2 rcs_id('$Id: ADODB.php,v 1.91 2006-11-19 14:03:32 rurban Exp $');
5 Copyright 2002,2004,2005,2006 $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 (since 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
42 * phpwiki-1.3.12: get rid of ISNULL
43 * phpwiki-1.3.13: tsearch2 and stored procedures
45 * ADODB basic differences to PearDB: It pre-fetches the first row into fields,
46 * is dirtier in style, layout and more low-level ("worse is better").
47 * It has less needed basic features (modifyQuery, locks, ...), but some more
48 * unneeded features included: paging, monitoring and sessions, and much more drivers.
49 * No locking (which PearDB supports in some backends), and sequences are very
50 * bad compared to PearDB.
52 * Old Comments, by Lawrence Akka:
53 * 1) ADODB's GetRow() is slightly different from that in PEAR. It does not
54 * accept a fetchmode parameter
55 * That doesn't matter too much here, since we only ever use FETCHMODE_ASSOC
56 * 2) No need for ''s around strings in sprintf arguments - qstr puts them
58 * 3) ADODB has a version of GetOne, but it is difficult to use it when
59 * FETCH_ASSOC is in effect.
60 * Instead, use $rs = Execute($query); $value = $rs->fields["$colname"]
61 * 4) No error handling yet - could use ADOConnection->raiseErrorFn
62 * 5) It used to be faster then PEAR/DB at the beginning of 2002.
63 * Now at August 2002 PEAR/DB with our own page cache added,
64 * performance is comparable.
67 require_once('lib/WikiDB/backend.php');
68 // Error handling - calls trigger_error. NB - does not close the connection. Does it need to?
69 include_once('lib/WikiDB/adodb/adodb-errorhandler.inc.php');
70 // include the main adodb file
71 require_once('lib/WikiDB/adodb/adodb.inc.php');
73 class WikiDB_backend_ADODB
74 extends WikiDB_backend
77 function WikiDB_backend_ADODB ($dbparams) {
78 $parsed = parseDSN($dbparams['dsn']);
79 $this->_dbparams = $dbparams;
80 $this->_parsedDSN =& $parsed;
81 $this->_dbh = &ADONewConnection($parsed['phptype']);
82 if (DEBUG & _DEBUG_SQL) {
83 $this->_dbh->debug = true;
84 $GLOBALS['ADODB_OUTP'] = '_sql_debuglog';
86 $this->_dsn = $parsed;
87 // persistent is defined as DSN option, or with a config value.
88 // phptype://username:password@hostspec/database?persistent=false
89 if (!empty($parsed['persistent']) or DATABASE_PERSISTENT)
90 $conn = $this->_dbh->PConnect($parsed['hostspec'],$parsed['username'],
91 $parsed['password'], $parsed['database']);
93 $conn = $this->_dbh->Connect($parsed['hostspec'],$parsed['username'],
94 $parsed['password'], $parsed['database']);
96 // Since 1.3.10 we use the faster ADODB_FETCH_NUM,
97 // with some ASSOC based recordsets.
98 $GLOBALS['ADODB_FETCH_MODE'] = ADODB_FETCH_NUM;
99 $this->_dbh->SetFetchMode(ADODB_FETCH_NUM);
100 $GLOBALS['ADODB_COUNTRECS'] = false;
102 $prefix = isset($dbparams['prefix']) ? $dbparams['prefix'] : '';
104 = array('page_tbl' => $prefix . 'page',
105 'version_tbl' => $prefix . 'version',
106 'link_tbl' => $prefix . 'link',
107 'recent_tbl' => $prefix . 'recent',
108 'nonempty_tbl' => $prefix . 'nonempty');
109 $page_tbl = $this->_table_names['page_tbl'];
110 $version_tbl = $this->_table_names['version_tbl'];
111 $this->page_tbl_fields = "$page_tbl.id AS id, $page_tbl.pagename AS pagename, "
112 . "$page_tbl.hits AS hits";
113 $this->links_field_list = array('id', 'pagename');
114 $this->page_tbl_field_list = array('id', 'pagename', 'hits');
115 $this->version_tbl_fields = "$version_tbl.version AS version, "
116 . "$version_tbl.mtime AS mtime, "
117 . "$version_tbl.minor_edit AS minor_edit, $version_tbl.content AS content, "
118 . "$version_tbl.versiondata AS versiondata";
119 $this->version_tbl_field_list = array('version', 'mtime', 'minor_edit', 'content',
123 = array('maxmajor' => "MAX(CASE WHEN minor_edit=0 THEN version END)",
124 'maxminor' => "MAX(CASE WHEN minor_edit<>0 THEN version END)",
125 'maxversion' => "MAX(version)",
126 'notempty' => "<>''",
127 'iscontent' => "$version_tbl.content<>''");
128 $this->_lock_count = 0;
132 * Close database connection.
137 if ($this->_lock_count) {
138 trigger_error("WARNING: database still locked " .
139 '(lock_count = $this->_lock_count)' . "\n<br />",
142 // $this->_dbh->setErrorHandling(PEAR_ERROR_PRINT); // prevent recursive loops.
143 $this->unlock(false,'force');
145 $this->_dbh->close();
150 * Fast test for wikipage.
152 function is_wiki_page($pagename) {
154 extract($this->_table_names);
155 $row = $dbh->GetRow(sprintf("SELECT $page_tbl.id AS id"
156 . " FROM $nonempty_tbl, $page_tbl"
157 . " WHERE $nonempty_tbl.id=$page_tbl.id"
158 . " AND pagename=%s",
159 $dbh->qstr($pagename)));
160 return $row ? $row[0] : false;
163 function get_all_pagenames() {
165 extract($this->_table_names);
166 $result = $dbh->Execute("SELECT pagename"
167 . " FROM $nonempty_tbl, $page_tbl"
168 . " WHERE $nonempty_tbl.id=$page_tbl.id");
169 return $result->GetArray();
173 * filter (nonempty pages) currently ignored
175 function numPages($filter=false, $exclude='') {
177 extract($this->_table_names);
178 $result = $dbh->getRow("SELECT count(*)"
179 . " FROM $nonempty_tbl, $page_tbl"
180 . " WHERE $nonempty_tbl.id=$page_tbl.id");
184 function increaseHitCount($pagename) {
186 // Hits is the only thing we can update in a fast manner.
187 // Note that this will fail silently if the page does not
188 // have a record in the page table. Since it's just the
189 // hit count, who cares?
190 $dbh->Execute(sprintf("UPDATE %s SET hits=hits+1 WHERE pagename=%s",
191 $this->_table_names['page_tbl'],
192 $dbh->qstr($pagename)));
197 * Read page information from database.
199 function get_pagedata($pagename) {
201 $row = $dbh->GetRow(sprintf("SELECT id,pagename,hits,pagedata FROM %s WHERE pagename=%s",
202 $this->_table_names['page_tbl'],
203 $dbh->qstr($pagename)));
204 return $row ? $this->_extract_page_data($row[3], $row[2]) : false;
207 function _extract_page_data($data, $hits) {
209 return array('hits' => $hits);
211 return array_merge(array('hits' => $hits), $this->_unserialize($data));
214 function update_pagedata($pagename, $newdata) {
216 $page_tbl = $this->_table_names['page_tbl'];
218 // Hits is the only thing we can update in a fast manner.
219 if (count($newdata) == 1 && isset($newdata['hits'])) {
220 // Note that this will fail silently if the page does not
221 // have a record in the page table. Since it's just the
222 // hit count, who cares?
