1 | <?php |
---|
2 | |
---|
3 | /* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */ |
---|
4 | |
---|
5 | /** |
---|
6 | * The PEAR DB driver for PHP's sybase extension |
---|
7 | * for interacting with Sybase databases |
---|
8 | * |
---|
9 | * PHP versions 4 and 5 |
---|
10 | * |
---|
11 | * LICENSE: This source file is subject to version 3.0 of the PHP license |
---|
12 | * that is available through the world-wide-web at the following URI: |
---|
13 | * http://www.php.net/license/3_0.txt. If you did not receive a copy of |
---|
14 | * the PHP License and are unable to obtain it through the web, please |
---|
15 | * send a note to license@php.net so we can mail you a copy immediately. |
---|
16 | * |
---|
17 | * @category Database |
---|
18 | * @package DB |
---|
19 | * @author Sterling Hughes <sterling@php.net> |
---|
20 | * @author Antônio Carlos Venâncio Júnior <floripa@php.net> |
---|
21 | * @author Daniel Convissor <danielc@php.net> |
---|
22 | * @copyright 1997-2007 The PHP Group |
---|
23 | * @license http://www.php.net/license/3_0.txt PHP License 3.0 |
---|
24 | * @version CVS: $Id$ |
---|
25 | * @link http://pear.php.net/package/DB |
---|
26 | */ |
---|
27 | |
---|
28 | /** |
---|
29 | * Obtain the DB_common class so it can be extended from |
---|
30 | */ |
---|
31 | require_once 'DB/common.php'; |
---|
32 | |
---|
33 | /** |
---|
34 | * The methods PEAR DB uses to interact with PHP's sybase extension |
---|
35 | * for interacting with Sybase databases |
---|
36 | * |
---|
37 | * These methods overload the ones declared in DB_common. |
---|
38 | * |
---|
39 | * WARNING: This driver may fail with multiple connections under the |
---|
40 | * same user/pass/host and different databases. |
---|
41 | * |
---|
42 | * @category Database |
---|
43 | * @package DB |
---|
44 | * @author Sterling Hughes <sterling@php.net> |
---|
45 | * @author Antônio Carlos Venâncio Júnior <floripa@php.net> |
---|
46 | * @author Daniel Convissor <danielc@php.net> |
---|
47 | * @copyright 1997-2007 The PHP Group |
---|
48 | * @license http://www.php.net/license/3_0.txt PHP License 3.0 |
---|
49 | * @version Release: 1.7.14RC1 |
---|
50 | * @link http://pear.php.net/package/DB |
---|
51 | */ |
---|
52 | class DB_sybase extends DB_common |
---|
53 | { |
---|
54 | // {{{ properties |
---|
55 | |
---|
56 | /** |
---|
57 | * The DB driver type (mysql, oci8, odbc, etc.) |
---|
58 | * @var string |
---|
59 | */ |
---|
60 | var $phptype = 'sybase'; |
---|
61 | |
---|
62 | /** |
---|
63 | * The database syntax variant to be used (db2, access, etc.), if any |
---|
64 | * @var string |
---|
65 | */ |
---|
66 | var $dbsyntax = 'sybase'; |
---|
67 | |
---|
68 | /** |
---|
69 | * The capabilities of this DB implementation |
---|
70 | * |
---|
71 | * The 'new_link' element contains the PHP version that first provided |
---|
72 | * new_link support for this DBMS. Contains false if it's unsupported. |
---|
73 | * |
---|
74 | * Meaning of the 'limit' element: |
---|
75 | * + 'emulate' = emulate with fetch row by number |
---|
76 | * + 'alter' = alter the query |
---|
77 | * + false = skip rows |
---|
78 | * |
---|
79 | * @var array |
---|
80 | */ |
---|
81 | var $features = array( |
---|
82 | 'limit' => 'emulate', |
---|
83 | 'new_link' => false, |
---|
84 | 'numrows' => true, |
---|
85 | 'pconnect' => true, |
---|
86 | 'prepare' => false, |
---|
87 | 'ssl' => false, |
---|
88 | 'transactions' => true, |
---|
89 | ); |
---|
90 | |
---|
91 | /** |
---|
92 | * A mapping of native error codes to DB error codes |
---|
93 | * @var array |
---|
94 | */ |
---|
95 | var $errorcode_map = array( |
---|
96 | ); |
---|
97 | |
---|
98 | /** |
---|
99 | * The raw database connection created by PHP |
---|
100 | * @var resource |
---|
101 | */ |
---|
102 | var $connection; |
---|
103 | |
---|
104 | /** |
---|
105 | * The DSN information for connecting to a database |
---|
106 | * @var array |
---|
107 | */ |
---|
108 | var $dsn = array(); |
---|
109 | |
---|
110 | |
---|
111 | /** |
---|
112 | * Should data manipulation queries be committed automatically? |
---|
113 | * @var bool |
---|
114 | * @access private |
---|
115 | */ |
---|
116 | var $autocommit = true; |
---|
117 | |
---|
118 | /** |
---|
