1 | <?php
|
---|
2 | /**
|
---|
3 | *
|
---|
4 | * @package dbal
|
---|
5 | * @version $Id$
|
---|
6 | * @copyright (c) 2005 phpBB Group
|
---|
7 | * @license http://opensource.org/licenses/gpl-license.php GNU Public License
|
---|
8 | *
|
---|
9 | */
|
---|
10 |
|
---|
11 | /**
|
---|
12 | * @ignore
|
---|
13 | */
|
---|
14 | if (!defined('IN_PHPBB'))
|
---|
15 | {
|
---|
16 | exit;
|
---|
17 | }
|
---|
18 |
|
---|
19 | include_once($phpbb_root_path . 'includes/db/dbal.' . $phpEx);
|
---|
20 |
|
---|
21 | /**
|
---|
22 | * PostgreSQL Database Abstraction Layer
|
---|
23 | * Minimum Requirement is Version 7.3+
|
---|
24 | * @package dbal
|
---|
25 | */
|
---|
26 | class dbal_postgres extends dbal
|
---|
27 | {
|
---|
28 | var $last_query_text = '';
|
---|
29 |
|
---|
30 | /**
|
---|
31 | * Connect to server
|
---|
32 | */
|
---|
33 | function sql_connect($sqlserver, $sqluser, $sqlpassword, $database, $port = false, $persistency = false, $new_link = false)
|
---|
34 | {
|
---|
35 | $connect_string = '';
|
---|
36 |
|
---|
37 | if ($sqluser)
|
---|
38 | {
|
---|
39 | $connect_string .= "user=$sqluser ";
|
---|
40 | }
|
---|
41 |
|
---|
42 | if ($sqlpassword)
|
---|
43 | {
|
---|
44 | $connect_string .= "password=$sqlpassword ";
|
---|
45 | }
|
---|
46 |
|
---|
47 | if ($sqlserver)
|
---|
48 | {
|
---|
49 | if (strpos($sqlserver, ':') !== false)
|
---|
50 | {
|
---|
51 | list($sqlserver, $port) = explode(':', $sqlserver);
|
---|
52 | }
|
---|
53 |
|
---|
54 | if ($sqlserver !== 'localhost')
|
---|
55 | {
|
---|
56 | $connect_string .= "host=$sqlserver ";
|
---|
57 | }
|
---|
58 |
|
---|
59 | if ($port)
|
---|
60 | {
|
---|
61 | $connect_string .= "port=$port ";
|
---|
62 | }
|
---|
63 | }
|
---|
64 |
|
---|
65 | $schema = '';
|
---|
66 |
|
---|
67 | if ($database)
|
---|
68 | {
|
---|
69 | $this->dbname = $database;
|
---|
70 | if (strpos($database, '.') !== false)
|
---|
71 | {
|
---|
72 | list($database, $schema) = explode('.', $database);
|
---|
73 | }
|
---|
74 | $connect_string .= "dbname=$database";
|
---|
75 | }
|
---|
76 |
|
---|
77 | $this->persistency = $persistency;
|
---|
78 |
|
---|
79 | $this->db_connect_id = ($this->persistency) ? @pg_pconnect($connect_string, $new_link) : @pg_connect($connect_string, $new_link);
|
---|
80 |
|
---|
81 | if ($this->db_connect_id)
|
---|
82 | {
|
---|
83 | if (version_compare($this->sql_server_info(true), '8.2', '>='))
|
---|
84 | {
|
---|
85 | $this->multi_insert = true;
|
---|
86 | }
|
---|
87 |
|
---|
88 | if ($schema !== '')
|
---|
89 | {
|
---|
90 | @pg_query($this->db_connect_id, 'SET search_path TO ' . $schema);
|
---|
91 | }
|
---|
92 | return $this->db_connect_id;
|
---|
93 | }
|
---|
94 |
|
---|
95 | return $this->sql_error('');
|
---|
96 | }
|
---|
97 |
|
---|
98 | /**
|
---|
99 | * Version information about used database
|
---|
100 | * @param bool $raw if true, only return the fetched sql_server_version
|
---|
101 | * @return string sql server version
|
---|
102 | */
|
---|
103 | function sql_server_info($raw = false)
|
---|
104 | {
|
---|
105 | global $cache;
|
---|
106 |
|
---|
107 | if (empty($cache) || ($this->sql_server_version = $cache->get('pgsql_version')) === false)
|
---|
108 | {
|
---|
109 | $query_id = @pg_query($this->db_connect_id, 'SELECT VERSION() AS version');
|
---|
110 | $row = @pg_fetch_assoc($query_id, null);
|
---|
111 | @pg_free_result($query_id);
|
---|
112 |
|
---|