223 $dbh->Execute(sprintf("UPDATE $page_tbl SET hits=%d WHERE pagename=%s",
224 $newdata['hits'], $dbh->qstr($pagename)));
227 $where = sprintf("pagename=%s", $dbh->qstr($pagename));
229 $dbh->RowLock($page_tbl,$where);
231 $data = $this->get_pagedata($pagename);
234 $this->_get_pageid($pagename, true); // Creates page record
237 $hits = (empty($data['hits'])) ? 0 : (int)$data['hits'];
238 unset($data['hits']);
240 foreach ($newdata as $key => $val) {
243 else if (empty($val))
248 if ($dbh->Execute("UPDATE $page_tbl"
249 . " SET hits=?, pagedata=?"
250 . " WHERE pagename=?",
251 array($hits, $this->_serialize($data), $pagename))) {
252 $dbh->CommitTrans( );
255 $dbh->RollbackTrans( );
260 function get_cached_html($pagename) {
262 $page_tbl = $this->_table_names['page_tbl'];
263 $row = $dbh->GetRow(sprintf("SELECT cached_html FROM $page_tbl WHERE pagename=%s",
264 $dbh->qstr($pagename)));
265 return $row ? $row[0] : false;
268 function set_cached_html($pagename, $data) {
270 $page_tbl = $this->_table_names['page_tbl'];
271 if (empty($data)) $data = '';
272 $rs = $dbh->Execute("UPDATE $page_tbl"
273 . " SET cached_html=?"
274 . " WHERE pagename=?",
275 array($data, $pagename));
278 function _get_pageid($pagename, $create_if_missing = false) {
282 $cache =& $request->_dbi->_cache->_id_cache;
283 if (isset($cache[$pagename])) {
284 if ($cache[$pagename] or !$create_if_missing) {
285 return $cache[$pagename];
290 $page_tbl = $this->_table_names['page_tbl'];
291 $query = sprintf("SELECT id FROM $page_tbl WHERE pagename=%s",
292 $dbh->qstr($pagename));
293 if (! $create_if_missing ) {
294 $row = $dbh->GetRow($query);
295 return $row ? $row[0] : false;
297 $row = $dbh->GetRow($query);
299 //TODO: Does the DBM has subselects? Then we can do it with select max(id)+1
300 // $this->lock(array('page'));
302 $dbh->CommitLock($page_tbl);
303 if ($dbh->hasGenID) {
304 $id = $dbh->GenID($page_tbl."_id");
306 // Better generic version than with adodb::genID
307 $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 // $this->unlock(array('page'));
324 function get_latest_version($pagename) {
326 extract($this->_table_names);
327 $row = $dbh->GetRow(sprintf("SELECT latestversion"
328 . " FROM $page_tbl, $recent_tbl"
329 . " WHERE $page_tbl.id=$recent_tbl.id"
330 . " AND pagename=%s",
331 $dbh->qstr($pagename)));
332 return $row ? (int)$row[0] : false;
335 function get_previous_version($pagename, $version) {
337 extract($this->_table_names);
338 // Use SELECTLIMIT for maximum portability
339 $rs = $dbh->SelectLimit(sprintf("SELECT version"
340 . " FROM $version_tbl, $page_tbl"
341 . " WHERE $version_tbl.id=$page_tbl.id"
343 . " AND version < %d"
344 . " ORDER BY version DESC",
345 $dbh->qstr($pagename),
348 return $rs->fields ? (int)$rs->fields[0] : false;
354 * @param $version int Which version to get.
356 * @return hash The version data, or false if specified version does not
359 function get_versiondata($pagename, $version, $want_content = false) {
361 extract($this->_table_names);
362 extract($this->_expressions);
364 assert(is_string($pagename) and $pagename != '');
365 assert($version > 0);
367 // FIXME: optimization: sometimes don't get page data?
369 $fields = $this->page_tbl_fields . ", $page_tbl.pagedata AS pagedata"
370 . ', ' . $this->version_tbl_fields;
372 $fields = $this->page_tbl_fields . ", '' AS pagedata"
373 . ", $version_tbl.version AS version, $version_tbl.mtime AS mtime, "
374 . "$version_tbl.minor_edit AS minor_edit, $iscontent AS have_content, "
375 . "$version_tbl.versiondata as versiondata";
377 $row = $dbh->GetRow(sprintf("SELECT $fields"
378 . " FROM $page_tbl, $version_tbl"
379 . " WHERE $page_tbl.id=$version_tbl.id"
382 $dbh->qstr($pagename), $version));
383 return $row ? $this->_extract_version_data_num($row, $want_content) : false;
386 function _extract_version_data_num($row, $want_content) {
391 //$pagename &= $row[1];
392 $data = empty($row[8]) ? array() : $this->_unserialize($row[8]);
393 $data['mtime'] = $row[5];
394 $data['is_minor_edit'] = !empty($row[6]);
396 $data['%content'] = $row[7];
398 $data['%content'] = !empty($row[7]);
400 if (!empty($row[3])) {
401 $data['%pagedata'] = $this->_extract_page_data($row[3], $row[2]);
406 function _extract_version_data_assoc($row) {
411 $data = empty($versiondata) ? array() : $this->_unserialize($versiondata);
412 $data['mtime'] = $mtime;
413 $data['is_minor_edit'] = !empty($minor_edit);
415 $data['%content'] = $content;
416 elseif ($have_content)
417 $data['%content'] = true;
419 $data['%content'] = '';
420 if (!empty($pagedata)) {
421 // hmm, $pagedata = is already extracted by WikiDB_backend_ADODB_iter
422 //$data['%pagedata'] = $this->_extract_page_data($pagedata, $hits);
423 $data['%pagedata'] = $pagedata;
429 * Create a new revision of a page.
431 function set_versiondata($pagename, $version, $data) {
433 $version_tbl = $this->_table_names['version_tbl'];
435 $minor_edit = (int) !empty($data['is_minor_edit']);
436 unset($data['is_minor_edit']);
438 $mtime = (int)$data['mtime'];
439 unset($data['mtime']);
440 assert(!empty($mtime));
442 @$content = (string) $data['%content'];
443 unset($data['%content']);
444 unset($data['%pagedata']);
446 $this->lock(array('page','recent','version','nonempty'));
448 $dbh->CommitLock($version_tbl);
449 $id = $this->_get_pageid($pagename, true);
450 $backend_type = $this->backendType();
451 $dbh->Execute(sprintf("DELETE FROM $version_tbl"
452 . " WHERE id=%d AND version=%d",
454 $rs = $dbh->Execute("INSERT INTO $version_tbl"
455 . " (id,version,mtime,minor_edit,content,versiondata)"
456 . " VALUES(?,?,?,?,?,?)",
457 array($id, $version, $mtime, $minor_edit,
458 $content, $this->_serialize($data)));
459 $this->_update_recent_table($id);
460 $this->_update_nonempty_table($id);
461 if ($rs) $dbh->CommitTrans( );
462 else $dbh->RollbackTrans( );
463 $this->unlock(array('page','recent','version','nonempty'));
467 * Delete an old revision of a page.
469 function delete_versiondata($pagename, $version) {
471 extract($this->_table_names);
473 $this->lock(array('version'));
474 if ( ($id = $this->_get_pageid($pagename)) ) {
475 $dbh->Execute("DELETE FROM $version_tbl"
476 . " WHERE id=$id AND version=$version");
477 $this->_update_recent_table($id);
478 // This shouldn't be needed (as long as the latestversion
479 // never gets deleted.) But, let's be safe.
480 $this->_update_nonempty_table($id);
482 $this->unlock(array('version'));
486 * Delete page from the database with backup possibility.
487 * i.e save_page('') and DELETE nonempty id
489 * deletePage increments latestversion in recent to a non-existent version,
490 * and removes the nonempty row,
491 * so that get_latest_version returns id+1 and get_previous_version returns prev id
492 * and page->exists returns false.