119 | * The quantity of transactions begun |
---|
120 | * |
---|
121 | * {@internal While this is private, it can't actually be designated |
---|
122 | * private in PHP 5 because it is directly accessed in the test suite.}} |
---|
123 | * |
---|
124 | * @var integer |
---|
125 | * @access private |
---|
126 | */ |
---|
127 | var $transaction_opcount = 0; |
---|
128 | |
---|
129 | /** |
---|
130 | * The database specified in the DSN |
---|
131 | * |
---|
132 | * It's a fix to allow calls to different databases in the same script. |
---|
133 | * |
---|
134 | * @var string |
---|
135 | * @access private |
---|
136 | */ |
---|
137 | var $_db = ''; |
---|
138 | |
---|
139 | |
---|
140 | // }}} |
---|
141 | // {{{ constructor |
---|
142 | |
---|
143 | /** |
---|
144 | * This constructor calls <kbd>$this->DB_common()</kbd> |
---|
145 | * |
---|
146 | * @return void |
---|
147 | */ |
---|
148 | function DB_sybase() |
---|
149 | { |
---|
150 | $this->DB_common(); |
---|
151 | } |
---|
152 | |
---|
153 | // }}} |
---|
154 | // {{{ connect() |
---|
155 | |
---|
156 | /** |
---|
157 | * Connect to the database server, log in and open the database |
---|
158 | * |
---|
159 | * Don't call this method directly. Use DB::connect() instead. |
---|
160 | * |
---|
161 | * PEAR DB's sybase driver supports the following extra DSN options: |
---|
162 | * + appname The application name to use on this connection. |
---|
163 | * Available since PEAR DB 1.7.0. |
---|
164 | * + charset The character set to use on this connection. |
---|
165 | * Available since PEAR DB 1.7.0. |
---|
166 | * |
---|
167 | * @param array $dsn the data source name |
---|
168 | * @param bool $persistent should the connection be persistent? |
---|
169 | * |
---|
170 | * @return int DB_OK on success. A DB_Error object on failure. |
---|
171 | */ |
---|
172 | function connect($dsn, $persistent = false) |
---|
173 | { |
---|
174 | if (!PEAR::loadExtension('sybase') && |
---|
175 | !PEAR::loadExtension('sybase_ct')) |
---|
176 | { |
---|
177 | return $this->raiseError(DB_ERROR_EXTENSION_NOT_FOUND); |
---|
178 | } |
---|
179 | |
---|
180 | $this->dsn = $dsn; |
---|
181 | if ($dsn['dbsyntax']) { |
---|
182 | $this->dbsyntax = $dsn['dbsyntax']; |
---|
183 | } |
---|
184 | |
---|
185 | $dsn['hostspec'] = $dsn['hostspec'] ? $dsn['hostspec'] : 'localhost'; |
---|
186 | $dsn['password'] = !empty($dsn['password']) ? $dsn['password'] : false; |
---|
187 | $dsn['charset'] = isset($dsn['charset']) ? $dsn['charset'] : false; |
---|
188 | $dsn['appname'] = isset($dsn['appname']) ? $dsn['appname'] : false; |
---|
189 | |
---|
190 | $connect_function = $persistent ? 'sybase_pconnect' : 'sybase_connect'; |
---|
191 | |
---|
192 | if ($dsn['username']) { |
---|
193 | $this->connection = @$connect_function($dsn['hostspec'], |
---|
194 | $dsn['username'], |
---|
195 | $dsn['password'], |
---|
196 | $dsn['charset'], |
---|
197 | $dsn['appname']); |
---|
198 | } else { |
---|
199 | return $this->raiseError(DB_ERROR_CONNECT_FAILED, |
---|
200 | null, null, null, |
---|
201 | 'The DSN did not contain a username.'); |
---|
202 | } |
---|
203 | |
---|
204 | if (!$this->connection) { |
---|
205 | return $this->raiseError(DB_ERROR_CONNECT_FAILED, |
---|
206 | null, null, null, |
---|
207 | @sybase_get_last_message()); |
---|
208 | } |
---|
209 | |
---|
210 | if ($dsn['database']) { |
---|
211 | if (!@sybase_select_db($dsn['database'], $this->connection)) { |
---|
212 | return $this->raiseError(DB_ERROR_NODBSELECTED, |
---|
213 | null, null, null, |
---|
214 | @sybase_get_last_message()); |
---|
215 | } |
---|
216 | $this->_db = $dsn['database']; |
---|
217 | } |
---|
218 | |
---|
219 | return DB_OK; |
---|
220 | } |
---|
221 | |
---|
222 | // }}} |
---|
223 | // {{{ disconnect() |
---|
224 | |
---|
225 | /** |
---|
226 | * Disconnects from the database server |
---|
227 | * |
---|
228 | * @return bool TRUE on success, FALSE on failure |
---|
229 | */ |
---|
230 | function disconnect() |
---|
231 | { |
---|
232 | $ret = @sybase_close($this->connection); |
---|
233 | $this->connection = null; |
---|
234 | return $ret; |
---|
235 | } |
---|
236 | |
---|
237 | // }}} |
---|
238 | // {{{ simpleQuery() |
---|
239 | |
---|
240 | /** |
---|
