_real();
00039   int64_t val_int();
00040   type::Decimal *val_decimal(type::Decimal*);
00041   enum Item_result result_type () const { return DECIMAL_RESULT; }
00042   enum_field_types field_type() const { return DRIZZLE_TYPE_DECIMAL; }
00043   void fix_length_and_dec() {};
00044   const char *func_name() const { return "decimal_typecast"; }
00045   virtual void print(String *str);
00046 };
00047 
00048 } /* namespace drizzled */
00049