2 rcs_id('$Id: ADODB.php,v 1.75 2005-09-10 21:30:16 rurban Exp $');
5 Copyright 2002,2004 $ThePhpWikiProgrammingTeam
7 This file is part of PhpWiki.
9 PhpWiki is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 2 of the License, or
12 (at your option) any later version.
14 PhpWiki is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with PhpWiki; if not, write to the Free Software
21 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
26 * Based on PearDB.php.
27 * @author: Lawrence Akka, Reini Urban
29 * Now (phpwiki-1.3.10) with adodb-4.22, by Reini Urban:
30 * 1) Extended to use all available database backends, not only mysql.
31 * 2) It uses the ultra-fast binary adodb extension if loaded.
32 * 3) We use FETCH_NUM instead of FETCH_ASSOC (faster and more generic)
33 * 4) To support generic iterators which return ASSOC fields, and to support queries with
34 * variable columns, some trickery was needed to use recordset specific fetchMode.
35 * The first Execute uses the global fetchMode (ASSOC), then it's resetted back to NUM
36 * and the recordset fetchmode is set to ASSOC.
37 * 5) Transaction support, and locking as fallback.
38 * 6) 2004-12-10 added extra page.cached_html
40 * phpwiki-1.3.11, by Philippe Vanhaesendonck
41 * - pass column list to iterators so we can FETCH_NUM in all cases
43 * ADODB basic differences to PearDB: It pre-fetches the first row into fields,
44 * is dirtier in style, layout and more low-level ("worse is better").
45 * It has less needed basic features (modifyQuery, locks, ...), but some more
46 * unneeded features included: paging, monitoring and sessions, and much more drivers.
47 * No locking (which PearDB supports in some backends), and sequences are very
48 * bad compared to PearDB.
50 * Old Comments, by Lawrence Akka:
51 * 1) ADODB's GetRow() is slightly different from that in PEAR. It does not
52 * accept a fetchmode parameter
53 * That doesn't matter too much here, since we only ever use FETCHMODE_ASSOC
54 * 2) No need for ''s around strings in sprintf arguments - qstr puts them
56 * 3) ADODB has a version of GetOne, but it is difficult to use it when
57 * FETCH_ASSOC is in effect.
58 * Instead, use $rs = Execute($query); $value = $rs->fields["$colname"]
59 * 4) No error handling yet - could use ADOConnection->raiseErrorFn
60 * 5) It used to be faster then PEAR/DB at the beginning of 2002.
61 * Now at August 2002 PEAR/DB with our own page cache added,
62 * performance is comparable.
65 require_once('lib/WikiDB/backend.php');
66 // Error handling - calls trigger_error. NB - does not close the connection. Does it need to?
67 include_once('lib/WikiDB/adodb/adodb-errorhandler.inc.php');
68 // include the main adodb file
69 require_once('lib/WikiDB/adodb/adodb.inc.php');
71 class WikiDB_backend_ADODB
72 extends WikiDB_backend
75 function WikiDB_backend_ADODB ($dbparams) {
76 $parsed = parseDSN($dbparams['dsn']);
77 $this->_dbparams = $dbparams;
78 $this->_parsedDSN =& $parsed;
79 $this->_dbh = &ADONewConnection($parsed['phptype']);
80 if (DEBUG & _DEBUG_SQL) {
81 $this->_dbh->debug = true;
82 $GLOBALS['ADODB_OUTP'] = '_sql_debuglog';
84 $this->_dsn = $parsed;
85 // persistent is defined as DSN option, or with a config value.
86 // phptype://username:password@hostspec/database?persistent=false
87 if (!empty($parsed['persistent']) or DATABASE_PERSISTENT)
88 $conn = $this->_dbh->PConnect($parsed['hostspec'],$parsed['username'],
89 $parsed['password'], $parsed['database']);
91 $conn = $this->_dbh->Connect($parsed['hostspec'],$parsed['username'],
92 $parsed['password'], $parsed['database']);
94 // Since 1.3.10 we use the faster ADODB_FETCH_NUM,
95 // with some ASSOC based recordsets.
96 $GLOBALS['ADODB_FETCH_MODE'] = ADODB_FETCH_NUM;
97 $this->_dbh->SetFetchMode(ADODB_FETCH_NUM);
98 $GLOBALS['ADODB_COUNTRECS'] = false;
100 $prefix = isset($dbparams['prefix']) ? $dbparams['prefix'] : '';
102 = array('page_tbl' => $prefix . 'page',
103 'version_tbl' => $prefix . 'version',
104 'link_tbl' => $prefix . 'link',
105 'recent_tbl' => $prefix . 'recent',
106 'nonempty_tbl' => $prefix . 'nonempty');
107 $page_tbl = $this->_table_names['page_tbl'];
108 $version_tbl = $this->_table_names['version_tbl'];
109 $this->page_tbl_fields = "$page_tbl.id AS id, $page_tbl.pagename AS pagename, "
110 . "$page_tbl.hits hits";
111 $this->page_tbl_field_list = array('id', 'pagename', 'hits');
112 $this->version_tbl_fields = "$version_tbl.version AS version, "
113 . "$version_tbl.mtime AS mtime, "
114 . "$version_tbl.minor_edit AS minor_edit, $version_tbl.content AS content, "
115 . "$version_tbl.versiondata AS versiondata";
116 $this->version_tbl_field_list = array('version', 'mtime', 'minor_edit', 'content',
120 = array('maxmajor' => "MAX(CASE WHEN minor_edit=0 THEN version END)",
121 'maxminor' => "MAX(CASE WHEN minor_edit<>0 THEN version END)",
122 'maxversion' => "MAX(version)",
123 'notempty' => "<>''",
124 'iscontent' => "$version_tbl.content<>''");
125 $this->_lock_count = 0;
129 * Close database connection.
134 if ($this->_lock_count) {
135 trigger_error("WARNING: database still locked " .
136 '(lock_count = $this->_lock_count)' . "\n<br />",
139 // $this->_dbh->setErrorHandling(PEAR_ERROR_PRINT); // prevent recursive loops.
140 $this->unlock(false,'force');
142 $this->_dbh->close();
147 * Fast test for wikipage.
149 function is_wiki_page($pagename) {
151 extract($this->_table_names);
152 $row = $dbh->GetRow(sprintf("SELECT $page_tbl.id AS id"
153 . " FROM $nonempty_tbl, $page_tbl"
154 . " WHERE $nonempty_tbl.id=$page_tbl.id"
155 . " AND pagename=%s",
156 $dbh->qstr($pagename)));
157 return $row ? $row[0] : false;
160 function get_all_pagenames() {
162 extract($this->_table_names);
163 $result = $dbh->Execute("SELECT pagename"
164 . " FROM $nonempty_tbl, $page_tbl"
165 . " WHERE $nonempty_tbl.id=$page_tbl.id");
166 return $result->GetArray();
169 function numPages($filter=false, $exclude='') {
171 extract($this->_table_names);
172 $result = $dbh->getRow("SELECT count(*)"
173 . " FROM $nonempty_tbl, $page_tbl"
174 . " WHERE $nonempty_tbl.id=$page_tbl.id");
178 function increaseHitCount($pagename) {
180 // Hits is the only thing we can update in a fast manner.
181 // Note that this will fail silently if the page does not
182 // have a record in the page table. Since it's just the
183 // hit count, who cares?
