Drizzled Public API Documentation

int.cc
1 /* -*- mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; -*-
2  * vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
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 #include <config.h>
21 
22 #include <drizzled/charset.h>
23 #include <drizzled/field.h>
24 #include <drizzled/internal/m_string.h>
25 #include <drizzled/item/int.h>
26 
27 namespace drizzled {
28 
35 Item_int::Item_int(const char *str_arg, uint32_t length)
36 {
37  char *end_ptr= (char*) str_arg + length;
38  int error;
39  value= internal::my_strtoll10(str_arg, &end_ptr, &error);
40  max_length= (uint32_t) (end_ptr - str_arg);
41  name= (char*) str_arg;
42  fixed= 1;
43 }
44 
46 {
47  int2_class_decimal(E_DEC_FATAL_ERROR, value, unsigned_flag, decimal_value);
48  return decimal_value;
49 }
50 
52 {
53  // following assert is redundant, because fixed=1 assigned in constructor
54  assert(fixed == 1);
55  str->set(value, &my_charset_bin);
56  return str;
57 }
58 
60 {
61  // my_charset_bin is good enough for numbers
62  str_value.set(value, &my_charset_bin);
63  str->append(str_value);
64 }
65 
66 int Item_int::save_in_field(Field *field, bool)
67 {
68  int64_t nr=val_int();
69  if (null_value)
70  return set_field_to_null(field);
71  field->set_notnull();
72  return field->store(nr, unsigned_flag);
73 }
74 
75 bool Item_int::eq(const Item *arg, bool) const
76 {
77  /* No need to check for null value as basic constant can't be NULL */
78  if (arg->basic_const_item() && arg->type() == type())
79  {
80  /*
81  We need to cast off const to call val_int(). This should be OK for
82  a basic constant.
83  */
84  Item *item= (Item*) arg;
85  return item->val_int() == value && item->unsigned_flag == unsigned_flag;
86  }
87  return false;
88 }
89 
90 
91 } /* namespace drizzled */