Drizzled Public API Documentation

cached_item.h
1 /* -*- mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; -*-
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3  *
4  * Copyright (C) 2008 Sun Microsystems, Inc.
5  *
6  * This program is free software; you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License as published by
8  * the Free Software Foundation; version 2 of the License.
9  *
10  * This program is distributed in the hope that it will be useful,
11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13  * GNU General Public License for more details.
14  *
15  * You should have received a copy of the GNU General Public License
16  * along with this program; if not, write to the Free Software
17  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
18  */
19 
20 #pragma once
21 
22 #include <drizzled/memory/sql_alloc.h>
23 #include <drizzled/sql_string.h>
24 #include <drizzled/type/decimal.h>
25 
26 namespace drizzled {
27 
29 {
30 public:
31  bool null_value;
32  Cached_item() :null_value(0) {}
33  virtual bool cmp(void)=0;
34  virtual ~Cached_item(); /*line -e1509 */
35 };
36 
38 {
39  Item *item;
40  String value,tmp_value;
41 public:
42  Cached_item_str(Session *session, Item *arg);
43  bool cmp(void);
44  ~Cached_item_str(); // Deallocate String:s
45 };
46 
47 
49 {
50  Item *item;
51  double value;
52 public:
53  Cached_item_real(Item *item_par) :item(item_par),value(0.0) {}
54  bool cmp(void);
55 };
56 
58 {
59  Item *item;
60  int64_t value;
61 public:
62  Cached_item_int(Item *item_par) :item(item_par),value(0) {}
63  bool cmp(void);
64 };
65 
66 
68 {
69  Item *item;
70  type::Decimal value;
71 public:
72  Cached_item_decimal(Item *item_par);
73  bool cmp(void);
74 };
75 
77 {
78  unsigned char *buff;
79  Field *field;
80  uint32_t length;
81 
82 public:
83  Cached_item_field(Field *arg_field);
84  bool cmp(void);
85 };
86 
87 Cached_item *new_Cached_item(Session *session, Item *item);
88 
89 } /* namespace drizzled */
90 
Cached_item * new_Cached_item(Session *session, Item *item)
Definition: cached_item.cc:44
Cached_item_str(Session *session, Item *arg)
Definition: cached_item.cc:80