184 $dbh->Execute(sprintf("UPDATE %s SET hits=hits+1 WHERE pagename=%s LIMIT 1",
185 $this->_table_names['page_tbl'],
186 $dbh->qstr($pagename)));
191 * Read page information from database.
193 function get_pagedata($pagename) {
195 $row = $dbh->GetRow(sprintf("SELECT id,pagename,hits,pagedata FROM %s WHERE pagename=%s",
196 $this->_table_names['page_tbl'],
197 $dbh->qstr($pagename)));
198 return $row ? $this->_extract_page_data($row[3], $row[2]) : false;
201 function _extract_page_data($data, $hits) {
203 return array('hits' => $hits);
205 return array_merge(array('hits' => $hits), $this->_unserialize($data));
208 function update_pagedata($pagename, $newdata) {
210 $page_tbl = $this->_table_names['page_tbl'];
212 // Hits is the only thing we can update in a fast manner.
213 if (count($newdata) == 1 && isset($newdata['hits'])) {
214 // Note that this will fail silently if the page does not
215 // have a record in the page table. Since it's just the
216 // hit count, who cares?
217 $dbh->Execute(sprintf("UPDATE $page_tbl SET hits=%d WHERE pagename=%s",
218 $newdata['hits'], $dbh->qstr($pagename)));
221 $where = sprintf("pagename=%s", $dbh->qstr($pagename));
223 $dbh->RowLock($page_tbl,$where);
225 $data = $this->get_pagedata($pagename);
228 $this->_get_pageid($pagename, true); // Creates page record
231 $hits = (empty($data['hits'])) ? 0 : (int)$data['hits'];
232 unset($data['hits']);
234 foreach ($newdata as $key => $val) {
237 else if (empty($val))
242 if ($dbh->Execute("UPDATE $page_tbl"
243 . " SET hits=?, pagedata=?"
244 . " WHERE pagename=?",
245 array($hits, $this->_serialize($data),$pagename))) {
246 $dbh->CommitTrans( );
249 $dbh->RollbackTrans( );
254 function get_cached_html($pagename) {
256 $page_tbl = $this->_table_names['page_tbl'];
257 $row = $dbh->GetRow(sprintf("SELECT cached_html FROM $page_tbl WHERE pagename=%s",
258 $dbh->qstr($pagename)));
259 return $row ? $row[0] : false;
262 function set_cached_html($pagename, $data) {
264 $page_tbl = $this->_table_names['page_tbl'];
265 if (empty($data)) $data = '';
266 $rs = $dbh->Execute("UPDATE $page_tbl"
267 . " SET cached_html=?"
268 . " WHERE pagename=?",
269 array($data, $pagename));
272 function _get_pageid($pagename, $create_if_missing = false) {
276 $cache =& $request->_dbi->_cache->_id_cache;
277 if (isset($cache[$pagename])) {
278 if ($cache[$pagename] or !$create_if_missing) {
279 return $cache[$pagename];
284 $page_tbl = $this->_table_names['page_tbl'];
285 $query = sprintf("SELECT id FROM $page_tbl WHERE pagename=%s",
286 $dbh->qstr($pagename));
287 if (! $create_if_missing ) {
288 $row = $dbh->GetRow($query);
289 return $row ? $row[0] : false;
291 $row = $dbh->GetRow($query);
293 //mysql, mysqli or mysqlt
294 if (substr($dbh->databaseType,0,5) == 'mysql') {
295 // have auto-incrementing, atomic version
296 $rs = $dbh->Execute(sprintf("INSERT INTO $page_tbl"
298 . " VALUES(NULL,%s)",
299 $dbh->qstr($pagename)));
300 $id = $dbh->_insertid();
302 //$id = $dbh->GenID($page_tbl . 'seq');
303 // Better generic version than with adodob::genID
304 //TODO: Does the DBM has subselects? Then we can do it with select max(id)+1
305 $this->lock(array('page'));
307 $dbh->CommitLock($page_tbl);
308 $row = $dbh->GetRow("SELECT MAX(id) FROM $page_tbl");
310 $rs = $dbh->Execute(sprintf("INSERT INTO $page_tbl"
311 . " (id,pagename,hits)"
312 . " VALUES (%d,%s,0)",
313 $id, $dbh->qstr($pagename)));
314 if ($rs) $dbh->CommitTrans( );
315 else $dbh->RollbackTrans( );
316 $this->unlock(array('page'));
325 function get_latest_version($pagename) {
327 extract($this->_table_names);
328 $row = $dbh->GetRow(sprintf("SELECT latestversion"
329 . " FROM $page_tbl, $recent_tbl"
330 . " WHERE $page_tbl.id=$recent_tbl.id"
331 . " AND pagename=%s",
332 $dbh->qstr($pagename)));
333 return $row ? (int)$row[0] : false;
336 function get_previous_version($pagename, $version) {
338 extract($this->_table_names);
339 // Use SELECTLIMIT for maximum portability
340 $rs = $dbh->SelectLimit(sprintf("SELECT version"
341 . " FROM $version_tbl, $page_tbl"
342 . " WHERE $version_tbl.id=$page_tbl.id"
344 . " AND version < %d"
345 . " ORDER BY version DESC"
346 ,$dbh->qstr($pagename),
349 return $rs->fields ? (int)$rs->fields[0] : false;
355 * @param $version int Which version to get.
357 * @return hash The version data, or false if specified version does not
360 function get_versiondata($pagename, $version, $want_content = false) {
362 extract($this->_table_names);
363 extract($this->_expressions);
365 assert(is_string($pagename) and $pagename != '');
366 assert($version > 0);
368 // FIXME: optimization: sometimes don't get page data?
370 $fields = $this->page_tbl_fields . ", $page_tbl.pagedata AS pagedata"
371 . ', ' . $this->version_tbl_fields;
373 $fields = $this->page_tbl_fields . ", '' AS pagedata"
374 . ", $version_tbl.version AS version, $version_tbl.mtime AS mtime, "
375 . "$version_tbl.minor_edit AS minor_edit, $iscontent AS have_content, "
376 . "$version_tbl.versiondata as versiondata";
378 $row = $dbh->GetRow(sprintf("SELECT $fields"
379 . " FROM $page_tbl, $version_tbl"
380 . " WHERE $page_tbl.id=$version_tbl.id"
383 $dbh->qstr($pagename), $version));
384 return $row ? $this->_extract_version_data_num($row, $want_content) : false;
387 function _extract_version_data_num($row, $want_content) {
392 //$pagename &= $row[1];
393 $data = empty($row[8]) ? array() : $this->_unserialize($row[8]);
394 $data['mtime'] = $row[5];
395 $data['is_minor_edit'] = !empty($row[6]);
397 $data['%content'] = $row[7];
399 $data['%content'] = !empty($row[7]);
401 if (!empty($row[3])) {
402 $data['%pagedata'] = $this->_extract_page_data($row[3], $row[2]);
407 function _extract_version_data_assoc($row) {
412 $data = empty($versiondata) ? array() : $this->_unserialize($versiondata);
413 $data['mtime'] = $mtime;
414 $data['is_minor_edit'] = !empty($minor_edit);
416 $data['%content'] = $content;
417 elseif ($have_content)
418 $data['%content'] = true;
420 $data['%content'] = '';
421 if (!empty($pagedata)) {
422 $data['%pagedata'] = $this->_extract_page_data($pagedata, $hits);
428 * Create a new revision of a page.