494 function delete_page($pagename) {
496 extract($this->_table_names);
499 $dbh->CommitLock($recent_tbl);
500 if (($id = $this->_get_pageid($pagename, false)) === false) {
501 $dbh->RollbackTrans( );
505 $user =& $GLOBALS['request']->_user;
506 $meta = array('author' => $user->getId(),
507 'author_id' => $user->getAuthenticatedId(),
509 $this->lock(array('version','recent','nonempty','page','link'));
510 $version = $this->get_latest_version($pagename);
511 if ($dbh->Execute("UPDATE $recent_tbl SET latestversion=latestversion+1,"
512 . "latestmajor=latestversion+1,latestminor=NULL WHERE id=$id")
513 and $dbh->Execute("INSERT INTO $version_tbl"
514 . " (id,version,mtime,minor_edit,content,versiondata)"
515 . " VALUES(?,?,?,?,?,?)",
516 array($id, $version+1, $mtime, 0,
517 '', $this->_serialize($meta)))
518 and $dbh->Execute("DELETE FROM $nonempty_tbl WHERE id=$id")
519 and $this->set_links($pagename, false)
520 // need to keep perms and LOCKED, otherwise you can reset the perm
521 // by action=remove and re-create it with default perms
522 // keep hits but delete meta-data
523 //and $dbh->Execute("UPDATE $page_tbl SET pagedata='' WHERE id=$id")
526 $this->unlock(array('version','recent','nonempty','page','link'));
527 $dbh->CommitTrans( );
530 $this->unlock(array('version','recent','nonempty','page','link'));
531 $dbh->RollbackTrans( );
536 function purge_page($pagename) {
538 extract($this->_table_names);
540 $this->lock(array('version','recent','nonempty','page','link'));
541 if ( ($id = $this->_get_pageid($pagename, false)) ) {
542 $dbh->Execute("DELETE FROM $version_tbl WHERE id=$id");
543 $dbh->Execute("DELETE FROM $recent_tbl WHERE id=$id");
544 $dbh->Execute("DELETE FROM $nonempty_tbl WHERE id=$id");
545 $this->set_links($pagename, false);
546 $row = $dbh->GetRow("SELECT COUNT(*) FROM $link_tbl WHERE linkto=$id");
547 if ($row and $row[0]) {
548 // We're still in the link table (dangling link) so we can't delete this
550 $dbh->Execute("UPDATE $page_tbl SET hits=0, pagedata='' WHERE id=$id");
554 $dbh->Execute("DELETE FROM $page_tbl WHERE id=$id");
558 $result = -1; // already purged or not existing
560 $this->unlock(array('version','recent','nonempty','page','link'));
565 // The only thing we might be interested in updating which we can
566 // do fast in the flags (minor_edit). I think the default
567 // update_versiondata will work fine...
568 //function update_versiondata($pagename, $version, $data) {
573 * on DEBUG: delete old, deleted links from page
575 function set_links($pagename, $links) {
576 // FIXME: optimize: mysql can do this all in one big INSERT/REPLACE.
579 extract($this->_table_names);
581 $this->lock(array('link'));
582 $pageid = $this->_get_pageid($pagename, true);
584 $oldlinks = $dbh->getAssoc("SELECT $link_tbl.linkto as id, page.pagename FROM $link_tbl"
585 ." JOIN page ON ($link_tbl.linkto = page.id)"
586 ." WHERE linkfrom=$pageid");
587 // Delete current links,
588 $dbh->Execute("DELETE FROM $link_tbl WHERE linkfrom=$pageid");
589 // and insert new links. Faster than checking for all single links
591 foreach ($links as $link) {
592 $linkto = $link['linkto'];
593 if ($link['relation'])
594 $relation = $this->_get_pageid($link['relation'], true);
598 if (isset($linkseen[$linkto]) and !$relation) {
602 $linkseen[$linkto] = true;
604 $linkid = $this->_get_pageid($linkto, true);
607 $dbh->Execute("INSERT INTO $link_tbl (linkfrom, linkto, relation)"
608 . " VALUES ($pageid, $linkid, $relation)");
610 $dbh->Execute("INSERT INTO $link_tbl (linkfrom, linkto)"
611 . " VALUES ($pageid, $linkid)");
613 if (array_key_exists($linkid, $oldlinks)) {
614 // This was also in the previous page
615 unset($oldlinks[$linkid]);
619 // purge page table: delete all non-referenced pages
620 // for all previously linked pages...
621 if (DEBUG and $oldlinks) {
622 // trigger_error("purge page table: delete all non-referenced pages...", E_USER_NOTICE);
623 foreach ($oldlinks as $id => $name) {
624 // ...check if the page is empty and has no version
625 if ($dbh->getRow("SELECT $page_tbl.id FROM $page_tbl"
626 . " LEFT JOIN $nonempty_tbl USING (id) "
627 . " LEFT JOIN $version_tbl USING (id)"
628 . " WHERE $nonempty_tbl.id is NULL"
629 . " AND $version_tbl.id is NULL"
630 . " AND $page_tbl.id=$id"))
632 trigger_error("delete empty and non-referenced link $name ($id)", E_USER_NOTICE);
633 $dbh->Execute("DELETE FROM $page_tbl WHERE id=$id"); // this purges the link
634 $dbh->Execute("DELETE FROM $recent_tbl WHERE id=$id"); // may fail
638 $this->unlock(array('link'));
642 /* get all oldlinks in hash => id, relation
643 check for all new links
645 function set_links1($pagename, $links) {
648 extract($this->_table_names);
650 $this->lock(array('link'));
651 $pageid = $this->_get_pageid($pagename, true);
653 $oldlinks = $dbh->getAssoc("SELECT $link_tbl.linkto as linkto, $link_tbl.relation, page.pagename"
655 ." JOIN page ON ($link_tbl.linkto = page.id)"
656 ." WHERE linkfrom=$pageid");
658 * X => [1,0 2,0 1,1] X => [1,1 3,0]
659 * => delete 1,0 2,0 + insert 3,0
662 foreach ($links as $link) {
663 $linkto = $link['linkto'];
664 if ($link['relation'])
665 $relation = $this->_get_pageid($link['relation'], true);
669 if (isset($linkseen[$linkto]) and !$relation) {
673 $linkseen[$linkto] = true;
675 $linkid = $this->_get_pageid($linkto, true);
678 // find linkfrom,linkto,relation triple in oldlinks
679 foreach ($oldlinks as $l) {
680 if ($relation) { // relation NOT NULL
681 if ($l['linkto'] == $linkid and $l['relation'] == $relation) {
691 $dbh->Execute("INSERT INTO $link_tbl (linkfrom, linkto, relation)"
692 . " VALUES ($pageid, $linkid, $relation)");
694 $dbh->Execute("INSERT INTO $link_tbl (linkfrom, linkto)"
695 . " VALUES ($pageid, $linkid)");
699 if (array_key_exists($linkid, $oldlinks)) {
700 // This was also in the previous page
701 unset($oldlinks[$linkid]);
705 // purge page table: delete all non-referenced pages
706 // for all previously linked pages...
707 if (DEBUG and $oldlinks) {
708 // trigger_error("purge page table: delete all non-referenced pages...", E_USER_NOTICE);
709 foreach ($oldlinks as $id => $name) {
710 // ...check if the page is empty and has no version
711 if ($dbh->getRow("SELECT $page_tbl.id FROM $page_tbl"
712 . " LEFT JOIN $nonempty_tbl USING (id) "
713 . " LEFT JOIN $version_tbl USING (id)"
714 . " WHERE $nonempty_tbl.id is NULL"
715 . " AND $version_tbl.id is NULL"
716 . " AND $page_tbl.id=$id"))
718 trigger_error("delete empty and non-referenced link $name ($id)", E_USER_NOTICE);
719 $dbh->Execute("DELETE FROM $page_tbl WHERE id=$id"); // this purges the link
720 $dbh->Execute("DELETE FROM $recent_tbl WHERE id=$id"); // may fail
724 $this->unlock(array('link'));
729 * Find pages which link to or are linked from a page.
