MediaWiki REL1_27
ParserOutput.php
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1<?php
2
24class ParserOutput extends CacheTime {
28 public $mText;
29
35
40
44 public $mIndicators = [];
45
50
55 public $mLinks = [];
56
61 public $mTemplates = [];
62
67 public $mTemplateIds = [];
68
72 public $mImages = [];
73
78
82 public $mExternalLinks = [];
83
88 public $mInterwikiLinks = [];
89
93 public $mNewSection = false;
94
98 public $mHideNewSection = false;
99
103 public $mNoGallery = false;
104
108 public $mHeadItems = [];
109
113 public $mModules = [];
114
118 public $mModuleScripts = [];
119
123 public $mModuleStyles = [];
124
128 public $mJsConfigVars = [];
129
133 public $mOutputHooks = [];
134
139 public $mWarnings = [];
140
144 public $mSections = [];
145
149 public $mEditSectionTokens = false;
150
154 public $mProperties = [];
155
159 public $mTOCHTML = '';
160
165
169 public $mTOCEnabled = true;
170
174 public $mEnableOOUI = false;
175
179 private $mIndexPolicy = '';
180
184 private $mAccessedOptions = [];
185
189 private $mExtensionData = [];
190
194 private $mLimitReportData = [];
195
199 private $mParseStartTime = [];
200
204 private $mPreventClickjacking = false;
205
209 private $mFlags = [];
210
212 '#<(?:mw:)?editsection page="(.*?)" section="(.*?)"(?:/>|>(.*?)(</(?:mw:)?editsection>))#';
213
214 public function __construct( $text = '', $languageLinks = [], $categoryLinks = [],
215 $unused = false, $titletext = ''
216 ) {
217 $this->mText = $text;
218 $this->mLanguageLinks = $languageLinks;
219 $this->mCategories = $categoryLinks;
220 $this->mTitleText = $titletext;
221 }
222
230 public function getRawText() {
231 return $this->mText;
232 }
233
234 public function getText() {
235 $text = $this->mText;
236 if ( $this->mEditSectionTokens ) {
237 $text = preg_replace_callback(
239 function ( $m ) {
241 $editsectionPage = Title::newFromText( htmlspecialchars_decode( $m[1] ) );
242 $editsectionSection = htmlspecialchars_decode( $m[2] );
243 $editsectionContent = isset( $m[4] ) ? $m[3] : null;
244
245 if ( !is_object( $editsectionPage ) ) {
246 throw new MWException( "Bad parser output text." );
247 }
248
249 $skin = $wgOut->getSkin();
250 return call_user_func_array(
251 [ $skin, 'doEditSectionLink' ],
252 [ $editsectionPage, $editsectionSection,
253 $editsectionContent, $wgLang->getCode() ]
254 );
255 },
256 $text
257 );
258 } else {
259 $text = preg_replace( ParserOutput::EDITSECTION_REGEX, '', $text );
260 }
261
262 // If you have an old cached version of this class - sorry, you can't disable the TOC
263 if ( isset( $this->mTOCEnabled ) && $this->mTOCEnabled ) {
264 $text = str_replace( [ Parser::TOC_START, Parser::TOC_END ], '', $text );
265 } else {
266 $text = preg_replace(
267 '#' . preg_quote( Parser::TOC_START, '#' ) . '.*?' . preg_quote( Parser::TOC_END, '#' ) . '#s',
268 '',
269 $text
270 );
271 }
272 return $text;
273 }
274
275 public function &getLanguageLinks() {
276 return $this->mLanguageLinks;
277 }
278
279 public function getInterwikiLinks() {
280 return $this->mInterwikiLinks;
281 }
282
283 public function getCategoryLinks() {
284 return array_keys( $this->mCategories );
285 }
286
287 public function &getCategories() {
288 return $this->mCategories;
289 }
290
294 public function getIndicators() {
295 return $this->mIndicators;
296 }
297
298 public function getTitleText() {
299 return $this->mTitleText;
300 }
301
302 public function getSections() {
303 return $this->mSections;
304 }
305
306 public function getEditSectionTokens() {
307 return $this->mEditSectionTokens;
308 }
309
310 public function &getLinks() {
311 return $this->mLinks;
312 }
313
314 public function &getTemplates() {
315 return $this->mTemplates;
316 }
317
318 public function &getTemplateIds() {
