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
53
54
55
56
|
/* -*- 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
#include <drizzled/item/ident.h>
#include <drizzled/item/field.h>
namespace drizzled {
class Item_default_value : public Item_field
{
public:
Item *arg;
Item_default_value(Name_resolution_context *context_arg)
:Item_field(context_arg, (const char *)NULL, (const char *)NULL,
(const char *)NULL),
arg(NULL) {}
Item_default_value(Name_resolution_context *context_arg, Item *a)
:Item_field(context_arg, (const char *)NULL, (const char *)NULL,
(const char *)NULL),
arg(a) {}
enum Type type() const { return DEFAULT_VALUE_ITEM; }
bool eq(const Item *item, bool binary_cmp) const;
bool fix_fields(Session *, Item **);
virtual void print(String *str);
int save_in_field(Field *field_arg, bool no_conversions);
table_map used_tables() const { return (table_map)0L; }
bool walk(Item_processor processor, bool walk_subquery, unsigned char *args)
{
return arg->walk(processor, walk_subquery, args) ||
(this->*processor)(args);
}
Item *transform(Item_transformer transformer, unsigned char *args);
};
} /* namespace drizzled */
|