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1 | <?php if ( ! defined('BASEPATH')) exit('No direct script access allowed'); |
2 | /** | |
3 | * CodeIgniter | |
4 | * | |
5 | * An open source application development framework for PHP 5.1.6 or newer | |
6 | * | |
7 | * @package CodeIgniter | |
8 | * @author Esen Sagynov | |
9 | * @copyright Copyright (c) 2008 - 2011, EllisLab, Inc. | |
10 | * @license http://codeigniter.com/user_guide/license.html | |
11 | * @link http://codeigniter.com | |
12 | * @since Version 1.0 | |
13 | * @filesource | |
14 | */ | |
15 | ||
16 | // ------------------------------------------------------------------------ | |
17 | ||
18 | /** | |
19 | * CUBRID Forge Class | |
20 | * | |
21 | * @category Database | |
22 | * @author Esen Sagynov | |
23 | * @link http://codeigniter.com/user_guide/database/ | |
24 | */ | |
25 | class CI_DB_cubrid_forge extends CI_DB_forge { | |
26 | ||
27 | /** | |
28 | * Create database | |
29 | * | |
30 | * @access private | |
31 | * @param string the database name | |
32 | * @return bool | |
33 | */ | |
34 | function _create_database($name) | |
35 | { | |
36 | // CUBRID does not allow to create a database in SQL. The GUI tools | |
37 | // have to be used for this purpose. | |
38 | return FALSE; | |
39 | } | |
40 | ||
41 | // -------------------------------------------------------------------- | |
42 | ||
43 | /** | |
44 | * Drop database | |
45 | * | |
46 | * @access private | |
47 | * @param string the database name | |
48 | * @return bool | |
49 | */ | |
50 | function _drop_database($name) | |
51 | { | |
52 | // CUBRID does not allow to drop a database in SQL. The GUI tools | |
53 | // have to be used for this purpose. | |
54 | return FALSE; | |
55 | } | |
56 | ||
57 | // -------------------------------------------------------------------- | |
58 | ||
59 | /** | |
60 | * Process Fields | |
61 | * | |
62 | * @access private | |
63 | * @param mixed the fields | |
64 | * @return string | |
65 | */ | |
66 | function _process_fields($fields) | |
67 | { | |
68 | $current_field_count = 0; | |
69 | $sql = ''; | |
70 | ||
71 | foreach ($fields as $field=>$attributes) | |
72 | { | |
73 | // Numeric field names aren't allowed in databases, so if the key is | |
74 | // numeric, we know it was assigned by PHP and the developer manually | |
75 | // entered the field information, so we'll simply add it to the list | |
76 | if (is_numeric($field)) | |
77 | { | |
78 | $sql .= "\n\t$attributes"; | |
79 | } | |
80 | else | |
81 | { | |
82 | $attributes = array_change_key_case($attributes, CASE_UPPER); | |
83 | ||
84 | $sql .= "\n\t\"" . $this->db->_protect_identifiers($field) . "\""; | |
85 | ||
86 | if (array_key_exists('NAME', $attributes)) | |
87 | { | |
88 | $sql .= ' '.$this->db->_protect_identifiers($attributes['NAME']).' '; | |
89 | } | |
90 | ||
91 | if (array_key_exists('TYPE', $attributes)) | |
92 | { | |
93 | $sql .= ' '.$attributes['TYPE']; | |
94 | ||
95 | if (array_key_exists('CONSTRAINT', $attributes)) | |
96 | { | |
97 | switch ($attributes['TYPE']) | |
98 | { | |
99 | case 'decimal': | |
100 | case 'float': | |
101 | case 'numeric': | |
102 | $sql .= '('.implode(',', $attributes['CONSTRAINT']).')'; | |
103 | break; | |
104 | case 'enum': // As of version 8.4.0 CUBRID does not support | |
105 | // enum data type. | |
106 | break; | |
107 | case 'set': | |
108 | $sql .= '("'.implode('","', $attributes['CONSTRAINT']).'")'; | |
109 | break; | |
110 | default: | |
111 | $sql .= '('.$attributes['CONSTRAINT'].')'; | |
112 | } | |
113 | } | |
114 | } | |
115 | ||
116 | if (array_key_exists('UNSIGNED', $attributes) && $attributes['UNSIGNED'] === TRUE) | |
117 | { | |
118 | //$sql .= ' UNSIGNED'; | |
119 | // As of version 8.4.0 CUBRID does not support UNSIGNED INTEGER data type. | |
120 | // Will be supported in the next release as a part of MySQL Compatibility. | |
121 | } | |
122 | ||
123 | if (array_key_exists('DEFAULT', $attributes)) | |
124 | { | |
125 | $sql .= ' DEFAULT \''.$attributes['DEFAULT'].'\''; | |
126 | } | |
127 | ||
128 | if (array_key_exists('NULL', $attributes) && $attributes['NULL'] === TRUE) | |
129 | { | |
130 | $sql .= ' NULL'; | |
131 | } | |
132 | else | |
133 | { | |
134 | $sql .= ' NOT NULL'; | |
135 | } | |
136 | ||
137 | if (array_key_exists('AUTO_INCREMENT', $attributes) && $attributes['AUTO_INCREMENT'] === TRUE) | |
138 | { | |
139 | $sql .= ' AUTO_INCREMENT'; | |
140 | } | |
141 | ||
142 | if (array_key_exists('UNIQUE', $attributes) && $attributes['UNIQUE'] === TRUE) | |
143 | { | |