731 * Optimization: save request->_dbi->_iwpcache[] to avoid further iswikipage checks
732 * (linkExistingWikiWord or linkUnknownWikiWord)
733 * This is called on every page header GleanDescription, so we can store all the
736 * relations: $backend->get_links is responsible to add the relation to the pagehash
737 * as 'linkrelation' key as pagename. See WikiDB_PageIterator::next
738 * if (isset($next['linkrelation']))
740 function get_links($pagename, $reversed=true, $include_empty=false,
741 $sortby=false, $limit=false, $exclude='',
742 $want_relations = false)
745 extract($this->_table_names);
748 list($have,$want) = array('linkee', 'linker');
750 list($have,$want) = array('linker', 'linkee');
751 $orderby = $this->sortby($sortby, 'db', array('pagename'));
752 if ($orderby) $orderby = ' ORDER BY $want.' . $orderby;
753 if ($exclude) // array of pagenames
754 $exclude = " AND $want.pagename NOT IN ".$this->_sql_set($exclude);
758 $qpagename = $dbh->qstr($pagename);
759 // removed ref to FETCH_MODE in next line
760 $sql = "SELECT $want.id AS id, $want.pagename AS pagename, "
761 . ($want_relations ? " related.pagename as linkrelation" : " $want.hits AS hits")
763 . (!$include_empty ? "$nonempty_tbl, " : '')
764 . " $page_tbl linkee, $page_tbl linker, $link_tbl "
765 . ($want_relations ? " JOIN $page_tbl related ON ($link_tbl.relation=related.id)" : '')
766 . " WHERE linkfrom=linker.id AND linkto=linkee.id"
767 . " AND $have.pagename=$qpagename"
768 . (!$include_empty ? " AND $nonempty_tbl.id=$want.id" : "")
769 //. " GROUP BY $want.id"
773 echo "SELECT linkee.id AS id, linkee.pagename AS pagename, related.pagename as linkrelation FROM link, page linkee, page linker JOIN page related ON (link.relation=related.id) WHERE linkfrom=linker.id AND linkto=linkee.id AND linker.pagename='SanDiego'" | mysql phpwiki
774 id pagename linkrelation
775 2268 California located_in
778 // extract from,count from limit
779 list($offset,$count) = $this->limit($limit);
780 $result = $dbh->SelectLimit($sql, $count, $offset);
782 $result = $dbh->Execute($sql);
784 $fields = $this->links_field_list;
785 if ($want_relations) // instead of hits
786 $fields[2] = 'linkrelation';
787 return new WikiDB_backend_ADODB_iter($this, $result, $fields);
791 * Find if a page links to another page
793 function exists_link($pagename, $link, $reversed=false) {
795 extract($this->_table_names);
798 list($have, $want) = array('linkee', 'linker');
800 list($have, $want) = array('linker', 'linkee');
801 $qpagename = $dbh->qstr($pagename);
802 $qlink = $dbh->qstr($link);
803 $row = $dbh->GetRow("SELECT CASE WHEN $want.pagename THEN 1 ELSE 0 END"
804 . " FROM $link_tbl, $page_tbl linker, $page_tbl linkee, $nonempty_tbl"
805 . " WHERE linkfrom=linker.id AND linkto=linkee.id"
806 . " AND $have.pagename=$qpagename"
807 . " AND $want.pagename=$qlink");
814 function get_all_pages($include_empty=false, $sortby=false, $limit=false, $exclude='') {
816 extract($this->_table_names);
817 $orderby = $this->sortby($sortby, 'db');
818 if ($orderby) $orderby = ' ORDER BY ' . $orderby;
819 if ($exclude) // array of pagenames
820 $exclude = " AND $page_tbl.pagename NOT IN ".$this->_sql_set($exclude);
824 //$dbh->SetFetchMode(ADODB_FETCH_ASSOC);
825 if (strstr($orderby, 'mtime ')) { // was ' mtime'
826 if ($include_empty) {
828 . $this->page_tbl_fields
829 ." FROM $page_tbl, $recent_tbl, $version_tbl"
830 . " WHERE $page_tbl.id=$recent_tbl.id"
831 . " AND $page_tbl.id=$version_tbl.id AND latestversion=version"
837 . $this->page_tbl_fields
838 . " FROM $nonempty_tbl, $page_tbl, $recent_tbl, $version_tbl"
839 . " WHERE $nonempty_tbl.id=$page_tbl.id"
840 . " AND $page_tbl.id=$recent_tbl.id"
841 . " AND $page_tbl.id=$version_tbl.id AND latestversion=version"
846 if ($include_empty) {
848 . $this->page_tbl_fields
850 . ($exclude ? " WHERE $exclude" : '')
854 . $this->page_tbl_fields
855 . " FROM $nonempty_tbl, $page_tbl"
856 . " WHERE $nonempty_tbl.id=$page_tbl.id"
862 // extract from,count from limit
863 list($offset,$count) = $this->limit($limit);
864 $result = $dbh->SelectLimit($sql, $count, $offset);
866 $result = $dbh->Execute($sql);
868 //$dbh->SetFetchMode(ADODB_FETCH_NUM);
869 return new WikiDB_backend_ADODB_iter($this, $result, $this->page_tbl_field_list);
873 * Title and fulltext search.
875 function text_search($search, $fullsearch=false,
876 $sortby=false, $limit=false, $exclude=false)
879 extract($this->_table_names);
880 $orderby = $this->sortby($sortby, 'db');
881 if ($orderby) $orderby = ' ORDER BY ' . $orderby;
883 $table = "$nonempty_tbl, $page_tbl";
884 $join_clause = "$nonempty_tbl.id=$page_tbl.id";
885 $fields = $this->page_tbl_fields;
886 $field_list = $this->page_tbl_field_list;
887 $searchobj = new WikiDB_backend_ADODB_search($search, $dbh);
890 $table .= ", $recent_tbl";
891 $join_clause .= " AND $page_tbl.id=$recent_tbl.id";
893 $table .= ", $version_tbl";
894 $join_clause .= " AND $page_tbl.id=$version_tbl.id AND latestversion=version";
896 $fields .= ",$page_tbl.pagedata as pagedata," . $this->version_tbl_fields;
897 $field_list = array_merge($field_list, array('pagedata'),
898 $this->version_tbl_field_list);
899 $callback = new WikiMethodCb($searchobj, "_fulltext_match_clause");
901 $callback = new WikiMethodCb($searchobj, "_pagename_match_clause");
904 $search_clause = $search->makeSqlClauseObj($callback);
905 $sql = "SELECT $fields FROM $table"
906 . " WHERE $join_clause"
907 . " AND ($search_clause)"
910 // extract from,count from limit
911 list($offset,$count) = $this->limit($limit);
912 $result = $dbh->SelectLimit($sql, $count, $offset);
914 $result = $dbh->Execute($sql);
916 $iter = new WikiDB_backend_ADODB_iter($this, $result, $field_list);
918 $iter->stoplisted = $searchobj->stoplisted;
923 * TODO: efficiently handle wildcards exclusion: exclude=Php* => 'Php%',
924 * not sets. See above, but the above methods find too much.
925 * This is only for already resolved wildcards:
926 * " WHERE $page_tbl.pagename NOT IN ".$this->_sql_set(array('page1','page2'));
928 function _sql_set(&$pagenames) {
930 foreach ($pagenames as $p) {
931 $s .= ($this->_dbh->qstr($p).",");
933 return substr($s,0,-1).")";
937 * Find highest or lowest hit counts.