241 | * Sends a query to the database server |
---|
242 | * |
---|
243 | * @param string the SQL query string |
---|
244 | * |
---|
245 | * @return mixed + a PHP result resrouce for successful SELECT queries |
---|
246 | * + the DB_OK constant for other successful queries |
---|
247 | * + a DB_Error object on failure |
---|
248 | */ |
---|
249 | function simpleQuery($query) |
---|
250 | { |
---|
251 | $ismanip = $this->_checkManip($query); |
---|
252 | $this->last_query = $query; |
---|
253 | if ($this->_db && !@sybase_select_db($this->_db, $this->connection)) { |
---|
254 | return $this->sybaseRaiseError(DB_ERROR_NODBSELECTED); |
---|
255 | } |
---|
256 | $query = $this->modifyQuery($query); |
---|
257 | if (!$this->autocommit && $ismanip) { |
---|
258 | if ($this->transaction_opcount == 0) { |
---|
259 | $result = @sybase_query('BEGIN TRANSACTION', $this->connection); |
---|
260 | if (!$result) { |
---|
261 | return $this->sybaseRaiseError(); |
---|
262 | } |
---|
263 | } |
---|
264 | $this->transaction_opcount++; |
---|
265 | } |
---|
266 | $result = @sybase_query($query, $this->connection); |
---|
267 | if (!$result) { |
---|
268 | return $this->sybaseRaiseError(); |
---|
269 | } |
---|
270 | if (is_resource($result)) { |
---|
271 | return $result; |
---|
272 | } |
---|
273 | // Determine which queries that should return data, and which |
---|
274 | // should return an error code only. |
---|
275 | return $ismanip ? DB_OK : $result; |
---|
276 | } |
---|
277 | |
---|
278 | // }}} |
---|
279 | // {{{ nextResult() |
---|
280 | |
---|
281 | /** |
---|
282 | * Move the internal sybase result pointer to the next available result |
---|
283 | * |
---|
284 | * @param a valid sybase result resource |
---|
285 | * |
---|
286 | * @access public |
---|
287 | * |
---|
288 | * @return true if a result is available otherwise return false |
---|
289 | */ |
---|
290 | function nextResult($result) |
---|
291 | { |
---|
292 | return false; |
---|
293 | } |
---|
294 | |
---|
295 | // }}} |
---|
296 | // {{{ fetchInto() |
---|
297 | |
---|
298 | /** |
---|
299 | * Places a row from the result set into the given array |
---|
300 | * |
---|
301 | * Formating of the array and the data therein are configurable. |
---|
302 | * See DB_result::fetchInto() for more information. |
---|
303 | * |
---|
304 | * This method is not meant to be called directly. Use |
---|
305 | * DB_result::fetchInto() instead. It can't be declared "protected" |
---|
306 | * because DB_result is a separate object. |
---|
307 | * |
---|
308 | * @param resource $result the query result resource |
---|
309 | * @param array $arr the referenced array to put the data in |
---|
310 | * @param int $fetchmode how the resulting array should be indexed |
---|
311 | * @param int $rownum the row number to fetch (0 = first row) |
---|
312 | * |
---|
313 | * @return mixed DB_OK on success, NULL when the end of a result set is |
---|
314 | * reached or on failure |
---|
315 | * |
---|
316 | * @see DB_result::fetchInto() |
---|
317 | */ |
---|
318 | function fetchInto($result, &$arr, $fetchmode, $rownum = null) |
---|
319 | { |
---|
320 | if ($rownum !== null) { |
---|
321 | if (!@sybase_data_seek($result, $rownum)) { |
---|
322 | return null; |
---|
323 | } |
---|
324 | } |
---|
325 | if ($fetchmode & DB_FETCHMODE_ASSOC) { |
---|
326 | if (function_exists('sybase_fetch_assoc')) { |
---|
327 | $arr = @sybase_fetch_assoc($result); |
---|
328 | } else { |
---|
329 | if ($arr = @sybase_fetch_array($result)) { |
---|
330 | foreach ($arr as $key => $value) { |
---|
331 | if (is_int($key)) { |
---|
332 | unset($arr[$key]); |
---|
333 | } |
---|
334 | } |
---|
335 | } |
---|
336 | } |
---|
337 | if ($this->options['portability'] & DB_PORTABILITY_LOWERCASE && $arr) { |
---|
338 | $arr = array_change_key_case($arr, CASE_LOWER); |
---|
339 | } |
---|
340 | } else { |
---|
341 | $arr = @sybase_fetch_row($result); |
---|
342 | } |
---|
343 | if (!$arr) { |
---|
344 | return null; |
---|
345 | } |
---|
346 | if ($this->options['portability'] & DB_PORTABILITY_RTRIM) { |
---|
347 | $this->_rtrimArrayValues($arr); |
---|
348 | } |
---|
349 | if ($this->options['portability'] & DB_PORTABILITY_NULL_TO_EMPTY) { |
---|
350 | $this->_convertNullArrayValuesToEmpty($arr); |