113 | $this->sql_server_version = (!empty($row['version'])) ? trim(substr($row['version'], 10)) : 0;
|
---|
114 |
|
---|
115 | if (!empty($cache))
|
---|
116 | {
|
---|
117 | $cache->put('pgsql_version', $this->sql_server_version);
|
---|
118 | }
|
---|
119 | }
|
---|
120 |
|
---|
121 | return ($raw) ? $this->sql_server_version : 'PostgreSQL ' . $this->sql_server_version;
|
---|
122 | }
|
---|
123 |
|
---|
124 | /**
|
---|
125 | * SQL Transaction
|
---|
126 | * @access private
|
---|
127 | */
|
---|
128 | function _sql_transaction($status = 'begin')
|
---|
129 | {
|
---|
130 | switch ($status)
|
---|
131 | {
|
---|
132 | case 'begin':
|
---|
133 | return @pg_query($this->db_connect_id, 'BEGIN');
|
---|
134 | break;
|
---|
135 |
|
---|
136 | case 'commit':
|
---|
137 | return @pg_query($this->db_connect_id, 'COMMIT');
|
---|
138 | break;
|
---|
139 |
|
---|
140 | case 'rollback':
|
---|
141 | return @pg_query($this->db_connect_id, 'ROLLBACK');
|
---|
142 | break;
|
---|
143 | }
|
---|
144 |
|
---|
145 | return true;
|
---|
146 | }
|
---|
147 |
|
---|
148 | /**
|
---|
149 | * Base query method
|
---|
150 | *
|
---|
151 | * @param string $query Contains the SQL query which shall be executed
|
---|
152 | * @param int $cache_ttl Either 0 to avoid caching or the time in seconds which the result shall be kept in cache
|
---|
153 | * @return mixed When casted to bool the returned value returns true on success and false on failure
|
---|
154 | *
|
---|
155 | * @access public
|
---|
156 | */
|
---|
157 | function sql_query($query = '', $cache_ttl = 0)
|
---|
158 | {
|
---|
159 | if ($query != '')
|
---|
160 | {
|
---|
161 | global $cache;
|
---|
162 |
|
---|
163 | // EXPLAIN only in extra debug mode
|
---|
164 | if (defined('DEBUG_EXTRA'))
|
---|
165 | {
|
---|
166 | $this->sql_report('start', $query);
|
---|
167 | }
|
---|
168 |
|
---|
169 | $this->last_query_text = $query;
|
---|
170 | $this->query_result = ($cache_ttl && method_exists($cache, 'sql_load')) ? $cache->sql_load($query) : false;
|
---|
171 | $this->sql_add_num_queries($this->query_result);
|
---|
172 |
|
---|
173 | if ($this->query_result === false)
|
---|
174 | {
|
---|
175 | if (($this->query_result = @pg_query($this->db_connect_id, $query)) === false)
|
---|
176 | {
|
---|
177 | $this->sql_error($query);
|
---|
178 | }
|
---|
179 |
|
---|
180 | if (defined('DEBUG_EXTRA'))
|
---|
181 | {
|
---|
182 | $this->sql_report('stop', $query);
|
---|
183 | }
|
---|
184 |
|
---|
185 | if ($cache_ttl && method_exists($cache, 'sql_save'))
|
---|
186 | {
|
---|
187 | $this->open_queries[(int) $this->query_result] = $this->query_result;
|
---|
188 | $cache->sql_save($query, $this->query_result, $cache_ttl);
|
---|
189 | }
|
---|
190 | else if (strpos($query, 'SELECT') === 0 && $this->query_result)
|
---|
191 | {
|
---|
192 | $this->open_queries[(int) $this->query_result] = $this->query_result;
|
---|
193 | }
|
---|
194 | }
|
---|
195 | else if (defined('DEBUG_EXTRA'))
|
---|
196 | {
|
---|
197 | $this->sql_report('fromcache', $query);
|
---|
198 | }
|
---|
199 | }
|
---|
200 | else
|
---|
201 | {
|
---|
202 | return false;
|
---|
203 | }
|
---|
204 |
|
---|
205 | return $this->query_result;
|
---|
206 | }
|
---|
207 |
|
---|
208 | /**
|
---|
209 | * Build db-specific query data
|
---|
210 | * @access private
|
---|
211 | */
|
---|
212 | function _sql_custom_build($stage, $data)
|
---|
213 | {
|
---|
214 | return $data;
|
---|
215 | }
|
---|
216 |
|