430 function set_versiondata($pagename, $version, $data) {
432 $version_tbl = $this->_table_names['version_tbl'];
434 $minor_edit = (int) !empty($data['is_minor_edit']);
435 unset($data['is_minor_edit']);
437 $mtime = (int)$data['mtime'];
438 unset($data['mtime']);
439 assert(!empty($mtime));
441 @$content = (string) $data['%content'];
442 unset($data['%content']);
443 unset($data['%pagedata']);
445 $this->lock(array('page','recent','version','nonempty'));
447 $dbh->CommitLock($version_tbl);
448 $id = $this->_get_pageid($pagename, true);
449 $backend_type = $this->backendType();
450 // optimize: mysql can do this with one REPLACE INTO.
451 if (substr($backend_type,0,5) == 'mysql') {
452 $rs = $dbh->Execute(sprintf("REPLACE INTO $version_tbl"
453 . " (id,version,mtime,minor_edit,content,versiondata)"
454 . " VALUES(%d,%d,%d,%d,%s,%s)",
455 $id, $version, $mtime, $minor_edit,
456 $dbh->qstr($content),
457 $dbh->qstr($this->_serialize($data))));
459 $dbh->Execute(sprintf("DELETE FROM $version_tbl"
460 . " WHERE id=%d AND version=%d",
462 $rs = $dbh->Execute("INSERT INTO $version_tbl"
463 . " (id,version,mtime,minor_edit,content,versiondata)"
464 . " VALUES(?,?,?,?,?,?)",
465 array($id, $version, $mtime, $minor_edit,
466 $content, $this->_serialize($data)));
468 $this->_update_recent_table($id);
469 $this->_update_nonempty_table($id);
470 if ($rs) $dbh->CommitTrans( );
471 else $dbh->RollbackTrans( );
472 $this->unlock(array('page','recent','version','nonempty'));
476 * Delete an old revision of a page.
478 function delete_versiondata($pagename, $version) {
480 extract($this->_table_names);
482 $this->lock(array('version'));
483 if ( ($id = $this->_get_pageid($pagename)) ) {
484 $dbh->Execute("DELETE FROM $version_tbl"
485 . " WHERE id=$id AND version=$version");
486 $this->_update_recent_table($id);
487 // This shouldn't be needed (as long as the latestversion
488 // never gets deleted.) But, let's be safe.
489 $this->_update_nonempty_table($id);
491 $this->unlock(array('version'));
495 * Delete page from the database with backup possibility.
496 * i.e save_page('') and DELETE nonempty id
498 * deletePage increments latestversion in recent to a non-existent version,
499 * and removes the nonempty row,
500 * so that get_latest_version returns id+1 and get_previous_version returns prev id
501 * and page->exists returns false.
503 function delete_page($pagename) {
505 extract($this->_table_names);
508 $dbh->CommitLock($recent_tbl);
509 if (($id = $this->_get_pageid($pagename, false)) === false) {
510 $dbh->RollbackTrans( );
514 $user =& $GLOBALS['request']->_user;
515 $meta = array('author' => $user->getId(),
516 'author_id' => $user->getAuthenticatedId(),
518 $this->lock(array('version','recent','nonempty','page','link'));
519 $version = $this->get_latest_version($pagename);
520 if ($dbh->Execute("UPDATE $recent_tbl SET latestversion=latestversion+1,"
521 . "latestmajor=latestversion+1,latestminor=NULL WHERE id=$id")
522 and $dbh->Execute("INSERT INTO $version_tbl"
523 . " (id,version,mtime,minor_edit,content,versiondata)"
524 . " VALUES(?,?,?,?,?,?)",
525 array($id, $version+1, $mtime, 0,
526 '', $this->_serialize($meta)))
527 and $dbh->Execute("DELETE FROM $nonempty_tbl WHERE id=$id")
528 and $this->set_links($pagename, false)
529 // need to keep perms and LOCKED, otherwise you can reset the perm
530 // by action=remove and re-create it with default perms
531 // keep hits but delete meta-data
532 //and $dbh->Execute("UPDATE $page_tbl SET pagedata='' WHERE id=$id")
535 $this->unlock(array('version','recent','nonempty','page','link'));
536 $dbh->CommitTrans( );
539 $this->unlock(array('version','recent','nonempty','page','link'));
540 $dbh->RollbackTrans( );
545 function purge_page($pagename) {
547 extract($this->_table_names);
549 $this->lock(array('version','recent','nonempty','page','link'));
550 if ( ($id = $this->_get_pageid($pagename, false)) ) {
551 $dbh->Execute("DELETE FROM $version_tbl WHERE id=$id");
552 $dbh->Execute("DELETE FROM $recent_tbl WHERE id=$id");
553 $dbh->Execute("DELETE FROM $nonempty_tbl WHERE id=$id");
554 $this->set_links($pagename, false);
555 $row = $dbh->GetRow("SELECT COUNT(*) FROM $link_tbl WHERE linkto=$id");
556 if ($row and $row[0]) {
557 // We're still in the link table (dangling link) so we can't delete this
559 $dbh->Execute("UPDATE $page_tbl SET hits=0, pagedata='' WHERE id=$id");
563 $dbh->Execute("DELETE FROM $page_tbl WHERE id=$id");
567 $result = -1; // already purged or not existing
569 $this->unlock(array('version','recent','nonempty','page','link'));
574 // The only thing we might be interested in updating which we can
575 // do fast in the flags (minor_edit). I think the default
576 // update_versiondata will work fine...
577 //function update_versiondata($pagename, $version, $data) {
580 function set_links($pagename, $links) {
581 // Update link table.
582 // FIXME: optimize: mysql can do this all in one big INSERT/REPLACE.
585 extract($this->_table_names);
587 $this->lock(array('link'));
588 $pageid = $this->_get_pageid($pagename, true);
591 $dbh->Execute("DELETE FROM $link_tbl WHERE linkfrom=$pageid");
592 foreach ($links as $link) {
593 if (isset($linkseen[$link]))
595 $linkseen[$link] = true;
596 $linkid = $this->_get_pageid($link, true);
598 $dbh->Execute("INSERT INTO $link_tbl (linkfrom, linkto)"
599 . " VALUES ($pageid, $linkid)");
602 // purge page table: delete all non-referenced pages
603 // for all previously linked pages...
604 foreach ($dbh->getRow("SELECT $link_tbl.linkto as id FROM $link_tbl".
605 " WHERE linkfrom=$pageid") as $id) {
606 // ...check if the page is empty and has no version
607 if ($dbh->getRow("SELECT $page_tbl.id FROM $page_tbl"
608 . " LEFT JOIN $nonempty_tbl USING (id) "
609 . " LEFT JOIN $version_tbl USING (id)"
610 . " WHERE ISNULL($nonempty_tbl.id) AND"
611 . " ISNULL($version_tbl.id) AND $page_tbl.id=$id")) {
612 $dbh->Execute("DELETE FROM $page_tbl WHERE id=$id"); // this purges the link
613 $dbh->Execute("DELETE FROM $recent_tbl WHERE id=$id"); // may fail
616 $dbh->Execute("DELETE FROM $link_tbl WHERE linkfrom=$pageid");
618 $this->unlock(array('link'));
623 * Find pages which link to or are linked from a page.