939 function most_popular($limit=20, $sortby='-hits') {
941 extract($this->_table_names);
948 $where = " AND hits > 0";
950 if ($sortby != '-hits') {
951 if ($order = $this->sortby($sortby, 'db')) $orderby = " ORDER BY " . $order;
954 $orderby = " ORDER BY hits $order";
956 . $this->page_tbl_fields
957 . " FROM $nonempty_tbl, $page_tbl"
958 . " WHERE $nonempty_tbl.id=$page_tbl.id"
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, $this->page_tbl_field_list);
972 * Find recent changes.
974 function most_recent($params) {
977 $include_minor_revisions = false;
978 $exclude_major_revisions = false;
979 $include_all_revisions = false;
983 extract($this->_table_names);
987 $pick[] = "mtime >= $since";
989 if ($include_all_revisions) {
990 // Include all revisions of each page.
991 $table = "$page_tbl, $version_tbl";
992 $join_clause = "$page_tbl.id=$version_tbl.id";
994 if ($exclude_major_revisions) {
995 // Include only minor revisions
996 $pick[] = "minor_edit <> 0";
998 elseif (!$include_minor_revisions) {
999 // Include only major revisions
1000 $pick[] = "minor_edit = 0";
1004 $table = "$page_tbl, $recent_tbl";
1005 $join_clause = "$page_tbl.id=$recent_tbl.id";
1006 $table .= ", $version_tbl";
1007 $join_clause .= " AND $version_tbl.id=$page_tbl.id";
1009 if ($exclude_major_revisions) {
1010 // Include only most recent minor revision
1011 $pick[] = 'version=latestminor';
1013 elseif (!$include_minor_revisions) {
1014 // Include only most recent major revision
1015 $pick[] = 'version=latestmajor';
1018 // Include only the latest revision (whether major or minor).
1019 $pick[] ='version=latestversion';
1027 $where_clause = $join_clause;
1029 $where_clause .= " AND " . join(" AND ", $pick);
1031 . $this->page_tbl_fields . ", " . $this->version_tbl_fields
1033 . " WHERE $where_clause"
1034 . " ORDER BY mtime $order";
1035 // FIXME: use SQL_BUFFER_RESULT for mysql?
1037 // extract from,count from limit
1038 list($offset,$count) = $this->limit($limit);
1039 $result = $dbh->SelectLimit($sql, $count, $offset);
1041 $result = $dbh->Execute($sql);
1043 //$result->fields['version'] = $result->fields[6];
1044 return new WikiDB_backend_ADODB_iter($this, $result,
1045 array_merge($this->page_tbl_field_list, $this->version_tbl_field_list));
1049 * Find referenced empty pages.
1051 function wanted_pages($exclude_from='', $exclude='', $sortby=false, $limit=false) {
1052 $dbh = &$this->_dbh;
1053 extract($this->_table_names);
1054 if ($orderby = $this->sortby($sortby, 'db', array('pagename','wantedfrom')))
1055 $orderby = 'ORDER BY ' . $orderby;
1057 if ($exclude_from) // array of pagenames
1058 $exclude_from = " AND pp.pagename NOT IN ".$this->_sql_set($exclude_from);
1059 if ($exclude) // array of pagenames
1060 $exclude = " AND p.pagename NOT IN ".$this->_sql_set($exclude);
1063 all empty pages, independent of linkstatus:
1064 select pagename as empty from page left join nonempty using(id) where is null(nonempty.id);
1065 only all empty pages, which have a linkto:
1066 select page.pagename, linked.pagename as wantedfrom from link, page linked
1067 left join page on link.linkto=page.id left join nonempty on link.linkto=nonempty.id
1068 where nonempty.id is null and linked.id=link.linkfrom;
1070 $sql = "SELECT p.pagename, pp.pagename as wantedfrom"
1071 . " FROM $page_tbl p JOIN $link_tbl linked "
1072 . " LEFT JOIN $page_tbl pp ON linked.linkto = pp.id"
1073 . " LEFT JOIN $nonempty_tbl ne ON linked.linkto = ne.id"
1074 . " WHERE ne.id is NULL"
1075 . " AND p.id = linked.linkfrom"
1080 // extract from,count from limit
1081 list($offset,$count) = $this->limit($limit);
1082 $result = $dbh->SelectLimit($sql, $count, $offset);
1084 $result = $dbh->Execute($sql);
1086 return new WikiDB_backend_ADODB_iter($this, $result, array('pagename','wantedfrom'));
1090 * Rename page in the database.
1092 function rename_page($pagename, $to) {
1093 $dbh = &$this->_dbh;
1094 extract($this->_table_names);
1096 $this->lock(array('page','version','recent','nonempty','link'));
1097 if ( ($id = $this->_get_pageid($pagename, false)) ) {
1098 if ($new = $this->_get_pageid($to, false)) {
1100 // This page does not exist (already verified before), but exists in the page table.
1101 // So we delete this page.
1102 $dbh->query("DELETE FROM $page_tbl WHERE id=$new");
1103 $dbh->query("DELETE FROM $version_tbl WHERE id=$new");
1104 $dbh->query("DELETE FROM $recent_tbl WHERE id=$new");
1105 $dbh->query("DELETE FROM $nonempty_tbl WHERE id=$new");
1106 // We have to fix all referring tables to the old id
1107 $dbh->query("UPDATE $link_tbl SET linkfrom=$id WHERE linkfrom=$new");
1108 $dbh->query("UPDATE $link_tbl SET linkto=$id WHERE linkto=$new");
1110 $dbh->query(sprintf("UPDATE $page_tbl SET pagename=%s WHERE id=$id",
1113 $this->unlock(array('page'));
1117 function _update_recent_table($pageid = false) {
1118 $dbh = &$this->_dbh;
1119 extract($this->_table_names);
1120 extract($this->_expressions);
1122 $pageid = (int)$pageid;
1124 // optimize: mysql can do this with one REPLACE INTO.
1125 $backend_type = $this->backendType();
1126 if (substr($backend_type,0,5) == 'mysql') {
1127 $dbh->Execute("REPLACE INTO $recent_tbl"
1128 . " (id, latestversion, latestmajor, latestminor)"
1129 . " SELECT id, $maxversion, $maxmajor, $maxminor"
1130 . " FROM $version_tbl"
1131 . ( $pageid ? " WHERE id=$pageid" : "")
1134 $this->lock(array('recent'));
1135 $dbh->Execute("DELETE FROM $recent_tbl"
1136 . ( $pageid ? " WHERE id=$pageid" : ""));
1137 $dbh->Execute( "INSERT INTO $recent_tbl"
1138 . " (id, latestversion, latestmajor, latestminor)"
1139 . " SELECT id, $maxversion, $maxmajor, $maxminor"
1140 . " FROM $version_tbl"
1141 . ( $pageid ? " WHERE id=$pageid" : "")
1143 $this->unlock(array('recent'));
1147 function _update_nonempty_table($pageid = false) {
1148 $dbh = &$this->_dbh;
1149 extract($this->_table_names);
1150 extract($this->_expressions);
1152 $pageid = (int)$pageid;
1154 extract($this->_expressions);
1155 $this->lock(array('nonempty'));
1156 $dbh->Execute("DELETE FROM $nonempty_tbl"
1157 . ( $pageid ? " WHERE id=$pageid" : ""));
1158 $dbh->Execute("INSERT INTO $nonempty_tbl (id)"
1159 . " SELECT $recent_tbl.id"
1160 . " FROM $recent_tbl, $version_tbl"
1161 . " WHERE $recent_tbl.id=$version_tbl.id"
1162 . " AND version=latestversion"
1163 // We have some specifics here (Oracle)
1164 //. " AND content<>''"
1165 . " AND content $notempty" // On Oracle not just "<>''"
1166 . ( $pageid ? " AND $recent_tbl.id=$pageid" : ""));
1167 $this->unlock(array('nonempty'));
1171 * Grab a write lock on the tables in the SQL database.