144 | $sql .= ' UNIQUE'; | |
145 | } | |
146 | } | |
147 | ||
148 | // don't add a comma on the end of the last field | |
149 | if (++$current_field_count < count($fields)) | |
150 | { | |
151 | $sql .= ','; | |
152 | } | |
153 | } | |
154 | ||
155 | return $sql; | |
156 | } | |
157 | ||
158 | // -------------------------------------------------------------------- | |
159 | ||
160 | /** | |
161 | * Create Table | |
162 | * | |
163 | * @access private | |
164 | * @param string the table name | |
165 | * @param mixed the fields | |
166 | * @param mixed primary key(s) | |
167 | * @param mixed key(s) | |
168 | * @param boolean should 'IF NOT EXISTS' be added to the SQL | |
169 | * @return bool | |
170 | */ | |
171 | function _create_table($table, $fields, $primary_keys, $keys, $if_not_exists) | |
172 | { | |
173 | $sql = 'CREATE TABLE '; | |
174 | ||
175 | if ($if_not_exists === TRUE) | |
176 | { | |
177 | //$sql .= 'IF NOT EXISTS '; | |
178 | // As of version 8.4.0 CUBRID does not support this SQL syntax. | |
179 | } | |
180 | ||
181 | $sql .= $this->db->_escape_identifiers($table)." ("; | |
182 | ||
183 | $sql .= $this->_process_fields($fields); | |
184 | ||
185 | // If there is a PK defined | |
186 | if (count($primary_keys) > 0) | |
187 | { | |
188 | $key_name = "pk_" . $table . "_" . | |
189 | $this->db->_protect_identifiers(implode('_', $primary_keys)); | |
190 | ||
191 | $primary_keys = $this->db->_protect_identifiers($primary_keys); | |
192 | $sql .= ",\n\tCONSTRAINT " . $key_name . " PRIMARY KEY(" . implode(', ', $primary_keys) . ")"; | |
193 | } | |
194 | ||
195 | if (is_array($keys) && count($keys) > 0) | |
196 | { | |
197 | foreach ($keys as $key) | |
198 | { | |
199 | if (is_array($key)) | |
200 | { | |
201 | $key_name = $this->db->_protect_identifiers(implode('_', $key)); | |
202 | $key = $this->db->_protect_identifiers($key); | |
203 | } | |
204 | else | |
205 | { | |
206 | $key_name = $this->db->_protect_identifiers($key); | |
207 | $key = array($key_name); | |
208 | } | |
209 | ||
210 | $sql .= ",\n\tKEY \"{$key_name}\" (" . implode(', ', $key) . ")"; | |
211 | } | |
212 | } | |
213 | ||
214 | $sql .= "\n);"; | |
215 | ||
216 | return $sql; | |
217 | } | |
218 | ||
219 | // -------------------------------------------------------------------- | |
220 | ||
221 | /** | |
222 | * Drop Table | |
223 | * | |
224 | * @access private | |
225 | * @return string | |
226 | */ | |
227 | function _drop_table($table) | |
228 | { | |
229 | return "DROP TABLE IF EXISTS ".$this->db->_escape_identifiers($table); | |
230 | } | |
231 | ||
232 | // -------------------------------------------------------------------- | |
233 | ||
234 | /** | |
235 | * Alter table query | |
236 | * | |
237 | * Generates a platform-specific query so that a table can be altered | |
238 | * Called by add_column(), drop_column(), and column_alter(), | |
239 | * | |
240 | * @access private | |
241 | * @param string the ALTER type (ADD, DROP, CHANGE) | |
242 | * @param string the column name | |
243 | * @param array fields | |
244 | * @param string the field after which we should add the new field | |
245 | * @return object | |
246 | */ | |
247 | function _alter_table($alter_type, $table, $fields, $after_field = '') | |
248 | { | |
249 | $sql = 'ALTER TABLE '.$this->db->_protect_identifiers($table)." $alter_type "; | |
250 | ||
251 | // DROP has everything it needs now. | |
252 | if ($alter_type == 'DROP') | |
253 | { | |
254 | return $sql.$this->db->_protect_identifiers($fields); | |
255 | } | |
256 | ||
257 | $sql .= $this->_process_fields($fields); | |
258 | ||
259 | if ($after_field != '') | |
260 | { | |
261 | $sql .= ' AFTER ' . $this->db->_protect_identifiers($after_field); | |
262 | } | |
263 | ||
264 | return $sql; | |
265 | } | |
266 | ||
267 | // -------------------------------------------------------------------- | |
268 | ||
269 | /** | |
270 | * Rename a table | |
271 | * | |
272 | * Generates a platform-specific query so that a table can be renamed | |
273 | * | |
274 | * @access private | |
275 | * @param string the old table name | |
276 | * @param string the new table name | |
277 | * @return string | |
278 | */ | |
279 | function _rename_table($table_name, $new_table_name) | |
280 | { | |
281 | $sql = 'RENAME TABLE '.$this->db->_protect_identifiers($table_name)." AS ".$this->db->_protect_identifiers($new_table_name); | |
282 | return $sql; | |
283 | } | |
284 | ||
285 | } | |
286 | ||
287 | /* End of file cubrid_forge.php */ | |
288 | /* Location: ./system/database/drivers/cubrid/cubrid_forge.php */ |