319 return $this->mTemplateIds;
320 }
321
322 public function &getImages() {
323 return $this->mImages;
324 }
325
326 public function &getFileSearchOptions() {
327 return $this->mFileSearchOptions;
328 }
329
330 public function &getExternalLinks() {
331 return $this->mExternalLinks;
332 }
333
334 public function getNoGallery() {
335 return $this->mNoGallery;
336 }
337
338 public function getHeadItems() {
339 return $this->mHeadItems;
340 }
341
342 public function getModules() {
343 return $this->mModules;
344 }
345
346 public function getModuleScripts() {
347 return $this->mModuleScripts;
348 }
349
350 public function getModuleStyles() {
351 return $this->mModuleStyles;
352 }
353
358 public function getModuleMessages() {
359 wfDeprecated( __METHOD__, '1.26' );
360 return [];
361 }
362
364 public function getJsConfigVars() {
365 return $this->mJsConfigVars;
366 }
367
368 public function getOutputHooks() {
369 return (array)$this->mOutputHooks;
370 }
371
372 public function getWarnings() {
373 return array_keys( $this->mWarnings );
374 }
375
376 public function getIndexPolicy() {
377 return $this->mIndexPolicy;
378 }
379
380 public function getTOCHTML() {
381 return $this->mTOCHTML;
382 }
383
387 public function getTimestamp() {
388 return $this->mTimestamp;
389 }
390
391 public function getLimitReportData() {
392 return $this->mLimitReportData;
393 }
394
395 public function getTOCEnabled() {
396 return $this->mTOCEnabled;
397 }
398
399 public function getEnableOOUI() {
400 return $this->mEnableOOUI;
401 }
402
403 public function setText( $text ) {
404 return wfSetVar( $this->mText, $text );
405 }
406
407 public function setLanguageLinks( $ll ) {
408 return wfSetVar( $this->mLanguageLinks, $ll );
409 }
410
411 public function setCategoryLinks( $cl ) {
412 return wfSetVar( $this->mCategories, $cl );
413 }
414
415 public function setTitleText( $t ) {
416 return wfSetVar( $this->mTitleText, $t );
417 }
418
419 public function setSections( $toc ) {
420 return wfSetVar( $this->mSections, $toc );
421 }
422
423 public function setEditSectionTokens( $t ) {
424 return wfSetVar( $this->mEditSectionTokens, $t );
425 }
426
427 public function setIndexPolicy( $policy ) {
428 return wfSetVar( $this->mIndexPolicy, $policy );
429 }
430
431 public function setTOCHTML( $tochtml ) {
432 return wfSetVar( $this->mTOCHTML, $tochtml );
433 }
434
435 public function setTimestamp( $timestamp ) {
436 return wfSetVar( $this->mTimestamp, $timestamp );
437 }
438
439 public function setTOCEnabled( $flag ) {
440 return wfSetVar( $this->mTOCEnabled, $flag );
441 }
442
443 public function addCategory( $c, $sort ) {
444 $this->mCategories[$c] = $sort;
445 }
446
450 public function setIndicator( $id, $content ) {
451 $this->mIndicators[$id] = $content;
452 }
453
461 public function setEnableOOUI( $enable = false ) {
462 $this->mEnableOOUI = $enable;
463 }
464
465 public function addLanguageLink( $t ) {
466 $this->mLanguageLinks[] = $t;
467 }
468
469 public function addWarning( $s ) {
470 $this->mWarnings[$s] = 1;
471 }
472
473 public function addOutputHook( $hook, $data = false ) {
474 $this->mOutputHooks[] = [ $hook, $data ];
475 }
476
477 public function setNewSection( $value ) {
478 $this->mNewSection = (bool)$value;
479 }
480 public function hideNewSection( $value ) {
481 $this->mHideNewSection = (bool)$value;
482 }
483 public function getHideNewSection() {
484 return (bool)$this->mHideNewSection;
485 }
486 public function getNewSection() {
487 return (bool)$this->mNewSection;
488 }
489
497 public static function isLinkInternal( $internal, $url ) {
498 return (bool)preg_match( '/^' .
499 # If server is proto relative, check also for http/https links
500 ( substr( $internal, 0, 2 ) === '//' ? '(?:https?:)?' : '' ) .
501 preg_quote( $internal, '/' ) .
