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
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
|
/* -*- 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
*/
#ifndef DRIZZLED_CACHED_ITEM_H
#define DRIZZLED_CACHED_ITEM_H
#include <drizzled/memory/sql_alloc.h>
#include <drizzled/sql_string.h>
#include <drizzled/type/decimal.h>
namespace drizzled
{
class Item;
class Session;
class Field;
class Cached_item :public memory::SqlAlloc
{
public:
bool null_value;
Cached_item() :null_value(0) {}
virtual bool cmp(void)=0;
virtual ~Cached_item(); /*line -e1509 */
};
class Cached_item_str :public Cached_item
{
Item *item;
String value,tmp_value;
public:
Cached_item_str(Session *session, Item *arg);
bool cmp(void);
~Cached_item_str(); // Deallocate String:s
};
class Cached_item_real :public Cached_item
{
Item *item;
double value;
public:
Cached_item_real(Item *item_par) :item(item_par),value(0.0) {}
bool cmp(void);
};
class Cached_item_int :public Cached_item
{
Item *item;
int64_t value;
public:
Cached_item_int(Item *item_par) :item(item_par),value(0) {}
bool cmp(void);
};
class Cached_item_decimal :public Cached_item
{
Item *item;
type::Decimal value;
public:
Cached_item_decimal(Item *item_par);
bool cmp(void);
};
class Cached_item_field :public Cached_item
{
unsigned char *buff;
Field *field;
uint32_t length;
public:
Cached_item_field(Field *arg_field);
bool cmp(void);
};
Cached_item *new_Cached_item(Session *session, Item *item);
} /* namespace drizzled */
#endif /* DRIZZLED_CACHED_ITEM_H */
|