Редакция 2 | Содержимое файла | Сравнить с предыдущей | Последнее изменение | Открыть журнал | RSS
Редакция | Автор | № строки | Строка |
---|---|---|---|
2 | alex-w | 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 Antnio Carlos Venncio Jnior <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: sybase.php,v 1.87 2007/09/21 13:40:42 aharvey Exp $ |
||
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 Antnio Carlos Venncio Jnior <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: 1.7.13 |
||
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 | ?> |