502 # check for query/path/anchor or end of link in each case
503 '(?:[\?\/\#]|$)/i',
504 $url
505 );
506 }
507
508 public function addExternalLink( $url ) {
509 # We don't register links pointing to our own server, unless... :-)
511
512 # Replace unnecessary URL escape codes with the referenced character
513 # This prevents spammers from hiding links from the filters
514 $url = parser::normalizeLinkUrl( $url );
515
516 $registerExternalLink = true;
518 $registerExternalLink = !self::isLinkInternal( $wgServer, $url );
519 }
520 if ( $registerExternalLink ) {
521 $this->mExternalLinks[$url] = 1;
522 }
523 }
524
531 public function addLink( Title $title, $id = null ) {
532 if ( $title->isExternal() ) {
533 // Don't record interwikis in pagelinks
534 $this->addInterwikiLink( $title );
535 return;
536 }
537 $ns = $title->getNamespace();
538 $dbk = $title->getDBkey();
539 if ( $ns == NS_MEDIA ) {
540 // Normalize this pseudo-alias if it makes it down here...
541 $ns = NS_FILE;
542 } elseif ( $ns == NS_SPECIAL ) {
543 // We don't record Special: links currently
544 // It might actually be wise to, but we'd need to do some normalization.
545 return;
546 } elseif ( $dbk === '' ) {
547 // Don't record self links - [[#Foo]]
548 return;
549 }
550 if ( !isset( $this->mLinks[$ns] ) ) {
551 $this->mLinks[$ns] = [];
552 }
553 if ( is_null( $id ) ) {
554 $id = $title->getArticleID();
555 }
556 $this->mLinks[$ns][$dbk] = $id;
557 }
558
566 public function addImage( $name, $timestamp = null, $sha1 = null ) {
567 $this->mImages[$name] = 1;
568 if ( $timestamp !== null && $sha1 !== null ) {
569 $this->mFileSearchOptions[$name] = [ 'time' => $timestamp, 'sha1' => $sha1 ];
570 }
571 }
572
580 public function addTemplate( $title, $page_id, $rev_id ) {
581 $ns = $title->getNamespace();
582 $dbk = $title->getDBkey();
583 if ( !isset( $this->mTemplates[$ns] ) ) {
584 $this->mTemplates[$ns] = [];
585 }
586 $this->mTemplates[$ns][$dbk] = $page_id;
587 if ( !isset( $this->mTemplateIds[$ns] ) ) {
588 $this->mTemplateIds[$ns] = [];
589 }
590 $this->mTemplateIds[$ns][$dbk] = $rev_id; // For versioning
591 }
592
597 public function addInterwikiLink( $title ) {
598 if ( !$title->isExternal() ) {
599 throw new MWException( 'Non-interwiki link passed, internal parser error.' );
600 }
601 $prefix = $title->getInterwiki();
602 if ( !isset( $this->mInterwikiLinks[$prefix] ) ) {
603 $this->mInterwikiLinks[$prefix] = [];
604 }
605 $this->mInterwikiLinks[$prefix][$title->getDBkey()] = 1;
606 }
607
615 public function addHeadItem( $section, $tag = false ) {
616 if ( $tag !== false ) {
617 $this->mHeadItems[$tag] = $section;
618 } else {
619 $this->mHeadItems[] = $section;
620 }
621 }
622
623 public function addModules( $modules ) {
624 $this->mModules = array_merge( $this->mModules, (array)$modules );
625 }
626
627 public function addModuleScripts( $modules ) {
628 $this->mModuleScripts = array_merge( $this->mModuleScripts, (array)$modules );
629 }
630
631 public function addModuleStyles( $modules ) {
632 $this->mModuleStyles = array_merge( $this->mModuleStyles, (array)$modules );
633 }
634
639 public function addModuleMessages( $modules ) {
640 wfDeprecated( __METHOD__, '1.26' );
641 }
642
650 public function addJsConfigVars( $keys, $value = null ) {
651 if ( is_array( $keys ) ) {
652 foreach ( $keys as $key => $value ) {
653 $this->mJsConfigVars[$key] = $value;
654 }
655 return;
656 }
657
658 $this->mJsConfigVars[$keys] = $value;
659 }
660
667 $this->addModules( $out->getModules() );
668 $this->addModuleScripts( $out->getModuleScripts() );
669 $this->addModuleStyles( $out->getModuleStyles() );
670 $this->addJsConfigVars( $out->getJsConfigVars() );
671
672 $this->mHeadItems = array_merge( $this->mHeadItems, $out->getHeadItemsArray() );
673 $this->mPreventClickjacking = $this->mPreventClickjacking || $out->getPreventClickjacking();
674 }
675
690 public function addTrackingCategory( $msg, $title ) {