1173 * Calls can be nested. The tables won't be unlocked until
1174 * _unlock_database() is called as many times as _lock_database().
1178 function lock($tables, $write_lock = true) {
1179 $this->_dbh->StartTrans();
1180 if ($this->_lock_count++ == 0) {
1181 $this->_current_lock = $tables;
1182 $this->_lock_tables($tables, $write_lock);
1187 * Overridden by non-transaction safe backends.
1189 function _lock_tables($tables, $write_lock) {
1190 return $this->_current_lock;
1194 * Release a write lock on the tables in the SQL database.
1198 * @param $force boolean Unlock even if not every call to lock() has been matched
1199 * by a call to unlock().
1201 * @see _lock_database
1203 function unlock($tables = false, $force = false) {
1204 if ($this->_lock_count == 0) {
1205 $this->_dbh->CompleteTrans(! $force);
1206 $this->_current_lock = false;
1209 if (--$this->_lock_count <= 0 || $force) {
1210 $this->_unlock_tables($tables, $force);
1211 $this->_current_lock = false;
1212 $this->_lock_count = 0;
1214 $this->_dbh->CompleteTrans(! $force);
1218 * overridden by non-transaction safe backends
1220 function _unlock_tables($tables, $write_lock=false) {
1227 function _serialize($data) {
1230 assert(is_array($data));
1231 return serialize($data);
1237 function _unserialize($data) {
1238 return empty($data) ? array() : unserialize($data);
1241 /* some variables and functions for DB backend abstraction (action=upgrade) */
1242 function database () {
1243 return $this->_dbh->database;
1245 function backendType() {
1246 return $this->_dbh->databaseType;
1248 function connection() {
1249 return $this->_dbh->_connectionID;
1251 function getRow($query) {
1252 return $this->_dbh->getRow($query);
1255 function listOfTables() {
1256 return $this->_dbh->MetaTables();
1259 // other database needs another connection and other privileges.
1260 function listOfFields($database, $table) {
1261 $field_list = array();
1262 $old_db = $this->database();
1263 if ($database != $old_db) {
1264 $conn = $this->_dbh->Connect($this->_parsedDSN['hostspec'],
1265 DBADMIN_USER ? DBADMIN_USER : $this->_parsedDSN['username'],
1266 DBADMIN_PASSWD ? DBADMIN_PASSWD : $this->_parsedDSN['password'],
1269 foreach ($this->_dbh->MetaColumns($table, false) as $field) {
1270 $field_list[] = $field->name;
1272 if ($database != $old_db) {
1273 $this->_dbh->close();
1274 $conn = $this->_dbh->Connect($this->_parsedDSN['hostspec'],
1275 $this->_parsedDSN['username'],
1276 $this->_parsedDSN['password'],
1284 class WikiDB_backend_ADODB_generic_iter
1285 extends WikiDB_backend_iterator
1287 function WikiDB_backend_ADODB_generic_iter($backend, $query_result, $field_list = NULL) {
1288 $this->_backend = &$backend;
1289 $this->_result = $query_result;
1291 if (is_null($field_list)) {
1292 // No field list passed, retrieve from DB
1293 // WikiLens is using the iterator behind the scene
1294 $field_list = array();
1295 $fields = $query_result->FieldCount();
1296 for ($i = 0; $i < $fields ; $i++) {
1297 $field_info = $query_result->FetchField($i);
1298 array_push($field_list, $field_info->name);
1302 $this->_fields = $field_list;
1306 if (!$this->_result) {
1309 $count = $this->_result->numRows();
1310 //$this->_result->Close();
1315 $result = &$this->_result;
1316 $backend = &$this->_backend;
1317 if (!$result || $result->EOF) {
1322 // Convert array to hash
1324 $rec_num = $result->fields;
1325 foreach ($this->_fields as $field) {
1326 $rec_assoc[$field] = $rec_num[$i++];
1328 // check if the cache can be populated here?
1330 $result->MoveNext();
1335 if ($this->_result) {
1336 /* call mysql_free_result($this->_queryID) */
1337 $this->_result->Close();
1338 $this->_result = false;
1343 class WikiDB_backend_ADODB_iter
1344 extends WikiDB_backend_ADODB_generic_iter
1347 $result = &$this->_result;
1348 $backend = &$this->_backend;
1349 if (!$result || $result->EOF) {
1354 // Convert array to hash
1356 $rec_num = $result->fields;
1357 foreach ($this->_fields as $field) {
1358 $rec_assoc[$field] = $rec_num[$i++];
1361 $result->MoveNext();
1362 if (isset($rec_assoc['pagedata']))
1363 $rec_assoc['pagedata'] = $backend->_extract_page_data($rec_assoc['pagedata'], $rec_assoc['hits']);
1364 if (!empty($rec_assoc['version'])) {
1365 $rec_assoc['versiondata'] = $backend->_extract_version_data_assoc($rec_assoc);
1367 if (!empty($rec_assoc['linkrelation'])) {
1368 $rec_assoc['linkrelation'] = $rec_assoc['linkrelation']; // pagename enough?
1374 class WikiDB_backend_ADODB_search extends WikiDB_backend_search_sql
1376 // no surrounding quotes because we know it's a string
1377 // function _quote($word) { return $this->_dbh->escapeSimple($word); }
1380 // Following function taken from Pear::DB (prev. from adodb-pear.inc.php).
1381 // Eventually, change index.php to provide the relevant information
1384 * Parse a data source name.
1386 * Additional keys can be added by appending a URI query string to the
1389 * The format of the supplied DSN is in its fullest form:
1391 * phptype(dbsyntax)://username:password@protocol+hostspec/database?option=8&another=true
1394 * Most variations are allowed:
1396 * phptype://username:password@protocol+hostspec:110//usr/db_file.db?mode=0644
1397 * phptype://username:password@hostspec/database_name
1398 * phptype://username:password@hostspec
1399 * phptype://username@hostspec
1400 * phptype://hostspec/database
1401 * phptype://hostspec
1406 * @param string $dsn Data Source Name to be parsed
1408 * @return array an associative array with the following keys:
1409 * + phptype: Database backend used in PHP (mysql, odbc etc.)
1410 * + dbsyntax: Database used with regards to SQL syntax etc.
1411 * + protocol: Communication protocol to use (tcp, unix etc.)