---|
351 | } |
---|
352 | return DB_OK; |
---|
353 | } |
---|
354 | |
---|
355 | // }}} |
---|
356 | // {{{ freeResult() |
---|
357 | |
---|
358 | /** |
---|
359 | * Deletes the result set and frees the memory occupied by the result set |
---|
360 | * |
---|
361 | * This method is not meant to be called directly. Use |
---|
362 | * DB_result::free() instead. It can't be declared "protected" |
---|
363 | * because DB_result is a separate object. |
---|
364 | * |
---|
365 | * @param resource $result PHP's query result resource |
---|
366 | * |
---|
367 | * @return bool TRUE on success, FALSE if $result is invalid |
---|
368 | * |
---|
369 | * @see DB_result::free() |
---|
370 | */ |
---|
371 | function freeResult($result) |
---|
372 | { |
---|
373 | return is_resource($result) ? sybase_free_result($result) : false; |
---|
374 | } |
---|
375 | |
---|
376 | // }}} |
---|
377 | // {{{ numCols() |
---|
378 | |
---|
379 | /** |
---|
380 | * Gets the number of columns in a result set |
---|
381 | * |
---|
382 | * This method is not meant to be called directly. Use |
---|
383 | * DB_result::numCols() instead. It can't be declared "protected" |
---|
384 | * because DB_result is a separate object. |
---|
385 | * |
---|
386 | * @param resource $result PHP's query result resource |
---|
387 | * |
---|
388 | * @return int the number of columns. A DB_Error object on failure. |
---|
389 | * |
---|
390 | * @see DB_result::numCols() |
---|
391 | */ |
---|
392 | function numCols($result) |
---|
393 | { |
---|
394 | $cols = @sybase_num_fields($result); |
---|
395 | if (!$cols) { |
---|
396 | return $this->sybaseRaiseError(); |
---|
397 | } |
---|
398 | return $cols; |
---|
399 | } |
---|
400 | |
---|
401 | // }}} |
---|
402 | // {{{ numRows() |
---|
403 | |
---|
404 | /** |
---|
405 | * Gets the number of rows in a result set |
---|
406 | * |
---|
407 | * This method is not meant to be called directly. Use |
---|
408 | * DB_result::numRows() instead. It can't be declared "protected" |
---|
409 | * because DB_result is a separate object. |
---|
410 | * |
---|
411 | * @param resource $result PHP's query result resource |
---|
412 | * |
---|
413 | * @return int the number of rows. A DB_Error object on failure. |
---|
414 | * |
---|
415 | * @see DB_result::numRows() |
---|
416 | */ |
---|
417 | function numRows($result) |
---|
418 | { |
---|
419 | $rows = @sybase_num_rows($result); |
---|
420 | if ($rows === false) { |
---|
421 | return $this->sybaseRaiseError(); |
---|
422 | } |
---|
423 | return $rows; |
---|
424 | } |
---|
425 | |
---|
426 | // }}} |
---|
427 | // {{{ affectedRows() |
---|
428 | |
---|
429 | /** |
---|
430 | * Determines the number of rows affected by a data maniuplation query |
---|
431 | * |
---|
432 | * 0 is returned for queries that don't manipulate data. |
---|
433 | * |
---|
434 | * @return int the number of rows. A DB_Error object on failure. |
---|
435 | */ |
---|
436 | function affectedRows() |
---|
437 | { |
---|
438 | if ($this->_last_query_manip) { |
---|
439 | $result = @sybase_affected_rows($this->connection); |
---|
440 | } else { |
---|
441 | $result = 0; |
---|
442 | } |
---|
443 | return $result; |
---|
444 | } |
---|
445 | |
---|
446 | // }}} |
---|
447 | // {{{ nextId() |
---|
448 | |
---|
449 | /** |
---|
450 | * Returns the next free id in a sequence |
---|
451 | * |
---|
452 | * @param string $seq_name name of the sequence |
---|
453 | * @param boolean $ondemand when true, the seqence is automatically |
---|
454 | * created if it does not exist |
---|
455 | * |
---|
456 | * @return int the next id number in the sequence. |
---|
457 | * A DB_Error object on failure. |
---|
458 | * |
---|
459 | * @see DB_common::nextID(), DB_common::getSequenceName(), |
---|
460 | * DB_sybase::createSequence(), DB_sybase::dropSequence() |
---|
461 | */ |
---|
462 | function nextId($seq_name, $ondemand = true) |
---|
463 | { |
---|
464 | $seqname = $this->getSequenceName($seq_name); |
---|
465 | if ($this->_db && !@sybase_select_db($this->_db, $this->connection)) { |
---|
466 | return $this->sybaseRaiseError(DB_ERROR_NODBSELECTED); |
---|
467 | } |
---|
468 | $repeat = 0; |
---|
469 | do { |
---|
470 | $this->pushErrorHandling(PEAR_ERROR_RETURN); |
---|