691 if ( $title->getNamespace() === NS_SPECIAL ) {
692 wfDebug( __METHOD__ . ": Not adding tracking category $msg to special page!\n" );
693 return false;
694 }
695
696 // Important to parse with correct title (bug 31469)
697 $cat = wfMessage( $msg )
698 ->title( $title )
699 ->inContentLanguage()
700 ->text();
701
702 # Allow tracking categories to be disabled by setting them to "-"
703 if ( $cat === '-' ) {
704 return false;
705 }
706
707 $containerCategory = Title::makeTitleSafe( NS_CATEGORY, $cat );
708 if ( $containerCategory ) {
709 $this->addCategory( $containerCategory->getDBkey(), $this->getProperty( 'defaultsort' ) ?: '' );
710 return true;
711 } else {
712 wfDebug( __METHOD__ . ": [[MediaWiki:$msg]] is not a valid title!\n" );
713 return false;
714 }
715 }
716
728 public function setDisplayTitle( $text ) {
729 $this->setTitleText( $text );
730 $this->setProperty( 'displaytitle', $text );
731 }
732
741 public function getDisplayTitle() {
742 $t = $this->getTitleText();
743 if ( $t === '' ) {
744 return false;
745 }
746 return $t;
747 }
748
753 public function setFlag( $flag ) {
754 $this->mFlags[$flag] = true;
755 }
756
757 public function getFlag( $flag ) {
758 return isset( $this->mFlags[$flag] );
759 }
760
821 public function setProperty( $name, $value ) {
822 $this->mProperties[$name] = $value;
823 }
824
833 public function getProperty( $name ) {
834 return isset( $this->mProperties[$name] ) ? $this->mProperties[$name] : false;
835 }
836
837 public function unsetProperty( $name ) {
838 unset( $this->mProperties[$name] );
839 }
840
841 public function getProperties() {
842 if ( !isset( $this->mProperties ) ) {
843 $this->mProperties = [];
844 }
845 return $this->mProperties;
846 }
847
853 public function getUsedOptions() {
854 if ( !isset( $this->mAccessedOptions ) ) {
855 return [];
856 }
857 return array_keys( $this->mAccessedOptions );
858 }
859
872 public function recordOption( $option ) {
873 $this->mAccessedOptions[$option] = true;
874 }
875
916 public function setExtensionData( $key, $value ) {
917 if ( $value === null ) {
918 unset( $this->mExtensionData[$key] );
919 } else {
920 $this->mExtensionData[$key] = $value;
921 }
922 }
923
935 public function getExtensionData( $key ) {
936 if ( isset( $this->mExtensionData[$key] ) ) {
937 return $this->mExtensionData[$key];
938 }
939
940 return null;
941 }
942
943 private static function getTimes( $clock = null ) {
944 $ret = [];
945 if ( !$clock || $clock === 'wall' ) {
946 $ret['wall'] = microtime( true );
947 }
948 if ( !$clock || $clock === 'cpu' ) {
949 $ru = wfGetRusage();
950 if ( $ru ) {
951 $ret['cpu'] = $ru['ru_utime.tv_sec'] + $ru['ru_utime.tv_usec'] / 1e6;
952 $ret['cpu'] += $ru['ru_stime.tv_sec'] + $ru['ru_stime.tv_usec'] / 1e6;
953 }
954 }
955 return $ret;
956 }
957
962 public function resetParseStartTime() {
963 $this->mParseStartTime = self::getTimes();
964 }
965
977 public function getTimeSinceStart( $clock ) {
978 if ( !isset( $this->mParseStartTime[$clock] ) ) {
979 return null;
980 }
981
982 $end = self::getTimes( $clock );
983 return $end[$clock] - $this->mParseStartTime[$clock];
984 }
985
1005 public function setLimitReportData( $key, $value ) {
1006 $this->mLimitReportData[$key] = $value;
1007 }
1008
1019 public function hasDynamicContent() {
1021
1022 return $this->getCacheExpiry() < $wgParserCacheExpireTime;
1023 }
1024
1032 public function preventClickjacking( $flag = null ) {
1033 return wfSetVar( $this->mPreventClickjacking, $flag );
1034 }
1035
1040 public function __sleep() {
1041 return array_diff(
1042 array_keys( get_object_vars( $this ) ),
1043 [ 'mParseStartTime' ]
1044 );
1045 }
1046}
Apache License January http
$wgRegisterInternalExternals
By default MediaWiki does not register links pointing to same server in externallinks dataset,...
$wgParserCacheExpireTime
The expiry time for the parser cache, in seconds.