625 * Optimization: save request->_dbi->_iwpcache[] to avoid further iswikipage checks
626 * (linkExistingWikiWord or linkUnknownWikiWord)
627 * This is called on every page header GleanDescription, so we can store all the existing links.
629 function get_links($pagename, $reversed=true, $include_empty=false,
630 $sortby=false, $limit=false, $exclude='') {
632 extract($this->_table_names);
635 list($have,$want) = array('linkee', 'linker');
637 list($have,$want) = array('linker', 'linkee');
638 $orderby = $this->sortby($sortby, 'db', array('pagename'));
639 if ($orderby) $orderby = ' ORDER BY $want.' . $orderby;
640 if ($exclude) // array of pagenames
641 $exclude = " AND $want.pagename NOT IN ".$this->_sql_set($exclude);
645 list($offset, $count) = $this->limit($limit);
646 // TODO: check pqsql LIMIT count OFFSET offset
647 $limit = " LIMIT $offset, $count";
651 $qpagename = $dbh->qstr($pagename);
652 // removed ref to FETCH_MODE in next line
653 $result = $dbh->Execute("SELECT $want.id AS id, $want.pagename AS pagename,"
654 . " $want.hits AS hits"
655 . " FROM $link_tbl, $page_tbl linker, $page_tbl linkee"
656 . (!$include_empty ? ", $nonempty_tbl" : '')
657 . " WHERE linkfrom=linker.id AND linkto=linkee.id"
658 . " AND $have.pagename=$qpagename"
659 . (!$include_empty ? " AND $nonempty_tbl.id=$want.id" : "")
660 //. " GROUP BY $want.id"
664 return new WikiDB_backend_ADODB_iter($this, $result, $this->page_tbl_field_list);
668 * Find if a page links to another page
670 function exists_link($pagename, $link, $reversed=false) {
672 extract($this->_table_names);
675 list($have, $want) = array('linkee', 'linker');
677 list($have, $want) = array('linker', 'linkee');
678 $qpagename = $dbh->qstr($pagename);
679 $qlink = $dbh->qstr($link);
680 $row = $dbh->GetRow("SELECT IF($want.pagename,1,0)"
681 . " FROM $link_tbl, $page_tbl linker, $page_tbl linkee, $nonempty_tbl"
682 . " WHERE linkfrom=linker.id AND linkto=linkee.id"
683 . " AND $have.pagename=$qpagename"
684 . " AND $want.pagename=$qlink"
689 function get_all_pages($include_empty=false, $sortby=false, $limit=false, $exclude='') {
691 extract($this->_table_names);
692 $orderby = $this->sortby($sortby, 'db');
693 if ($orderby) $orderby = ' ORDER BY ' . $orderby;
694 if ($exclude) // array of pagenames
695 $exclude = " AND $page_tbl.pagename NOT IN ".$this->_sql_set($exclude);
699 //$dbh->SetFetchMode(ADODB_FETCH_ASSOC);
700 if (strstr($orderby, 'mtime ')) { // was ' mtime'
701 if ($include_empty) {
703 . $this->page_tbl_fields
704 ." FROM $page_tbl, $recent_tbl, $version_tbl"
705 . " WHERE $page_tbl.id=$recent_tbl.id"
706 . " AND $page_tbl.id=$version_tbl.id AND latestversion=version"
712 . $this->page_tbl_fields
713 . " FROM $nonempty_tbl, $page_tbl, $recent_tbl, $version_tbl"
714 . " WHERE $nonempty_tbl.id=$page_tbl.id"
715 . " AND $page_tbl.id=$recent_tbl.id"
716 . " AND $page_tbl.id=$version_tbl.id AND latestversion=version"
721 if ($include_empty) {
723 . $this->page_tbl_fields
725 . ($exclude ? " WHERE $exclude" : '')
729 . $this->page_tbl_fields
730 . " FROM $nonempty_tbl, $page_tbl"
731 . " WHERE $nonempty_tbl.id=$page_tbl.id"
737 // extract from,count from limit
738 list($offset,$count) = $this->limit($limit);
739 $result = $dbh->SelectLimit($sql, $count, $offset);
741 $result = $dbh->Execute($sql);
743 //$dbh->SetFetchMode(ADODB_FETCH_NUM);
744 return new WikiDB_backend_ADODB_iter($this, $result, $this->page_tbl_field_list);
750 function text_search($search, $fullsearch=false, $sortby=false, $limit=false, $exclude=false)) {
752 extract($this->_table_names);
753 $orderby = $this->sortby($sortby, 'db');
754 if ($orderby) $orderby = ' ORDER BY ' . $orderby;
756 $table = "$nonempty_tbl, $page_tbl";
757 $join_clause = "$nonempty_tbl.id=$page_tbl.id";
758 $fields = $this->page_tbl_fields;
759 $field_list = $this->page_tbl_field_list;
760 $searchobj = new WikiDB_backend_ADODB_search($search, $dbh);
763 $table .= ", $recent_tbl";
764 $join_clause .= " AND $page_tbl.id=$recent_tbl.id";
766 $table .= ", $version_tbl";
767 $join_clause .= " AND $page_tbl.id=$version_tbl.id AND latestversion=version";
769 $fields .= ",$page_tbl.pagedata as pagedata," . $this->version_tbl_fields;
770 $field_list = array_merge($field_list, array('pagedata'), $this->version_tbl_field_list);
771 $callback = new WikiMethodCb($searchobj, "_fulltext_match_clause");
773 $callback = new WikiMethodCb($searchobj, "_pagename_match_clause");
776 $search_clause = $search->makeSqlClauseObj($callback);
777 $result = $dbh->Execute("SELECT $fields FROM $table"
778 . " WHERE $join_clause"
779 . " AND ($search_clause)"
781 return new WikiDB_backend_ADODB_iter($this, $result, $field_list);
784 function _sql_match_clause($word) {
785 //not sure if we need this. ADODB may do it for us
786 $word = preg_replace('/(?=[%_\\\\])/', "\\", $word);
788 // (we need it for at least % and _ --- they're the wildcard characters
789 // for the LIKE operator, and we need to quote them if we're searching
790 // for literal '%'s or '_'s. --- I'm not sure about \, but it seems to
792 $word = $this->_dbh->qstr("%".strtolower($word)."%");
793 $page_tbl = $this->_table_names['page_tbl'];
794 return "LOWER($page_tbl.pagename) LIKE $word";
796 function _fullsearch_sql_match_clause($word) {
797 $word = preg_replace('/(?=[%_\\\\])/', "\\", $word); //not sure if we need this
799 $word = $this->_dbh->qstr("%".strtolower($word)."%");
800 $page_tbl = $this->_table_names['page_tbl'];
801 return "LOWER($page_tbl.pagename) LIKE $word OR content LIKE $word";
806 * TODO: efficiently handle wildcards exclusion: exclude=Php* => 'Php%',
807 * not sets. See above, but the above methods find too much.
808 * This is only for already resolved wildcards:
809 * " WHERE $page_tbl.pagename NOT IN ".$this->_sql_set(array('page1','page2'));
811 function _sql_set(&$pagenames) {
813 foreach ($pagenames as $p) {
814 $s .= ($this->_dbh->qstr($p).",");
816 return substr($s,0,-1).")";
820 * Find highest or lowest hit counts.