---|
217 | /**
|
---|
218 | * Build LIMIT query
|
---|
219 | */
|
---|
220 | function _sql_query_limit($query, $total, $offset = 0, $cache_ttl = 0)
|
---|
221 | {
|
---|
222 | $this->query_result = false;
|
---|
223 |
|
---|
224 | // if $total is set to 0 we do not want to limit the number of rows
|
---|
225 | if ($total == 0)
|
---|
226 | {
|
---|
227 | $total = 'ALL';
|
---|
228 | }
|
---|
229 |
|
---|
230 | $query .= "\n LIMIT $total OFFSET $offset";
|
---|
231 |
|
---|
232 | return $this->sql_query($query, $cache_ttl);
|
---|
233 | }
|
---|
234 |
|
---|
235 | /**
|
---|
236 | * Return number of affected rows
|
---|
237 | */
|
---|
238 | function sql_affectedrows()
|
---|
239 | {
|
---|
240 | return ($this->query_result) ? @pg_affected_rows($this->query_result) : false;
|
---|
241 | }
|
---|
242 |
|
---|
243 | /**
|
---|
244 | * Fetch current row
|
---|
245 | */
|
---|
246 | function sql_fetchrow($query_id = false)
|
---|
247 | {
|
---|
248 | global $cache;
|
---|
249 |
|
---|
250 | if ($query_id === false)
|
---|
251 | {
|
---|
252 | $query_id = $this->query_result;
|
---|
253 | }
|
---|
254 |
|
---|
255 | if (isset($cache->sql_rowset[$query_id]))
|
---|
256 | {
|
---|
257 | return $cache->sql_fetchrow($query_id);
|
---|
258 | }
|
---|
259 |
|
---|
260 | return ($query_id !== false) ? @pg_fetch_assoc($query_id, null) : false;
|
---|
261 | }
|
---|
262 |
|
---|
263 | /**
|
---|
264 | * Seek to given row number
|
---|
265 | * rownum is zero-based
|
---|
266 | */
|
---|
267 | function sql_rowseek($rownum, &$query_id)
|
---|
268 | {
|
---|
269 | global $cache;
|
---|
270 |
|
---|
271 | if ($query_id === false)
|
---|
272 | {
|
---|
273 | $query_id = $this->query_result;
|
---|
274 | }
|
---|
275 |
|
---|
276 | if (isset($cache->sql_rowset[$query_id]))
|
---|
277 | {
|
---|
278 | return $cache->sql_rowseek($rownum, $query_id);
|
---|
279 | }
|
---|
280 |
|
---|
281 | return ($query_id !== false) ? @pg_result_seek($query_id, $rownum) : false;
|
---|
282 | }
|
---|
283 |
|
---|
284 | /**
|
---|
285 | * Get last inserted id after insert statement
|
---|
286 | */
|
---|
287 | function sql_nextid()
|
---|
288 | {
|
---|
289 | $query_id = $this->query_result;
|
---|
290 |
|
---|
291 | if ($query_id !== false && $this->last_query_text != '')
|
---|
292 | {
|
---|
293 | if (preg_match("/^INSERT[\t\n ]+INTO[\t\n ]+([a-z0-9\_\-]+)/is", $this->last_query_text, $tablename))
|
---|
294 | {
|
---|
295 | $query = "SELECT currval('" . $tablename[1] . "_seq') AS last_value";
|
---|
296 | $temp_q_id = @pg_query($this->db_connect_id, $query);
|
---|
297 |
|
---|
298 | if (!$temp_q_id)
|
---|
299 | {
|
---|
300 | return false;
|
---|
301 | }
|
---|
302 |
|
---|
303 | $temp_result = @pg_fetch_assoc($temp_q_id, NULL);
|
---|
304 | @pg_free_result($query_id);
|
---|
305 |
|
---|
306 | return ($temp_result) ? $temp_result['last_value'] : false;
|
---|
307 | }
|
---|
308 | }
|
---|
309 |
|
---|
310 | return false;
|
---|
311 | }
|
---|
312 |
|
---|
313 | /**
|
---|
314 | * Free sql result
|
---|
315 | */
|
---|
316 | function sql_freeresult($query_id = false)
|
---|
317 | {
|
---|
318 | global $cache;
|
---|
319 |
|
---|
320 | if ($query_id === false)
|
---|
321 | {
|
---|
322 | $query_id = $this->query_result;
|
---|
323 | }
|
---|
324 |
|
---|
325 | if (isset($cache->sql_rowset[$query_id]))
|
---|
326 | {
|
---|
327 | return $cache->sql_freeresult($query_id);
|
---|
328 | }
|
---|
329 |
|
---|
