blob: 8e1921dbc5e79836050bdffbc1670c06f163b7e8 (
plain)
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
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
|
<?php if (!defined('BASEPATH')) exit('No direct script access allowed');
/**
* Code Igniter
*
* An open source application development framework for PHP 4.3.2 or newer
*
* @package CodeIgniter
* @author Rick Ellis
* @copyright Copyright (c) 2006, pMachine, Inc.
* @license http://www.codeignitor.com/user_guide/license.html
* @link http://www.codeigniter.com
* @since Version 1.0
* @filesource
*/
// ------------------------------------------------------------------------
/**
* Database Utility Class
*
* @category Database
* @author Rick Ellis
* @link http://www.codeigniter.com/user_guide/database/
*/
class CI_DB_utility {
var $db;
function CI_DB_utility()
{
// Assign the main database object to $this->db
$obj =& get_instance();
$this->db =& $obj->db;
}
/**
* Database Version Number. Returns a string containing the
* version of the database being used
*
* @access public
* @return string
*/
function version()
{
if (FALSE === ($sql = $this->_version()))
{
if ($this->db->db_debug)
{
return $this->db->display_error('db_unsupported_function');
}
return FALSE;
}
if ($this->db->dbdriver == 'oci8')
{
return $sql;
}
$query = $this->db->query($sql);
$row = $query->row();
return $row->ver;
}
// --------------------------------------------------------------------
/**
* Returns an array of table names
*
* @access public
* @return array
*/
function tables()
{
if (FALSE === ($sql = $this->_show_tables()))
{
if ($this->db->db_debug)
{
return $this->db->display_error('db_unsupported_function');
}
return FALSE;
}
$retval = array();
$query = $this->db->query($sql);
if ($query->num_rows() > 0)
{
foreach($query->result_array() as $row)
{
if (isset($row['TABLE_NAME']))
{
$retval[] = $row['TABLE_NAME'];
}
else
{
$retval[] = array_shift($row);
}
}
}
return $retval;
}
// --------------------------------------------------------------------
/**
* Determine if a particular table exists
* @access public
* @return boolean
*/
function table_exists($table_name)
{
return ( ! in_array($this->db->dbprefix.$table_name, $this->tables())) ? FALSE : TRUE;
}
// --------------------------------------------------------------------
/**
* Fetch MySQL Field Names
*
* @access public
* @param string the table name
* @return array
*/
function field_names($table = '')
{
if ($table == '')
{
if ($this->db->db_debug)
{
return $this->db->display_error('db_field_param_missing');
}
return FALSE;
}
if (FALSE === ($sql = $this->_show_columns($this->db->dbprefix.$table)))
{
if ($this->db->db_debug)
{
return $this->db->display_error('db_unsupported_function');
}
return FALSE;
}
$query = $this->db->query($sql);
$retval = array();
foreach($query->result_array() as $row)
{
if (isset($row['COLUMN_NAME']))
{
$retval[] = $row['COLUMN_NAME'];
}
else
{
$retval[] = current($row);
}
}
return $retval;
}
// --------------------------------------------------------------------
/**
* Returns an object with field data
*
* @access public
* @param string the table name
* @return object
*/
function field_data($table = '')
{
if ($table == '')
{
if ($this->db->db_debug)
{
return $this->db->display_error('db_field_param_missing');
}
return FALSE;
}
return $this->_field_data($this->db->dbprefix.$table);
}
// --------------------------------------------------------------------
/**
* Primary
*
* Retrieves the primary key. It assumes that the row in the first
* position is the primary key
*
* @access public
* @param string the table name
* @return string
*/
function primary($table = '')
{
$fields = $this->field_names($table);
if ( ! is_array($fields))
{
return FALSE;
}
return current($fields);
}
function create_table()
{
}
function alter_table()
{
}
function create_index()
{
}
function drop_index()
{
}
function optimize()
{
}
}
?>
|