822 function most_popular($limit=20, $sortby='-hits') {
824 extract($this->_table_names);
831 $where = " AND hits > 0";
833 if ($sortby != '-hits') {
834 if ($order = $this->sortby($sortby, 'db')) $orderby = " ORDER BY " . $order;
837 $orderby = " ORDER BY hits $order";
839 . $this->page_tbl_fields
840 . " FROM $nonempty_tbl, $page_tbl"
841 . " WHERE $nonempty_tbl.id=$page_tbl.id"
845 // extract from,count from limit
846 list($offset,$count) = $this->limit($limit);
847 $result = $dbh->SelectLimit($sql, $count, $offset);
849 $result = $dbh->Execute($sql);
851 return new WikiDB_backend_ADODB_iter($this, $result, $this->page_tbl_field_list);
855 * Find recent changes.
857 function most_recent($params) {
860 $include_minor_revisions = false;
861 $exclude_major_revisions = false;
862 $include_all_revisions = false;
866 extract($this->_table_names);
870 $pick[] = "mtime >= $since";
872 if ($include_all_revisions) {
873 // Include all revisions of each page.
874 $table = "$page_tbl, $version_tbl";
875 $join_clause = "$page_tbl.id=$version_tbl.id";
877 if ($exclude_major_revisions) {
878 // Include only minor revisions
879 $pick[] = "minor_edit <> 0";
881 elseif (!$include_minor_revisions) {
882 // Include only major revisions
883 $pick[] = "minor_edit = 0";
887 $table = "$page_tbl, $recent_tbl";
888 $join_clause = "$page_tbl.id=$recent_tbl.id";
889 $table .= ", $version_tbl";
890 $join_clause .= " AND $version_tbl.id=$page_tbl.id";
892 if ($exclude_major_revisions) {
893 // Include only most recent minor revision
894 $pick[] = 'version=latestminor';
896 elseif (!$include_minor_revisions) {
897 // Include only most recent major revision
898 $pick[] = 'version=latestmajor';
901 // Include only the latest revision (whether major or minor).
902 $pick[] ='version=latestversion';
910 $where_clause = $join_clause;
912 $where_clause .= " AND " . join(" AND ", $pick);
914 . $this->page_tbl_fields . ", " . $this->version_tbl_fields
916 . " WHERE $where_clause"
917 . " ORDER BY mtime $order";
918 // FIXME: use SQL_BUFFER_RESULT for mysql?
920 // extract from,count from limit
921 list($offset,$count) = $this->limit($limit);
922 $result = $dbh->SelectLimit($sql, $count, $offset);
924 $result = $dbh->Execute($sql);
926 //$result->fields['version'] = $result->fields[6];
927 return new WikiDB_backend_ADODB_iter($this, $result,
928 array_merge($this->page_tbl_field_list, $this->version_tbl_field_list));
932 * Find referenced empty pages.
934 function wanted_pages($exclude_from='', $exclude='', $sortby=false, $limit=false) {
936 extract($this->_table_names);
937 if ($orderby = $this->sortby($sortby, 'db', array('pagename','wantedfrom')))
938 $orderby = 'ORDER BY ' . $orderby;
940 if ($exclude_from) // array of pagenames
941 $exclude_from = " AND linked.pagename NOT IN ".$this->_sql_set($exclude_from);
942 if ($exclude) // array of pagenames
943 $exclude = " AND $page_tbl.pagename NOT IN ".$this->_sql_set($exclude);
946 all empty pages, independent of linkstatus:
947 select pagename as empty from page left join nonempty using(id) where isnull(nonempty.id);
948 only all empty pages, which have a linkto:
949 select page.pagename, linked.pagename as wantedfrom from link, page as linked
950 left join page on(link.linkto=page.id) left join nonempty on(link.linkto=nonempty.id)
951 where isnull(nonempty.id) and linked.id=link.linkfrom;
953 $sql = "SELECT $page_tbl.pagename,linked.pagename as wantedfrom"
954 . " FROM $link_tbl,$page_tbl as linked "
955 . " LEFT JOIN $page_tbl ON($link_tbl.linkto=$page_tbl.id)"
956 . " LEFT JOIN $nonempty_tbl ON($link_tbl.linkto=$nonempty_tbl.id)"
957 . " WHERE ISNULL($nonempty_tbl.id) AND linked.id=$link_tbl.linkfrom"
962 // extract from,count from limit
963 list($offset,$count) = $this->limit($limit);
964 $result = $dbh->SelectLimit($sql, $count, $offset);
966 $result = $dbh->Execute($sql);
968 return new WikiDB_backend_ADODB_iter($this, $result, array('pagename','wantedfrom'));
972 * Rename page in the database.
974 function rename_page($pagename, $to) {
976 extract($this->_table_names);
978 $this->lock(array('page','version','recent','nonempty','link'));
979 if ( ($id = $this->_get_pageid($pagename, false)) ) {
980 if ($new = $this->_get_pageid($to, false)) {
982 // This page does not exist (already verified before), but exists in the page table.
983 // So we delete this page.
984 $dbh->query("DELETE FROM $page_tbl WHERE id=$new");
985 $dbh->query("DELETE FROM $version_tbl WHERE id=$new");
986 $dbh->query("DELETE FROM $recent_tbl WHERE id=$new");
987 $dbh->query("DELETE FROM $nonempty_tbl WHERE id=$new");
988 // We have to fix all referring tables to the old id
989 $dbh->query("UPDATE $link_tbl SET linkfrom=$id WHERE linkfrom=$new");
990 $dbh->query("UPDATE $link_tbl SET linkto=$id WHERE linkto=$new");
992 $dbh->query(sprintf("UPDATE $page_tbl SET pagename=%s WHERE id=$id",
995 $this->unlock(array('page'));
999 function _update_recent_table($pageid = false) {
1000 $dbh = &$this->_dbh;
1001 extract($this->_table_names);
1002 extract($this->_expressions);
1004 $pageid = (int)$pageid;
1006 // optimize: mysql can do this with one REPLACE INTO.
1007 $backend_type = $this->backendType();
1008 if (substr($backend_type,0,5) == 'mysql') {
1009 $dbh->Execute("REPLACE INTO $recent_tbl"
1010 . " (id, latestversion, latestmajor, latestminor)"
1011 . " SELECT id, $maxversion, $maxmajor, $maxminor"
1012 . " FROM $version_tbl"
1013 . ( $pageid ? " WHERE id=$pageid" : "")
1016 $this->lock(array('recent'));
1017 $dbh->Execute("DELETE FROM $recent_tbl"
1018 . ( $pageid ? " WHERE id=$pageid" : ""));
1019 $dbh->Execute( "INSERT INTO $recent_tbl"
1020 . " (id, latestversion, latestmajor, latestminor)"
1021 . " SELECT id, $maxversion, $maxmajor, $maxminor"
1022 . " FROM $version_tbl"
1023 . ( $pageid ? " WHERE id=$pageid" : "")
1025 $this->unlock(array('recent'));
1029 function _update_nonempty_table($pageid = false) {
1030 $dbh = &$this->_dbh;
1031 extract($this->_table_names);
1032 extract($this->_expressions);
1034 $pageid = (int)$pageid;
1036 extract($this->_expressions);
1037 $this->lock(array('nonempty'));
1038 $dbh->Execute("DELETE FROM $nonempty_tbl"
1039 . ( $pageid ? " WHERE id=$pageid" : ""));
1040 $dbh->Execute("INSERT INTO $nonempty_tbl (id)"
1041 . " SELECT $recent_tbl.id"
1042 . " FROM $recent_tbl, $version_tbl"
1043 . " WHERE $recent_tbl.id=$version_tbl.id"
1044 . " AND version=latestversion"
1045 // We have some specifics here (Oracle)
1046 //. " AND content<>''"
1047 . " AND content $notempty"
1048 . ( $pageid ? " AND $recent_tbl.id=$pageid" : ""));
1049 $this->unlock(array('nonempty'));
1053 * Grab a write lock on the tables in the SQL database.