330 | if (isset($this->open_queries[(int) $query_id]))
|
---|
331 | {
|
---|
332 | unset($this->open_queries[(int) $query_id]);
|
---|
333 | return @pg_free_result($query_id);
|
---|
334 | }
|
---|
335 |
|
---|
336 | return false;
|
---|
337 | }
|
---|
338 |
|
---|
339 | /**
|
---|
340 | * Escape string used in sql query
|
---|
341 | * Note: Do not use for bytea values if we may use them at a later stage
|
---|
342 | */
|
---|
343 | function sql_escape($msg)
|
---|
344 | {
|
---|
345 | return @pg_escape_string($msg);
|
---|
346 | }
|
---|
347 |
|
---|
348 | /**
|
---|
349 | * Build LIKE expression
|
---|
350 | * @access private
|
---|
351 | */
|
---|
352 | function _sql_like_expression($expression)
|
---|
353 | {
|
---|
354 | return $expression;
|
---|
355 | }
|
---|
356 |
|
---|
357 | /**
|
---|
358 | * return sql error array
|
---|
359 | * @access private
|
---|
360 | */
|
---|
361 | function _sql_error()
|
---|
362 | {
|
---|
363 | return array(
|
---|
364 | 'message' => (!$this->db_connect_id) ? @pg_last_error() : @pg_last_error($this->db_connect_id),
|
---|
365 | 'code' => ''
|
---|
366 | );
|
---|
367 | }
|
---|
368 |
|
---|
369 | /**
|
---|
370 | * Close sql connection
|
---|
371 | * @access private
|
---|
372 | */
|
---|
373 | function _sql_close()
|
---|
374 | {
|
---|
375 | return @pg_close($this->db_connect_id);
|
---|
376 | }
|
---|
377 |
|
---|
378 | /**
|
---|
379 | * Build db-specific report
|
---|
380 | * @access private
|
---|
381 | */
|
---|
382 | function _sql_report($mode, $query = '')
|
---|
383 | {
|
---|
384 | switch ($mode)
|
---|
385 | {
|
---|
386 | case 'start':
|
---|
387 |
|
---|
388 | $explain_query = $query;
|
---|
389 | if (preg_match('/UPDATE ([a-z0-9_]+).*?WHERE(.*)/s', $query, $m))
|
---|
390 | {
|
---|
391 | $explain_query = 'SELECT * FROM ' . $m[1] . ' WHERE ' . $m[2];
|
---|
392 | }
|
---|
393 | else if (preg_match('/DELETE FROM ([a-z0-9_]+).*?WHERE(.*)/s', $query, $m))
|
---|
394 | {
|
---|
395 | $explain_query = 'SELECT * FROM ' . $m[1] . ' WHERE ' . $m[2];
|
---|
396 | }
|
---|
397 |
|
---|
398 | if (preg_match('/^SELECT/', $explain_query))
|
---|
399 | {
|
---|
400 | $html_table = false;
|
---|
401 |
|
---|
402 | if ($result = @pg_query($this->db_connect_id, "EXPLAIN $explain_query"))
|
---|
403 | {
|
---|
404 | while ($row = @pg_fetch_assoc($result, NULL))
|
---|
405 | {
|
---|
406 | $html_table = $this->sql_report('add_select_row', $query, $html_table, $row);
|
---|
407 | }
|
---|
408 | }
|
---|
409 | @pg_free_result($result);
|
---|
410 |
|
---|
411 | if ($html_table)
|
---|
412 | {
|
---|
413 | $this->html_hold .= '</table>';
|
---|
414 | }
|
---|
415 | }
|
---|
416 |
|
---|
417 | break;
|
---|
418 |
|
---|
419 | case 'fromcache':
|
---|
420 | $endtime = explode(' ', microtime());
|
---|
421 | $endtime = $endtime[0] + $endtime[1];
|
---|
422 |
|
---|
423 | $result = @pg_query($this->db_connect_id, $query);
|
---|
424 | while ($void = @pg_fetch_assoc($result, NULL))
|
---|
425 | {
|
---|
426 | // Take the time spent on parsing rows into account
|
---|
427 | }
|
---|
428 | @pg_free_result($result);
|
---|
429 |
|
---|
430 | $splittime = explode(' ', microtime());
|
---|
431 | $splittime = $splittime[0] + $splittime[1];
|
---|
432 |
|
---|
433 | $this->sql_report('record_fromcache', $query, $endtime, $splittime);
|
---|
434 |
|
---|
435 | break;
|
---|
436 | }
|
---|
437 | }
|
---|
438 | }
|
---|
439 |
|
---|
440 | ?>
|
---|