471 | $result = $this->query("INSERT INTO $seqname (vapor) VALUES (0)"); |
---|
472 | $this->popErrorHandling(); |
---|
473 | if ($ondemand && DB::isError($result) && |
---|
474 | ($result->getCode() == DB_ERROR || $result->getCode() == DB_ERROR_NOSUCHTABLE)) |
---|
475 | { |
---|
476 | $repeat = 1; |
---|
477 | $result = $this->createSequence($seq_name); |
---|
478 | if (DB::isError($result)) { |
---|
479 | return $this->raiseError($result); |
---|
480 | } |
---|
481 | } elseif (!DB::isError($result)) { |
---|
482 | $result = $this->query("SELECT @@IDENTITY FROM $seqname"); |
---|
483 | $repeat = 0; |
---|
484 | } else { |
---|
485 | $repeat = false; |
---|
486 | } |
---|
487 | } while ($repeat); |
---|
488 | if (DB::isError($result)) { |
---|
489 | return $this->raiseError($result); |
---|
490 | } |
---|
491 | $result = $result->fetchRow(DB_FETCHMODE_ORDERED); |
---|
492 | return $result[0]; |
---|
493 | } |
---|
494 | |
---|
495 | /** |
---|
496 | * Creates a new sequence |
---|
497 | * |
---|
498 | * @param string $seq_name name of the new sequence |
---|
499 | * |
---|
500 | * @return int DB_OK on success. A DB_Error object on failure. |
---|
501 | * |
---|
502 | * @see DB_common::createSequence(), DB_common::getSequenceName(), |
---|
503 | * DB_sybase::nextID(), DB_sybase::dropSequence() |
---|
504 | */ |
---|
505 | function createSequence($seq_name) |
---|
506 | { |
---|
507 | return $this->query('CREATE TABLE ' |
---|
508 | . $this->getSequenceName($seq_name) |
---|
509 | . ' (id numeric(10, 0) IDENTITY NOT NULL,' |
---|
510 | . ' vapor int NULL)'); |
---|
511 | } |
---|
512 | |
---|
513 | // }}} |
---|
514 | // {{{ dropSequence() |
---|
515 | |
---|
516 | /** |
---|
517 | * Deletes a sequence |
---|
518 | * |
---|
519 | * @param string $seq_name name of the sequence to be deleted |
---|
520 | * |
---|
521 | * @return int DB_OK on success. A DB_Error object on failure. |
---|
522 | * |
---|
523 | * @see DB_common::dropSequence(), DB_common::getSequenceName(), |
---|
524 | * DB_sybase::nextID(), DB_sybase::createSequence() |
---|
525 | */ |
---|
526 | function dropSequence($seq_name) |
---|
527 | { |
---|
528 | return $this->query('DROP TABLE ' . $this->getSequenceName($seq_name)); |
---|
529 | } |
---|
530 | |
---|
531 | // }}} |
---|
532 | // {{{ quoteFloat() |
---|
533 | |
---|
534 | /** |
---|
535 | * Formats a float value for use within a query in a locale-independent |
---|
536 | * manner. |
---|
537 | * |
---|
538 | * @param float the float value to be quoted. |
---|
539 | * @return string the quoted string. |
---|
540 | * @see DB_common::quoteSmart() |
---|
541 | * @since Method available since release 1.7.8. |
---|
542 | */ |
---|
543 | function quoteFloat($float) { |
---|
544 | return $this->escapeSimple(str_replace(',', '.', strval(floatval($float)))); |
---|
545 | } |
---|
546 | |
---|
547 | // }}} |
---|
548 | // {{{ autoCommit() |
---|
549 | |
---|
550 | /** |
---|
551 | * Enables or disables automatic commits |
---|
552 | * |
---|
553 | * @param bool $onoff true turns it on, false turns it off |
---|
554 | * |
---|
555 | * @return int DB_OK on success. A DB_Error object if the driver |
---|
556 | * doesn't support auto-committing transactions. |
---|
557 | */ |
---|
558 | function autoCommit($onoff = false) |
---|
559 | { |
---|
560 | // XXX if $this->transaction_opcount > 0, we should probably |
---|
561 | // issue a warning here. |
---|
562 | $this->autocommit = $onoff ? true : false; |
---|
563 | return DB_OK; |
---|
564 | } |
---|
565 | |
---|
566 | // }}} |
---|
567 | // {{{ commit() |
---|
568 | |
---|
569 | /** |
---|
570 | * Commits the current transaction |
---|
571 | * |
---|
572 | * @return int DB_OK on success. A DB_Error object on failure. |
---|
573 | */ |
---|
574 | function commit() |
---|
575 | { |
---|
576 | if ($this->transaction_opcount > 0) { |
---|
577 | if ($this->_db && !@sybase_select_db($this->_db, $this->connection)) { |
---|
578 | return $this->sybaseRaiseError(DB_ERROR_NODBSELECTED); |
---|
579 | } |
---|
580 | $result = @sybase_query('COMMIT', $this->connection); |
---|
581 | $this->transaction_opcount = 0; |
---|
582 | if (!$result) { |
---|
583 | return $this->sybaseRaiseError(); |
---|
584 | } |
---|
585 | } |
---|