$wgServer
URL of the server.
wfDebug( $text, $dest='all', array $context=[])
Sends a line to the debug log if enabled or, optionally, to a comment in output.
wfSetVar(&$dest, $source, $force=false)
Sets dest to source and returns the original value of dest If source is NULL, it just returns the val...
wfDeprecated( $function, $version=false, $component=false, $callerOffset=2)
Throws a warning that $function is deprecated.
wfGetRusage()
Get system resource usage of current request context.
$wgOut
Definition Setup.php:804
Parser cache specific expiry check.
Definition CacheTime.php:29
getCacheExpiry()
Returns the number of seconds after which this object should expire.
MediaWiki exception.
This class should be covered by a general architecture document which does not exist as of January 20...
addOutputPageMetadata(OutputPage $out)
Copy items from the OutputPage object into this one.
getProperty( $name)
unsetProperty( $name)
static getTimes( $clock=null)
hideNewSection( $value)
setNewSection( $value)
addOutputHook( $hook, $data=false)
setDisplayTitle( $text)
Override the title to be used for display.
addJsConfigVars( $keys, $value=null)
Add one or more variables to be set in mw.config in JavaScript.
setIndicator( $id, $content)
addExternalLink( $url)
addModuleScripts( $modules)
setLanguageLinks( $ll)
setCategoryLinks( $cl)
__sleep()
Save space for serialization by removing useless values.
addInterwikiLink( $title)
setEditSectionTokens( $t)
setEnableOOUI( $enable=false)
Enables OOUI, if true, in any OutputPage instance this ParserOutput object is added to.
getDisplayTitle()
Get the title to be used for display.
addTrackingCategory( $msg, $title)
Add a tracking category, getting the title from a system message, or print a debug message if the tit...
addTemplate( $title, $page_id, $rev_id)
Register a template dependency for this output.
addLink(Title $title, $id=null)
Record a local or interwiki inline link for saving in future link tables.
addModules( $modules)
addModuleMessages( $modules)
resetParseStartTime()
Resets the parse start timestamps for future calls to getTimeSinceStart()
preventClickjacking( $flag=null)
Get or set the prevent-clickjacking flag.
setProperty( $name, $value)
Set a property to be stored in the page_props database table.
recordOption( $option)
Tags a parser option for use in the cache key for this parser output.
addHeadItem( $section, $tag=false)
Add some text to the "<head>".
hasDynamicContent()
Check whether the cache TTL was lowered due to dynamic content.
getExtensionData( $key)
Gets extensions data previously attached to this ParserOutput using setExtensionData().
getTimeSinceStart( $clock)
Returns the time since resetParseStartTime() was last called.
getRawText()
Get the cacheable text with <mw:editsection> markers still in it.
addImage( $name, $timestamp=null, $sha1=null)
Register a file dependency for this output.
setTOCHTML( $tochtml)
getUsedOptions()
Returns the options from its ParserOptions which have been taken into account to produce this output ...
setLimitReportData( $key, $value)
Sets parser limit report data for a key.
setExtensionData( $key, $value)
Attaches arbitrary data to this ParserObject.
setTimestamp( $timestamp)
__construct( $text='', $languageLinks=[], $categoryLinks=[], $unused=false, $titletext='')
static isLinkInternal( $internal, $url)
Checks, if a url is pointing to the own server.
setTOCEnabled( $flag)
addModuleStyles( $modules)
setFlag( $flag)
Fairly generic flag setter thingy.
const EDITSECTION_REGEX
addCategory( $c, $sort)
setIndexPolicy( $policy)
Represents a title within MediaWiki.
Definition Title.php:34
static newFromText( $text, $defaultNamespace=NS_MAIN)
Create a new Title from text, such as what one would find in a link.
Definition Title.php:277
static makeTitleSafe( $ns, $title, $fragment='', $interwiki='')
Create a new Title from a namespace index and a DB key.
