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 /* 00023 The following class is used to optimize comparing of date and bigint columns 00024 We need to save the original item ('ref') to be able to call 00025 ref->save_in_field(). This is used to create index search keys. 00026 00027 An instance of Item_int_with_ref may have signed or unsigned integer value. 00028 00029 */ 00030 00031 namespace drizzled 00032 { 00033 00034 class Item_int_with_ref :public Item_int 00035 { 00036 Item *ref; 00037 public: 00038 Item_int_with_ref(int64_t i, Item *ref_arg, bool unsigned_arg) : 00039 Item_int(i), ref(ref_arg) 00040 { 00041 unsigned_flag= unsigned_arg; 00042 } 00043 int save_in_field(Field *field, bool no_conversions) 00044 { 00045 return ref->save_in_field(field, no_conversions); 00046 } 00047 Item *clone_item(); 00048 virtual Item *real_item() { return ref; } 00049 virtual const Item *real_item() const { return ref; } 00050 }; 00051 00052 } /* namespace drizzled */ 00053