586 | return DB_OK; |
---|
587 | } |
---|
588 | |
---|
589 | // }}} |
---|
590 | // {{{ rollback() |
---|
591 | |
---|
592 | /** |
---|
593 | * Reverts the current transaction |
---|
594 | * |
---|
595 | * @return int DB_OK on success. A DB_Error object on failure. |
---|
596 | */ |
---|
597 | function rollback() |
---|
598 | { |
---|
599 | if ($this->transaction_opcount > 0) { |
---|
600 | if ($this->_db && !@sybase_select_db($this->_db, $this->connection)) { |
---|
601 | return $this->sybaseRaiseError(DB_ERROR_NODBSELECTED); |
---|
602 | } |
---|
603 | $result = @sybase_query('ROLLBACK', $this->connection); |
---|
604 | $this->transaction_opcount = 0; |
---|
605 | if (!$result) { |
---|
606 | return $this->sybaseRaiseError(); |
---|
607 | } |
---|
608 | } |
---|
609 | return DB_OK; |
---|
610 | } |
---|
611 | |
---|
612 | // }}} |
---|
613 | // {{{ sybaseRaiseError() |
---|
614 | |
---|
615 | /** |
---|
616 | * Produces a DB_Error object regarding the current problem |
---|
617 | * |
---|
618 | * @param int $errno if the error is being manually raised pass a |
---|
619 | * DB_ERROR* constant here. If this isn't passed |
---|
620 | * the error information gathered from the DBMS. |
---|
621 | * |
---|
622 | * @return object the DB_Error object |
---|
623 | * |
---|
624 | * @see DB_common::raiseError(), |
---|
625 | * DB_sybase::errorNative(), DB_sybase::errorCode() |
---|
626 | */ |
---|
627 | function sybaseRaiseError($errno = null) |
---|
628 | { |
---|
629 | $native = $this->errorNative(); |
---|
630 | if ($errno === null) { |
---|
631 | $errno = $this->errorCode($native); |
---|
632 | } |
---|
633 | return $this->raiseError($errno, null, null, null, $native); |
---|
634 | } |
---|
635 | |
---|
636 | // }}} |
---|
637 | // {{{ errorNative() |
---|
638 | |
---|
639 | /** |
---|
640 | * Gets the DBMS' native error message produced by the last query |
---|
641 | * |
---|
642 | * @return string the DBMS' error message |
---|
643 | */ |
---|
644 | function errorNative() |
---|
645 | { |
---|
646 | return @sybase_get_last_message(); |
---|
647 | } |
---|
648 | |
---|
649 | // }}} |
---|
650 | // {{{ errorCode() |
---|
651 | |
---|
652 | /** |
---|
653 | * Determines PEAR::DB error code from the database's text error message. |
---|
654 | * |
---|
655 | * @param string $errormsg error message returned from the database |
---|
656 | * @return integer an error number from a DB error constant |
---|
657 | */ |
---|
658 | function errorCode($errormsg) |
---|
659 | { |
---|
660 | static $error_regexps; |
---|
661 | |
---|
662 | // PHP 5.2+ prepends the function name to $php_errormsg, so we need |
---|
663 | // this hack to work around it, per bug #9599. |
---|
664 | $errormsg = preg_replace('/^sybase[a-z_]+\(\): /', '', $errormsg); |
---|
665 | |
---|
666 | if (!isset($error_regexps)) { |
---|
667 | $error_regexps = array( |
---|
668 | '/Incorrect syntax near/' |
---|
669 | => DB_ERROR_SYNTAX, |
---|
670 | '/^Unclosed quote before the character string [\"\'].*[\"\']\./' |
---|
671 | => DB_ERROR_SYNTAX, |
---|
672 | '/Implicit conversion (from datatype|of NUMERIC value)/i' |
---|
673 | => DB_ERROR_INVALID_NUMBER, |
---|
674 | '/Cannot drop the table [\"\'].+[\"\'], because it doesn\'t exist in the system catalogs\./' |
---|
675 | => DB_ERROR_NOSUCHTABLE, |
---|
676 | '/Only the owner of object [\"\'].+[\"\'] or a user with System Administrator \(SA\) role can run this command\./' |
---|
677 | => DB_ERROR_ACCESS_VIOLATION, |
---|
678 | '/^.+ permission denied on object .+, database .+, owner .+/' |
---|
679 | => DB_ERROR_ACCESS_VIOLATION, |
---|
680 | '/^.* permission denied, database .+, owner .+/' |
---|
681 | => DB_ERROR_ACCESS_VIOLATION, |
---|
682 | '/[^.*] not found\./' |
---|
683 | => DB_ERROR_NOSUCHTABLE, |
---|
684 | '/There is already an object named/' |
---|
685 | => DB_ERROR_ALREADY_EXISTS, |
---|
686 | '/Invalid column name/' |
---|
687 | => DB_ERROR_NOSUCHFIELD, |
---|
688 | '/does not allow null values/' |
---|
689 | => DB_ERROR_CONSTRAINT_NOT_NULL, |
---|
690 | '/Command has been aborted/' |
---|
691 | => DB_ERROR_CONSTRAINT, |
---|
692 | '/^Cannot drop the index .* because it doesn\'t exist/i' |
---|
693 | => DB_ERROR_NOT_FOUND, |
---|
