1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
|
/* -*- mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; -*-
* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
*
* Copyright (C) 2008 Sun Microsystems, Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#pragma once
/*
The following class is used to optimize comparing of date and bigint columns
We need to save the original item ('ref') to be able to call
ref->save_in_field(). This is used to create index search keys.
An instance of Item_int_with_ref may have signed or unsigned integer value.
*/
namespace drizzled {
class Item_int_with_ref :public Item_int
{
Item *ref;
public:
Item_int_with_ref(int64_t i, Item *ref_arg, bool unsigned_arg) :
Item_int(i), ref(ref_arg)
{
unsigned_flag= unsigned_arg;
}
int save_in_field(Field *field, bool no_conversions)
{
return ref->save_in_field(field, no_conversions);
}
Item *clone_item();
virtual Item *real_item() { return ref; }
virtual const Item *real_item() const { return ref; }
};
} /* namespace drizzled */
|