1412 * + hostspec: Host specification (hostname[:port])
1413 * + database: Database to use on the DBMS server
1414 * + username: User name for login
1415 * + password: Password for login
1417 * @author Tomas V.V.Cox <cox@idecnet.com>
1419 function parseDSN($dsn)
1423 'dbsyntax' => false,
1424 'username' => false,
1425 'password' => false,
1426 'protocol' => false,
1427 'hostspec' => false,
1430 'database' => false,
1433 if (is_array($dsn)) {
1434 $dsn = array_merge($parsed, $dsn);
1435 if (!$dsn['dbsyntax']) {
1436 $dsn['dbsyntax'] = $dsn['phptype'];
1441 // Find phptype and dbsyntax
1442 if (($pos = strpos($dsn, '://')) !== false) {
1443 $str = substr($dsn, 0, $pos);
1444 $dsn = substr($dsn, $pos + 3);
1450 // Get phptype and dbsyntax
1451 // $str => phptype(dbsyntax)
1452 if (preg_match('|^(.+?)\((.*?)\)$|', $str, $arr)) {
1453 $parsed['phptype'] = $arr[1];
1454 $parsed['dbsyntax'] = !$arr[2] ? $arr[1] : $arr[2];
1456 $parsed['phptype'] = $str;
1457 $parsed['dbsyntax'] = $str;
1464 // Get (if found): username and password
1465 // $dsn => username:password@protocol+hostspec/database
1466 if (($at = strrpos($dsn,'@')) !== false) {
1467 $str = substr($dsn, 0, $at);
1468 $dsn = substr($dsn, $at + 1);
1469 if (($pos = strpos($str, ':')) !== false) {
1470 $parsed['username'] = rawurldecode(substr($str, 0, $pos));
1471 $parsed['password'] = rawurldecode(substr($str, $pos + 1));
1473 $parsed['username'] = rawurldecode($str);
1477 // Find protocol and hostspec
1479 // $dsn => proto(proto_opts)/database
1480 if (preg_match('|^([^(]+)\((.*?)\)/?(.*?)$|', $dsn, $match)) {
1482 $proto_opts = $match[2] ? $match[2] : false;
1485 // $dsn => protocol+hostspec/database (old format)
1487 if (strpos($dsn, '+') !== false) {
1488 list($proto, $dsn) = explode('+', $dsn, 2);
1490 if (strpos($dsn, '/') !== false) {
1491 list($proto_opts, $dsn) = explode('/', $dsn, 2);
1498 // process the different protocol options
1499 $parsed['protocol'] = (!empty($proto)) ? $proto : 'tcp';
1500 $proto_opts = rawurldecode($proto_opts);
1501 if ($parsed['protocol'] == 'tcp') {
1502 if (strpos($proto_opts, ':') !== false) {
1503 list($parsed['hostspec'], $parsed['port']) = explode(':', $proto_opts);
1505 $parsed['hostspec'] = $proto_opts;
1507 } elseif ($parsed['protocol'] == 'unix') {
1508 $parsed['socket'] = $proto_opts;
1511 // Get dabase if any
1515 if (($pos = strpos($dsn, '?')) === false) {
1516 $parsed['database'] = $dsn;
1517 // /database?param1=value1¶m2=value2
1519 $parsed['database'] = substr($dsn, 0, $pos);
1520 $dsn = substr($dsn, $pos + 1);
1521 if (strpos($dsn, '&') !== false) {
1522 $opts = explode('&', $dsn);
1523 } else { // database?param1=value1
1524 $opts = array($dsn);
1526 foreach ($opts as $opt) {
1527 list($key, $value) = explode('=', $opt);
1528 if (!isset($parsed[$key])) {
1529 // don't allow params overwrite
1530 $parsed[$key] = rawurldecode($value);
1539 // $Log: not supported by cvs2svn $
1540 // Revision 1.90 2006/09/06 05:50:19 rurban
1541 // please XEmacs font-lock
1543 // Revision 1.89 2006/06/10 11:59:46 rurban
1544 // purge empty, non-references pages when link is deleted
1546 // Revision 1.88 2006/05/14 12:28:03 rurban
1547 // mysql 5.x fix for wantedpages join
1549 // Revision 1.87 2006/04/17 17:28:21 rurban
1550 // honor getWikiPageLinks change linkto=>relation
1552 // Revision 1.86 2006/04/17 10:02:44 rurban
1553 // fix syntax error missing }
1555 // Revision 1.85 2006/04/15 12:48:04 rurban
1556 // use genID, dont lock here
1558 // Revision 1.84 2006/02/22 21:49:50 rurban
1559 // Remove hits from links query
1560 // force old set_links method. need to test IS NULL
1562 // Revision 1.83 2005/11/14 22:24:33 rurban
1563 // fix fulltext search,
1564 // Eliminate stoplist words,
1565 // don't extract %pagedate twice in ADODB,
1566 // add SemanticWeb support: link(relation),
1567 // major postgresql update: stored procedures, tsearch2 for fulltext
1569 // Revision 1.82 2005/10/31 16:48:22 rurban
1570 // move mysql-specifics into its special class
1572 // Revision 1.81 2005/10/10 19:42:14 rurban
1573 // fix wanted_pages SQL syntax
1575 // Revision 1.80 2005/09/28 19:26:05 rurban
1576 // working on improved postgresql support: better quoting, bytea support
1578 // Revision 1.79 2005/09/28 19:08:41 rurban
1579 // dont use LIMIT on modifying queries
1581 // Revision 1.78 2005/09/14 06:04:43 rurban
1582 // optimize searching for ALL (ie %), use the stoplist on PDO
1584 // Revision 1.77 2005/09/11 14:55:05 rurban
1585 // implement fulltext stoplist
1587 // Revision 1.76 2005/09/11 13:25:12 rurban
1588 // enhance LIMIT support
1590 // Revision 1.75 2005/09/10 21:30:16 rurban
1591 // enhance titleSearch
1593 // Revision 1.74 2005/02/10 19:04:22 rurban
1594 // move getRow up one level to our backend class
1596 // Revision 1.73 2005/02/04 13:43:30 rurban
1597 // fix purge cache error
1599 // Revision 1.72 2005/01/29 19:51:03 rurban
1600 // Bugs item #1077769 fixed by frugal.
1601 // Deleted the wrong page. Fix all other tables also.
1603 // Revision 1.71 2005/01/25 08:01:00 rurban
1604 // fix listOfFields with different database
1606 // Revision 1.70 2005/01/18 20:55:43 rurban
1607 // reformatting and two bug fixes: adding missing parens
1609 // Revision 1.69 2004/12/26 17:14:03 rurban
1610 // fix ADODB MostPopular, avoid limit -1, pass hits on empty data
1612 // Revision 1.68 2004/12/22 18:33:25 rurban
1613 // fix page _id_cache logic for _get_pageid create_if_missing
1615 // Revision 1.67 2004/12/22 15:47:41 rurban
1616 // fix wrong _update_nonempty_table on empty content (i.e. the new deletePage)
1618 // Revision 1.66 2004/12/13 14:39:16 rurban
1621 // Revision 1.65 2004/12/10 22:15:00 rurban
1622 // fix $page->get('_cached_html)
1623 // refactor upgrade db helper _convert_cached_html() to be able to call them from WikiAdminUtils also.
1624 // support 2nd genericSqlQuery param (bind huge arg)
1626 // Revision 1.64 2004/12/10 02:45:27 rurban
1627 // SQL optimization:
1628 // put _cached_html from pagedata into a new seperate blob, not huge serialized string.
1629 // it is only rarelely needed: for current page only, if-not-modified
1630 // but was extracted for every simple page iteration.
1632 // Revision 1.63 2004/12/08 12:55:51 rurban
1633 // support new non-destructive delete_page via generic backend method
1635 // Revision 1.62 2004/12/06 19:50:04 rurban
1636 // enable action=remove which is undoable and seeable in RecentChanges: ADODB ony for now.
1637 // renamed delete_page to purge_page.
1638 // enable action=edit&version=-1 to force creation of a new version.
1639 // added BABYCART_PATH config
1640 // fixed magiqc in adodb.inc.php
1641 // and some more docs
1643 // Revision 1.61 2004/11/30 17:45:53 rurban
1644 // exists_links backend implementation
1646 // Revision 1.60 2004/11/28 20:42:18 rurban
1647 // Optimize PearDB _extract_version_data and _extract_page_data.
1649 // Revision 1.59 2004/11/27 14:39:05 rurban
1650 // simpified regex search architecture:
1651 // no db specific node methods anymore,
1652 // new sql() method for each node
1653 // parallel to regexp() (which returns pcre)
1654 // regex types bitmasked (op's not yet)
1656 // clarified WikiDB::quote() backend methods:
1657 // ->quote() adds surrounsing quotes
1658 // ->qstr() (new method) assumes strings and adds no quotes! (in contrast to ADODB)
1659 // pear and adodb have now unified quote methods for all generic queries.