694 | '/^There is already an index/i' |
---|
695 | => DB_ERROR_ALREADY_EXISTS, |
---|
696 | '/^There are fewer columns in the INSERT statement than values specified/i' |
---|
697 | => DB_ERROR_VALUE_COUNT_ON_ROW, |
---|
698 | '/Divide by zero/i' |
---|
699 | => DB_ERROR_DIVZERO, |
---|
700 | ); |
---|
701 | } |
---|
702 | |
---|
703 | foreach ($error_regexps as $regexp => $code) { |
---|
704 | if (preg_match($regexp, $errormsg)) { |
---|
705 | return $code; |
---|
706 | } |
---|
707 | } |
---|
708 | return DB_ERROR; |
---|
709 | } |
---|
710 | |
---|
711 | // }}} |
---|
712 | // {{{ tableInfo() |
---|
713 | |
---|
714 | /** |
---|
715 | * Returns information about a table or a result set |
---|
716 | * |
---|
717 | * NOTE: only supports 'table' and 'flags' if <var>$result</var> |
---|
718 | * is a table name. |
---|
719 | * |
---|
720 | * @param object|string $result DB_result object from a query or a |
---|
721 | * string containing the name of a table. |
---|
722 | * While this also accepts a query result |
---|
723 | * resource identifier, this behavior is |
---|
724 | * deprecated. |
---|
725 | * @param int $mode a valid tableInfo mode |
---|
726 | * |
---|
727 | * @return array an associative array with the information requested. |
---|
728 | * A DB_Error object on failure. |
---|
729 | * |
---|
730 | * @see DB_common::tableInfo() |
---|
731 | * @since Method available since Release 1.6.0 |
---|
732 | */ |
---|
733 | function tableInfo($result, $mode = null) |
---|
734 | { |
---|
735 | if (is_string($result)) { |
---|
736 | /* |
---|
737 | * Probably received a table name. |
---|
738 | * Create a result resource identifier. |
---|
739 | */ |
---|
740 | if ($this->_db && !@sybase_select_db($this->_db, $this->connection)) { |
---|
741 | return $this->sybaseRaiseError(DB_ERROR_NODBSELECTED); |
---|
742 | } |
---|
743 | $id = @sybase_query("SELECT * FROM $result WHERE 1=0", |
---|
744 | $this->connection); |
---|
745 | $got_string = true; |
---|
746 | } elseif (isset($result->result)) { |
---|
747 | /* |
---|
748 | * Probably received a result object. |
---|
749 | * Extract the result resource identifier. |
---|
750 | */ |
---|
751 | $id = $result->result; |
---|
752 | $got_string = false; |
---|
753 | } else { |
---|
754 | /* |
---|
755 | * Probably received a result resource identifier. |
---|
756 | * Copy it. |
---|
757 | * Deprecated. Here for compatibility only. |
---|
758 | */ |
---|
759 | $id = $result; |
---|
760 | $got_string = false; |
---|
761 | } |
---|
762 | |
---|
763 | if (!is_resource($id)) { |
---|
764 | return $this->sybaseRaiseError(DB_ERROR_NEED_MORE_DATA); |
---|
765 | } |
---|
766 | |
---|
767 | if ($this->options['portability'] & DB_PORTABILITY_LOWERCASE) { |
---|
768 | $case_func = 'strtolower'; |
---|
769 | } else { |
---|
770 | $case_func = 'strval'; |
---|
771 | } |
---|
772 | |
---|
773 | $count = @sybase_num_fields($id); |
---|
774 | $res = array(); |
---|
775 | |
---|
776 | if ($mode) { |
---|
777 | $res['num_fields'] = $count; |
---|
778 | } |
---|
779 | |
---|
780 | for ($i = 0; $i < $count; $i++) { |
---|
781 | $f = @sybase_fetch_field($id, $i); |
---|
782 | // column_source is often blank |
---|
783 | $res[$i] = array( |
---|
784 | 'table' => $got_string |
---|
785 | ? $case_func($result) |
---|
786 | : $case_func($f->column_source), |
---|
787 | 'name' => $case_func($f->name), |
---|
788 | 'type' => $f->type, |
---|
789 | 'len' => $f->max_length, |
---|
790 | 'flags' => '', |
---|
791 | ); |
---|
792 | if ($res[$i]['table']) { |
---|
793 | $res[$i]['flags'] = $this->_sybase_field_flags( |
---|
794 | $res[$i]['table'], $res[$i]['name']); |
---|
795 | } |
---|
796 | if ($mode & DB_TABLEINFO_ORDER) { |
---|
797 | $res['order'][$res[$i]['name']] = $i; |
---|
798 | } |
---|
799 | if ($mode & DB_TABLEINFO_ORDERTABLE) { |
---|
800 | $res['ordertable'][$res[$i]['table']][$res[$i]['name']] = $i; |
---|
801 | } |
---|
802 | } |
---|
803 | |
---|
804 | // free the result only if we were called on a table |
---|
805 | if ($got_string) { |
---|
806 | @sybase_free_result($id); |
---|
807 | } |
---|
808 | return $res; |
---|
809 | } |
---|
810 | |
---|
811 | // }}} |
---|
812 | // {{{ _sybase_field_flags() |
---|
813 | |
---|
814 | /** |
---|
815 | * Get the flags for a field |