1055 * Calls can be nested. The tables won't be unlocked until
1056 * _unlock_database() is called as many times as _lock_database().
1060 function lock($tables, $write_lock = true) {
1061 $this->_dbh->StartTrans();
1062 if ($this->_lock_count++ == 0) {
1063 $this->_current_lock = $tables;
1064 $this->_lock_tables($tables, $write_lock);
1069 * Overridden by non-transaction safe backends.
1071 function _lock_tables($tables, $write_lock) {
1072 return $this->_current_lock;
1076 * Release a write lock on the tables in the SQL database.
1080 * @param $force boolean Unlock even if not every call to lock() has been matched
1081 * by a call to unlock().
1083 * @see _lock_database
1085 function unlock($tables = false, $force = false) {
1086 if ($this->_lock_count == 0) {
1087 $this->_dbh->CompleteTrans(! $force);
1088 $this->_current_lock = false;
1091 if (--$this->_lock_count <= 0 || $force) {
1092 $this->_unlock_tables($tables);
1093 $this->_current_lock = false;
1094 $this->_lock_count = 0;
1096 $this->_dbh->CompleteTrans(! $force);
1100 * overridden by non-transaction safe backends
1102 function _unlock_tables($tables, $write_lock) {
1109 function _serialize($data) {
1112 assert(is_array($data));
1113 return serialize($data);
1119 function _unserialize($data) {
1120 return empty($data) ? array() : unserialize($data);
1123 /* some variables and functions for DB backend abstraction (action=upgrade) */
1124 function database () {
1125 return $this->_dbh->database;
1127 function backendType() {
1128 return $this->_dbh->databaseType;
1130 function connection() {
1131 return $this->_dbh->_connectionID;
1133 function getRow($query) {
1134 return $this->_dbh->getRow($query);
1137 function listOfTables() {
1138 return $this->_dbh->MetaTables();
1141 // other database needs another connection and other privileges.
1142 function listOfFields($database, $table) {
1143 $field_list = array();
1144 $old_db = $this->database();
1145 if ($database != $old_db) {
1146 $conn = $this->_dbh->Connect($this->_parsedDSN['hostspec'],
1147 DBADMIN_USER ? DBADMIN_USER : $this->_parsedDSN['username'],
1148 DBADMIN_PASSWD ? DBADMIN_PASSWD : $this->_parsedDSN['password'],
1151 foreach ($this->_dbh->MetaColumns($table, false) as $field) {
1152 $field_list[] = $field->name;
1154 if ($database != $old_db) {
1155 $this->_dbh->close();
1156 $conn = $this->_dbh->Connect($this->_parsedDSN['hostspec'],
1157 $this->_parsedDSN['username'],
1158 $this->_parsedDSN['password'],
1166 class WikiDB_backend_ADODB_generic_iter
1167 extends WikiDB_backend_iterator
1169 function WikiDB_backend_ADODB_generic_iter($backend, $query_result, $field_list = NULL) {
1170 $this->_backend = &$backend;
1171 $this->_result = $query_result;
1173 if (is_null($field_list)) {
1174 // No field list passed, retrieve from DB
1175 // WikiLens is using the iterator behind the scene
1176 $field_list = array();
1177 $fields = $query_result->FieldCount();
1178 for ($i = 0; $i < $fields ; $i++) {
1179 $field_info = $query_result->FetchField($i);
1180 array_push($field_list, $field_info->name);
1184 $this->_fields = $field_list;
1188 if (!$this->_result) {
1191 $count = $this->_result->numRows();
1192 //$this->_result->Close();
1197 $result = &$this->_result;
1198 $backend = &$this->_backend;
1199 if (!$result || $result->EOF) {
1204 // Convert array to hash
1206 $rec_num = $result->fields;
1207 foreach ($this->_fields as $field) {
1208 $rec_assoc[$field] = $rec_num[$i++];
1210 // check if the cache can be populated here?
1212 $result->MoveNext();
1217 if ($this->_result) {
1218 /* call mysql_free_result($this->_queryID) */
1219 $this->_result->Close();
1220 $this->_result = false;
1225 class WikiDB_backend_ADODB_iter
1226 extends WikiDB_backend_ADODB_generic_iter
1229 $result = &$this->_result;
1230 $backend = &$this->_backend;
1231 if (!$result || $result->EOF) {
1236 // Convert array to hash
1238 $rec_num = $result->fields;
1239 foreach ($this->_fields as $field) {
1240 $rec_assoc[$field] = $rec_num[$i++];
1243 $result->MoveNext();
1244 if (isset($rec_assoc['pagedata']))
1245 $rec_assoc['pagedata'] = $backend->_extract_page_data($rec_assoc['pagedata'], $rec_assoc['hits']);
1246 if (!empty($rec_assoc['version'])) {
1247 $rec_assoc['versiondata'] = $backend->_extract_version_data_assoc($rec_assoc);
1253 class WikiDB_backend_ADODB_search
1254 extends WikiDB_backend_search
1256 function WikiDB_backend_ADODB_search(&$search, &$dbh) {
1257 $this->_dbh =& $dbh;
1258 $this->_case_exact = $search->_case_exact;
1260 function _pagename_match_clause($node) {
1261 $word = $node->sql();
1262 return ($this->_case_exact
1263 ? "pagename LIKE '$word'"
1264 : "LOWER(pagename) LIKE '$word'");
1266 function _fulltext_match_clause($node) {
1267 $word = $node->sql();
1268 return ($this->_case_exact
1269 ? "pagename LIKE '$word' OR content LIKE '$word'"
1270 : "LOWER(pagename) LIKE '$word' OR content LIKE '$word'");
1274 // Following function taken from Pear::DB (prev. from adodb-pear.inc.php).
1275 // Eventually, change index.php to provide the relevant information
1278 * Parse a data source name.
1280 * Additional keys can be added by appending a URI query string to the
1283 * The format of the supplied DSN is in its fullest form:
1285 * phptype(dbsyntax)://username:password@protocol+hostspec/database?option=8&another=true
1288 * Most variations are allowed:
1290 * phptype://username:password@protocol+hostspec:110//usr/db_file.db?mode=0644
1291 * phptype://username:password@hostspec/database_name
1292 * phptype://username:password@hostspec
1293 * phptype://username@hostspec
1294 * phptype://hostspec/database
1295 * phptype://hostspec
1300 * @param string $dsn Data Source Name to be parsed
1302 * @return array an associative array with the following keys:
1303 * + phptype: Database backend used in PHP (mysql, odbc etc.)
1304 * + dbsyntax: Database used with regards to SQL syntax etc.
1305 * + protocol: Communication protocol to use (tcp, unix etc.)