1661 // Revision 1.58 2004/11/26 18:39:02 rurban
1662 // new regex search parser and SQL backends (90% complete, glob and pcre backends missing)
1664 // Revision 1.57 2004/11/25 17:20:51 rurban
1665 // and again a couple of more native db args: backlinks
1667 // Revision 1.56 2004/11/23 13:35:48 rurban
1668 // add case_exact search
1670 // Revision 1.55 2004/11/21 11:59:26 rurban
1671 // remove final \n to be ob_cache independent
1673 // Revision 1.54 2004/11/20 17:49:39 rurban
1674 // add fast exclude support to SQL get_all_pages
1676 // Revision 1.53 2004/11/20 17:35:58 rurban
1677 // improved WantedPages SQL backends
1678 // PageList::sortby new 3rd arg valid_fields (override db fields)
1679 // WantedPages sql pager inexact for performance reasons:
1680 // assume 3 wantedfrom per page, to be correct, no getTotal()
1681 // support exclude argument for get_all_pages, new _sql_set()
1683 // Revision 1.52 2004/11/17 20:07:17 rurban
1686 // Revision 1.51 2004/11/15 15:57:37 rurban
1687 // silent cache warning
1689 // Revision 1.50 2004/11/10 19:32:23 rurban
1690 // * optimize increaseHitCount, esp. for mysql.
1691 // * prepend dirs to the include_path (phpwiki_dir for faster searches)
1692 // * Pear_DB version logic (awful but needed)
1693 // * fix broken ADODB quote
1694 // * _extract_page_data simplification
1696 // Revision 1.49 2004/11/10 15:29:21 rurban
1697 // * requires newer Pear_DB (as the internal one): quote() uses now escapeSimple for strings
1698 // * ACCESS_LOG_SQL: fix cause request not yet initialized
1699 // * WikiDB: moved SQL specific methods upwards
1700 // * new Pear_DB quoting: same as ADODB and as newer Pear_DB.
1701 // fixes all around: WikiGroup, WikiUserNew SQL methods, SQL logging
1703 // Revision 1.48 2004/11/09 17:11:16 rurban
1704 // * revert to the wikidb ref passing. there's no memory abuse there.
1705 // * use new wikidb->_cache->_id_cache[] instead of wikidb->_iwpcache, to effectively
1706 // store page ids with getPageLinks (GleanDescription) of all existing pages, which
1707 // are also needed at the rendering for linkExistingWikiWord().
1708 // pass options to pageiterator.
1709 // use this cache also for _get_pageid()
1710 // This saves about 8 SELECT count per page (num all pagelinks).
1711 // * fix passing of all page fields to the pageiterator.
1712 // * fix overlarge session data which got broken with the latest ACCESS_LOG_SQL changes
1714 // Revision 1.47 2004/11/06 17:11:42 rurban
1715 // The optimized version doesn't query for pagedata anymore.
1717 // Revision 1.46 2004/11/01 10:43:58 rurban
1718 // seperate PassUser methods into seperate dir (memory usage)
1719 // fix WikiUser (old) overlarge data session
1720 // remove wikidb arg from various page class methods, use global ->_dbi instead
1723 // Revision 1.45 2004/10/14 17:19:17 rurban
1724 // allow most_popular sortby arguments
1726 // Revision 1.44 2004/09/06 08:33:09 rurban
1727 // force explicit mysql auto-incrementing, atomic version
1729 // Revision 1.43 2004/07/10 08:50:24 rurban
1730 // applied patch by Philippe Vanhaesendonck:
1731 // pass column list to iterators so we can FETCH_NUM in all cases.
1732 // bind UPDATE pramas for huge pagedata.
1733 // portable oracle backend
1735 // Revision 1.42 2004/07/09 10:06:50 rurban
1736 // Use backend specific sortby and sortable_columns method, to be able to
1737 // select between native (Db backend) and custom (PageList) sorting.
1738 // Fixed PageList::AddPageList (missed the first)
1739 // Added the author/creator.. name to AllPagesBy...
1740 // display no pages if none matched.
1741 // Improved dba and file sortby().
1742 // Use &$request reference
1744 // Revision 1.41 2004/07/08 21:32:35 rurban
1745 // Prevent from more warnings, minor db and sort optimizations
1747 // Revision 1.40 2004/07/08 16:56:16 rurban
1748 // use the backendType abstraction
1750 // Revision 1.39 2004/07/05 13:56:22 rurban
1751 // sqlite autoincrement fix
1753 // Revision 1.38 2004/07/05 12:57:54 rurban
1754 // add mysql timeout
1756 // Revision 1.37 2004/07/04 10:24:43 rurban
1757 // forgot the expressions
1759 // Revision 1.36 2004/07/03 16:51:06 rurban
1760 // optional DBADMIN_USER:DBADMIN_PASSWD for action=upgrade (if no ALTER permission)
1761 // added atomic mysql REPLACE for PearDB as in ADODB
1762 // fixed _lock_tables typo links => link
1763 // fixes unserialize ADODB bug in line 180
1765 // Revision 1.35 2004/06/28 14:45:12 rurban
1766 // fix adodb_sqlite to have the same dsn syntax as pear, use pconnect if requested
1768 // Revision 1.34 2004/06/28 14:17:38 rurban
1769 // updated DSN parser from Pear. esp. for sqlite
1771 // Revision 1.33 2004/06/27 10:26:02 rurban
1772 // oci8 patch by Philippe Vanhaesendonck + some ADODB notes+fixes
1774 // Revision 1.32 2004/06/25 14:15:08 rurban
1775 // reduce memory footprint by caching only requested pagedate content (improving most page iterators)
1777 // Revision 1.31 2004/06/16 10:38:59 rurban
1778 // Disallow refernces in calls if the declaration is a reference
1779 // ("allow_call_time_pass_reference clean").
1780 // PhpWiki is now allow_call_time_pass_reference = Off clean,
1781 // but several external libraries may not.
1782 // In detail these libs look to be affected (not tested):
1786 // Revision 1.30 2004/06/07 19:31:31 rurban
1787 // fixed ADOOB upgrade: listOfFields()
1789 // Revision 1.29 2004/05/12 10:49:55 rurban
1790 // require_once fix for those libs which are loaded before FileFinder and
1791 // its automatic include_path fix, and where require_once doesn't grok
1792 // dirname(__FILE__) != './lib'
1793 // upgrade fix with PearDB
1794 // navbar.tmpl: remove spaces for IE button alignment
1796 // Revision 1.28 2004/05/06 19:26:16 rurban
1797 // improve stability, trying to find the InlineParser endless loop on sf.net
1799 // remove end-of-zip comments to fix sf.net bug #777278 and probably #859628
1801 // Revision 1.27 2004/05/06 17:30:38 rurban
1802 // CategoryGroup: oops, dos2unix eol
1803 // improved phpwiki_version:
1804 // pre -= .0001 (1.3.10pre: 1030.099)
1805 // -p1 += .001 (1.3.9-p1: 1030.091)
1806 // improved InstallTable for mysql and generic SQL versions and all newer tables so far.
1807 // abstracted more ADODB/PearDB methods for action=upgrade stuff:
1808 // backend->backendType(), backend->database(),
1809 // backend->listOfFields(),
1810 // backend->listOfTables(),
1812 // Revision 1.26 2004/04/26 20:44:35 rurban
1813 // locking table specific for better databases
1815 // Revision 1.25 2004/04/20 00:06:04 rurban
1816 // themable paging support
1818 // Revision 1.24 2004/04/18 01:34:20 rurban
1819 // protect most_popular from sortby=mtime
1821 // Revision 1.23 2004/04/16 14:19:39 rurban
1822 // updated ADODB notes
1825 // (c-file-style: "gnu")
1829 // c-basic-offset: 4
1830 // c-hanging-comment-ender-p: nil
1831 // indent-tabs-mode: nil