---|
816 | * |
---|
817 | * Currently supports: |
---|
818 | * + <samp>unique_key</samp> (unique index, unique check or primary_key) |
---|
819 | * + <samp>multiple_key</samp> (multi-key index) |
---|
820 | * |
---|
821 | * @param string $table the table name |
---|
822 | * @param string $column the field name |
---|
823 | * |
---|
824 | * @return string space delimited string of flags. Empty string if none. |
---|
825 | * |
---|
826 | * @access private |
---|
827 | */ |
---|
828 | function _sybase_field_flags($table, $column) |
---|
829 | { |
---|
830 | static $tableName = null; |
---|
831 | static $flags = array(); |
---|
832 | |
---|
833 | if ($table != $tableName) { |
---|
834 | $flags = array(); |
---|
835 | $tableName = $table; |
---|
836 | |
---|
837 | /* We're running sp_helpindex directly because it doesn't exist in |
---|
838 | * older versions of ASE -- unfortunately, we can't just use |
---|
839 | * DB::isError() because the user may be using callback error |
---|
840 | * handling. */ |
---|
841 | $res = @sybase_query("sp_helpindex $table", $this->connection); |
---|
842 | |
---|
843 | if ($res === false || $res === true) { |
---|
844 | // Fake a valid response for BC reasons. |
---|
845 | return ''; |
---|
846 | } |
---|
847 | |
---|
848 | while (($val = sybase_fetch_assoc($res)) !== false) { |
---|
849 | if (!isset($val['index_keys'])) { |
---|
850 | /* No useful information returned. Break and be done with |
---|
851 | * it, which preserves the pre-1.7.9 behaviour. */ |
---|
852 | break; |
---|
853 | } |
---|
854 | |
---|
855 | $keys = explode(', ', trim($val['index_keys'])); |
---|
856 | |
---|
857 | if (sizeof($keys) > 1) { |
---|
858 | foreach ($keys as $key) { |
---|
859 | $this->_add_flag($flags[$key], 'multiple_key'); |
---|
860 | } |
---|
861 | } |
---|
862 | |
---|
863 | if (strpos($val['index_description'], 'unique')) { |
---|
864 | foreach ($keys as $key) { |
---|
865 | $this->_add_flag($flags[$key], 'unique_key'); |
---|
866 | } |
---|
867 | } |
---|
868 | } |
---|
869 | |
---|
870 | sybase_free_result($res); |
---|
871 | |
---|
872 | } |
---|
873 | |
---|
874 | if (array_key_exists($column, $flags)) { |
---|
875 | return(implode(' ', $flags[$column])); |
---|
876 | } |
---|
877 | |
---|
878 | return ''; |
---|
879 | } |
---|
880 | |
---|
881 | // }}} |
---|
882 | // {{{ _add_flag() |
---|
883 | |
---|
884 | /** |
---|
885 | * Adds a string to the flags array if the flag is not yet in there |
---|
886 | * - if there is no flag present the array is created |
---|
887 | * |
---|
888 | * @param array $array reference of flags array to add a value to |
---|
889 | * @param mixed $value value to add to the flag array |
---|
890 | * |
---|
891 | * @return void |
---|
892 | * |
---|
893 | * @access private |
---|
894 | */ |
---|
895 | function _add_flag(&$array, $value) |
---|
896 | { |
---|
897 | if (!is_array($array)) { |
---|
898 | $array = array($value); |
---|
899 | } elseif (!in_array($value, $array)) { |
---|
900 | array_push($array, $value); |
---|
901 | } |
---|
902 | } |
---|
903 | |
---|
904 | // }}} |
---|
905 | // {{{ getSpecialQuery() |
---|
906 | |
---|
907 | /** |
---|
908 | * Obtains the query string needed for listing a given type of objects |
---|
909 | * |
---|
910 | * @param string $type the kind of objects you want to retrieve |
---|
911 | * |
---|
912 | * @return string the SQL query string or null if the driver doesn't |
---|
913 | * support the object type requested |
---|
914 | * |
---|
915 | * @access protected |
---|
916 | * @see DB_common::getListOf() |
---|
917 | */ |
---|
918 | function getSpecialQuery($type) |
---|
919 | { |
---|
920 | switch ($type) { |
---|
921 | case 'tables': |
---|
922 | return "SELECT name FROM sysobjects WHERE type = 'U'" |
---|
923 | . ' ORDER BY name'; |
---|
924 | case 'views': |
---|
925 | return "SELECT name FROM sysobjects WHERE type = 'V'"; |
---|
926 | default: |
---|
927 | return null; |
---|
928 | } |
---|
929 | } |
---|
930 | |
---|
931 | // }}} |
---|
932 | |
---|
933 | } |
---|
934 | |
---|
935 | /* |
---|
936 | * Local variables: |
---|
937 | * tab-width: 4 |
---|
938 | * c-basic-offset: 4 |
---|
939 | * End: |
---|
940 | */ |
---|
941 | |
---|
942 | ?> |
---|