1306 * + hostspec: Host specification (hostname[:port])
1307 * + database: Database to use on the DBMS server
1308 * + username: User name for login
1309 * + password: Password for login
1311 * @author Tomas V.V.Cox <cox@idecnet.com>
1313 function parseDSN($dsn)
1317 'dbsyntax' => false,
1318 'username' => false,
1319 'password' => false,
1320 'protocol' => false,
1321 'hostspec' => false,
1324 'database' => false,
1327 if (is_array($dsn)) {
1328 $dsn = array_merge($parsed, $dsn);
1329 if (!$dsn['dbsyntax']) {
1330 $dsn['dbsyntax'] = $dsn['phptype'];
1335 // Find phptype and dbsyntax
1336 if (($pos = strpos($dsn, '://')) !== false) {
1337 $str = substr($dsn, 0, $pos);
1338 $dsn = substr($dsn, $pos + 3);
1344 // Get phptype and dbsyntax
1345 // $str => phptype(dbsyntax)
1346 if (preg_match('|^(.+?)\((.*?)\)$|', $str, $arr)) {
1347 $parsed['phptype'] = $arr[1];
1348 $parsed['dbsyntax'] = !$arr[2] ? $arr[1] : $arr[2];
1350 $parsed['phptype'] = $str;
1351 $parsed['dbsyntax'] = $str;
1358 // Get (if found): username and password
1359 // $dsn => username:password@protocol+hostspec/database
1360 if (($at = strrpos($dsn,'@')) !== false) {
1361 $str = substr($dsn, 0, $at);
1362 $dsn = substr($dsn, $at + 1);
1363 if (($pos = strpos($str, ':')) !== false) {
1364 $parsed['username'] = rawurldecode(substr($str, 0, $pos));
1365 $parsed['password'] = rawurldecode(substr($str, $pos + 1));
1367 $parsed['username'] = rawurldecode($str);
1371 // Find protocol and hostspec
1373 // $dsn => proto(proto_opts)/database
1374 if (preg_match('|^([^(]+)\((.*?)\)/?(.*?)$|', $dsn, $match)) {
1376 $proto_opts = $match[2] ? $match[2] : false;
1379 // $dsn => protocol+hostspec/database (old format)
1381 if (strpos($dsn, '+') !== false) {
1382 list($proto, $dsn) = explode('+', $dsn, 2);
1384 if (strpos($dsn, '/') !== false) {
1385 list($proto_opts, $dsn) = explode('/', $dsn, 2);
1392 // process the different protocol options
1393 $parsed['protocol'] = (!empty($proto)) ? $proto : 'tcp';
1394 $proto_opts = rawurldecode($proto_opts);
1395 if ($parsed['protocol'] == 'tcp') {
1396 if (strpos($proto_opts, ':') !== false) {
1397 list($parsed['hostspec'], $parsed['port']) = explode(':', $proto_opts);
1399 $parsed['hostspec'] = $proto_opts;
1401 } elseif ($parsed['protocol'] == 'unix') {
1402 $parsed['socket'] = $proto_opts;
1405 // Get dabase if any
1409 if (($pos = strpos($dsn, '?')) === false) {
1410 $parsed['database'] = $dsn;
1411 // /database?param1=value1¶m2=value2
1413 $parsed['database'] = substr($dsn, 0, $pos);
1414 $dsn = substr($dsn, $pos + 1);
1415 if (strpos($dsn, '&') !== false) {
1416 $opts = explode('&', $dsn);
1417 } else { // database?param1=value1
1418 $opts = array($dsn);
1420 foreach ($opts as $opt) {
1421 list($key, $value) = explode('=', $opt);
1422 if (!isset($parsed[$key])) {
1423 // don't allow params overwrite
1424 $parsed[$key] = rawurldecode($value);
1433 // $Log: not supported by cvs2svn $
1434 // Revision 1.74 2005/02/10 19:04:22 rurban
1435 // move getRow up one level to our backend class
1437 // Revision 1.73 2005/02/04 13:43:30 rurban
1438 // fix purge cache error
1440 // Revision 1.72 2005/01/29 19:51:03 rurban
1441 // Bugs item #1077769 fixed by frugal.
1442 // Deleted the wrong page. Fix all other tables also.
1444 // Revision 1.71 2005/01/25 08:01:00 rurban
1445 // fix listOfFields with different database
1447 // Revision 1.70 2005/01/18 20:55:43 rurban
1448 // reformatting and two bug fixes: adding missing parens
1450 // Revision 1.69 2004/12/26 17:14:03 rurban
1451 // fix ADODB MostPopular, avoid limit -1, pass hits on empty data
1453 // Revision 1.68 2004/12/22 18:33:25 rurban
1454 // fix page _id_cache logic for _get_pageid create_if_missing
1456 // Revision 1.67 2004/12/22 15:47:41 rurban
1457 // fix wrong _update_nonempty_table on empty content (i.e. the new deletePage)
1459 // Revision 1.66 2004/12/13 14:39:16 rurban
1462 // Revision 1.65 2004/12/10 22:15:00 rurban
1463 // fix $page->get('_cached_html)
1464 // refactor upgrade db helper _convert_cached_html() to be able to call them from WikiAdminUtils also.
1465 // support 2nd genericSqlQuery param (bind huge arg)
1467 // Revision 1.64 2004/12/10 02:45:27 rurban
1468 // SQL optimization:
1469 // put _cached_html from pagedata into a new seperate blob, not huge serialized string.
1470 // it is only rarelely needed: for current page only, if-not-modified
1471 // but was extracted for every simple page iteration.
1473 // Revision 1.63 2004/12/08 12:55:51 rurban
1474 // support new non-destructive delete_page via generic backend method
1476 // Revision 1.62 2004/12/06 19:50:04 rurban
1477 // enable action=remove which is undoable and seeable in RecentChanges: ADODB ony for now.
1478 // renamed delete_page to purge_page.
1479 // enable action=edit&version=-1 to force creation of a new version.
1480 // added BABYCART_PATH config
1481 // fixed magiqc in adodb.inc.php
1482 // and some more docs
1484 // Revision 1.61 2004/11/30 17:45:53 rurban
1485 // exists_links backend implementation
1487 // Revision 1.60 2004/11/28 20:42:18 rurban
1488 // Optimize PearDB _extract_version_data and _extract_page_data.
1490 // Revision 1.59 2004/11/27 14:39:05 rurban
1491 // simpified regex search architecture:
1492 // no db specific node methods anymore,
1493 // new sql() method for each node
1494 // parallel to regexp() (which returns pcre)
1495 // regex types bitmasked (op's not yet)
1497 // clarified WikiDB::quote() backend methods:
1498 // ->quote() adds surrounsing quotes
1499 // ->qstr() (new method) assumes strings and adds no quotes! (in contrast to ADODB)
1500 // pear and adodb have now unified quote methods for all generic queries.
1502 // Revision 1.58 2004/11/26 18:39:02 rurban
1503 // new regex search parser and SQL backends (90% complete, glob and pcre backends missing)
1505 // Revision 1.57 2004/11/25 17:20:51 rurban
1506 // and again a couple of more native db args: backlinks
1508 // Revision 1.56 2004/11/23 13:35:48 rurban
1509 // add case_exact search
1511 // Revision 1.55 2004/11/21 11:59:26 rurban
1512 // remove final \n to be ob_cache independent
1514 // Revision 1.54 2004/11/20 17:49:39 rurban
1515 // add fast exclude support to SQL get_all_pages
1517 // Revision 1.53 2004/11/20 17:35:58 rurban
1518 // improved WantedPages SQL backends
1519 // PageList::sortby new 3rd arg valid_fields (override db fields)
1520 // WantedPages sql pager inexact for performance reasons:
1521 // assume 3 wantedfrom per page, to be correct, no getTotal()
1522 // support exclude argument for get_all_pages, new _sql_set()
1524 // Revision 1.52 2004/11/17 20:07:17 rurban
1527 // Revision 1.51 2004/11/15 15:57:37 rurban
1528 // silent cache warning
1530 // Revision 1.50 2004/11/10 19:32:23 rurban
1531 // * optimize increaseHitCount, esp. for mysql.
1532 // * prepend dirs to the include_path (phpwiki_dir for faster searches)
1533 // * Pear_DB version logic (awful but needed)
1534 // * fix broken ADODB quote
1535 // * _extract_page_data simplification
1537 // Revision 1.49 2004/11/10 15:29:21 rurban
1538 // * requires newer Pear_DB (as the internal one): quote() uses now escapeSimple for strings
1539 // * ACCESS_LOG_SQL: fix cause request not yet initialized
1540 // * WikiDB: moved SQL specific methods upwards
1541 // * new Pear_DB quoting: same as ADODB and as newer Pear_DB.
1542 // fixes all around: WikiGroup, WikiUserNew SQL methods, SQL logging
1544 // Revision 1.48 2004/11/09 17:11:16 rurban
1545 // * revert to the wikidb ref passing. there's no memory abuse there.
1546 // * use new wikidb->_cache->_id_cache[] instead of wikidb->_iwpcache, to effectively
1547 // store page ids with getPageLinks (GleanDescription) of all existing pages, which
1548 // are also needed at the rendering for linkExistingWikiWord().
1549 // pass options to pageiterator.
1550 // use this cache also for _get_pageid()
1551 // This saves about 8 SELECT count per page (num all pagelinks).
1552 // * fix passing of all page fields to the pageiterator.
1553 // * fix overlarge session data which got broken with the latest ACCESS_LOG_SQL changes
1555 // Revision 1.47 2004/11/06 17:11:42 rurban
1556 // The optimized version doesn't query for pagedata anymore.
1558 // Revision 1.46 2004/11/01 10:43:58 rurban
1559 // seperate PassUser methods into seperate dir (memory usage)
1560 // fix WikiUser (old) overlarge data session
1561 // remove wikidb arg from various page class methods, use global ->_dbi instead
1564 // Revision 1.45 2004/10/14 17:19:17 rurban
1565 // allow most_popular sortby arguments
1567 // Revision 1.44 2004/09/06 08:33:09 rurban
1568 // force explicit mysql auto-incrementing, atomic version
1570 // Revision 1.43 2004/07/10 08:50:24 rurban
1571 // applied patch by Philippe Vanhaesendonck:
1572 // pass column list to iterators so we can FETCH_NUM in all cases.
1573 // bind UPDATE pramas for huge pagedata.
1574 // portable oracle backend
1576 // Revision 1.42 2004/07/09 10:06:50 rurban
1577 // Use backend specific sortby and sortable_columns method, to be able to
1578 // select between native (Db backend) and custom (PageList) sorting.
1579 // Fixed PageList::AddPageList (missed the first)
1580 // Added the author/creator.. name to AllPagesBy...
1581 // display no pages if none matched.
1582 // Improved dba and file sortby().
1583 // Use &$request reference
1585 // Revision 1.41 2004/07/08 21:32:35 rurban
1586 // Prevent from more warnings, minor db and sort optimizations
1588 // Revision 1.40 2004/07/08 16:56:16 rurban
1589 // use the backendType abstraction
1591 // Revision 1.39 2004/07/05 13:56:22 rurban
1592 // sqlite autoincrement fix
1594 // Revision 1.38 2004/07/05 12:57:54 rurban
1595 // add mysql timeout
1597 // Revision 1.37 2004/07/04 10:24:43 rurban
1598 // forgot the expressions
1600 // Revision 1.36 2004/07/03 16:51:06 rurban
1601 // optional DBADMIN_USER:DBADMIN_PASSWD for action=upgrade (if no ALTER permission)
1602 // added atomic mysql REPLACE for PearDB as in ADODB
1603 // fixed _lock_tables typo links => link
1604 // fixes unserialize ADODB bug in line 180
1606 // Revision 1.35 2004/06/28 14:45:12 rurban
1607 // fix adodb_sqlite to have the same dsn syntax as pear, use pconnect if requested
1609 // Revision 1.34 2004/06/28 14:17:38 rurban
1610 // updated DSN parser from Pear. esp. for sqlite
1612 // Revision 1.33 2004/06/27 10:26:02 rurban
1613 // oci8 patch by Philippe Vanhaesendonck + some ADODB notes+fixes
1615 // Revision 1.32 2004/06/25 14:15:08 rurban
1616 // reduce memory footprint by caching only requested pagedate content (improving most page iterators)
1618 // Revision 1.31 2004/06/16 10:38:59 rurban
1619 // Disallow refernces in calls if the declaration is a reference
1620 // ("allow_call_time_pass_reference clean").
1621 // PhpWiki is now allow_call_time_pass_reference = Off clean,
1622 // but several external libraries may not.
1623 // In detail these libs look to be affected (not tested):
1627 // Revision 1.30 2004/06/07 19:31:31 rurban
1628 // fixed ADOOB upgrade: listOfFields()
1630 // Revision 1.29 2004/05/12 10:49:55 rurban
1631 // require_once fix for those libs which are loaded before FileFinder and
1632 // its automatic include_path fix, and where require_once doesn't grok
1633 // dirname(__FILE__) != './lib'
1634 // upgrade fix with PearDB
1635 // navbar.tmpl: remove spaces for IE button alignment
1637 // Revision 1.28 2004/05/06 19:26:16 rurban
1638 // improve stability, trying to find the InlineParser endless loop on sf.net
1640 // remove end-of-zip comments to fix sf.net bug #777278 and probably #859628
1642 // Revision 1.27 2004/05/06 17:30:38 rurban
1643 // CategoryGroup: oops, dos2unix eol
1644 // improved phpwiki_version:
1645 // pre -= .0001 (1.3.10pre: 1030.099)
1646 // -p1 += .001 (1.3.9-p1: 1030.091)
1647 // improved InstallTable for mysql and generic SQL versions and all newer tables so far.
1648 // abstracted more ADODB/PearDB methods for action=upgrade stuff:
1649 // backend->backendType(), backend->database(),
1650 // backend->listOfFields(),
1651 // backend->listOfTables(),
1653 // Revision 1.26 2004/04/26 20:44:35 rurban
1654 // locking table specific for better databases
1656 // Revision 1.25 2004/04/20 00:06:04 rurban
1657 // themable paging support
1659 // Revision 1.24 2004/04/18 01:34:20 rurban
1660 // protect most_popular from sortby=mtime
1662 // Revision 1.23 2004/04/16 14:19:39 rurban
1663 // updated ADODB notes
1666 // (c-file-style: "gnu")
1670 // c-basic-offset: 4
1671 // c-hanging-comment-ender-p: nil
1672 // indent-tabs-mode: nil