Definition Title.php:548
We use the convention $dbr for read and $dbw for write to help you keep track of whether the database object is a the world will explode Or to be a subsequent write query which succeeded on the master may fail when replicated to the slave due to a unique key collision Replication on the slave will stop and it may take hours to repair the database and get it back online Setting read_only in my cnf on the slave will avoid this but given the dire we prefer to have as many checks as possible We provide a but the wrapper functions like please read the documentation for except in special pages derived from QueryPage It s a common pitfall for new developers to submit code containing SQL queries which examine huge numbers of rows Remember that COUNT * is(N), counting rows in atable is like counting beans in a bucket.------------------------------------------------------------------------ Replication------------------------------------------------------------------------The largest installation of MediaWiki, Wikimedia, uses a large set ofslave MySQL servers replicating writes made to a master MySQL server. Itis important to understand the issues associated with this setup if youwant to write code destined for Wikipedia.It 's often the case that the best algorithm to use for a given taskdepends on whether or not replication is in use. Due to our unabashedWikipedia-centrism, we often just use the replication-friendly version, but if you like, you can use wfGetLB() ->getServerCount() > 1 tocheck to see if replication is in use.===Lag===Lag primarily occurs when large write queries are sent to the master.Writes on the master are executed in parallel, but they are executed inserial when they are replicated to the slaves. The master writes thequery to the binlog when the transaction is committed. The slaves pollthe binlog and start executing the query as soon as it appears. They canservice reads while they are performing a write query, but will not readanything more from the binlog and thus will perform no more writes. Thismeans that if the write query runs for a long time, the slaves will lagbehind the master for the time it takes for the write query to complete.Lag can be exacerbated by high read load. MediaWiki 's load balancer willstop sending reads to a slave when it is lagged by more than 30 seconds.If the load ratios are set incorrectly, or if there is too much loadgenerally, this may lead to a slave permanently hovering around 30seconds lag.If all slaves are lagged by more than 30 seconds, MediaWiki will stopwriting to the database. All edits and other write operations will berefused, with an error returned to the user. This gives the slaves achance to catch up. Before we had this mechanism, the slaves wouldregularly lag by several minutes, making review of recent editsdifficult.In addition to this, MediaWiki attempts to ensure that the user seesevents occurring on the wiki in chronological order. A few seconds of lagcan be tolerated, as long as the user sees a consistent picture fromsubsequent requests. This is done by saving the master binlog positionin the session, and then at the start of each request, waiting for theslave to catch up to that position before doing any reads from it. Ifthis wait times out, reads are allowed anyway, but the request isconsidered to be in "lagged slave mode". Lagged slave mode can bechecked by calling wfGetLB() ->getLaggedSlaveMode(). The onlypractical consequence at present is a warning displayed in the pagefooter.===Lag avoidance===To avoid excessive lag, queries which write large numbers of rows shouldbe split up, generally to write one row at a time. Multi-row INSERT ...SELECT queries are the worst offenders should be avoided altogether.Instead do the select first and then the insert.===Working with lag===Despite our best efforts, it 's not practical to guarantee a low-lagenvironment. Lag will usually be less than one second, but mayoccasionally be up to 30 seconds. For scalability, it 's very importantto keep load on the master low, so simply sending all your queries tothe master is not the answer. So when you have a genuine need forup-to-date data, the following approach is advised:1) Do a quick query to the master for a sequence number or timestamp 2) Run the full query on the slave and check if it matches the data you gotfrom the master 3) If it doesn 't, run the full query on the masterTo avoid swamping the master every time the slaves lag, use of thisapproach should be kept to a minimum. In most cases you should just readfrom the slave and let the user deal with the delay.------------------------------------------------------------------------ Lock contention------------------------------------------------------------------------Due to the high write rate on Wikipedia(and some other wikis), MediaWiki developers need to be very careful to structure their writesto avoid long-lasting locks. By default, MediaWiki opens a transactionat the first query, and commits it before the output is sent. Locks willbe held from the time when the query is done until the commit. So youcan reduce lock time by doing as much processing as possible before youdo your write queries.Often this approach is not good enough, and it becomes necessary toenclose small groups of queries in their own transaction. Use thefollowing syntax:$dbw=wfGetDB(DB_MASTER
For a write query
Definition database.txt:26
when a variable name is used in a it is silently declared as a new local masking the global
Definition design.txt:95
design txt This is a brief overview of the new design More thorough and up to date information is available on the documentation wiki at https
Definition design.txt:12
this class mediates it Skin Encapsulates a look and feel for the wiki All of the functions that render HTML and make choices about how to render it are here and are called from various other places when and is meant to be subclassed with other skins that may override some of its functions The User object contains a reference to a and so rather than having a global skin object we just rely on the global User and get the skin with $wgUser and also has some character encoding functions and other locale stuff The current user interface language is instantiated as $wgLang
Definition design.txt:56
This document is intended to provide useful advice for parties seeking to redistribute MediaWiki to end users It s targeted particularly at maintainers for Linux since it s been observed that distribution packages of MediaWiki often break We ve consistently had to recommend that users seeking support use official tarballs instead of their distribution s and this often solves whatever problem the user is having It would be nice if this could such as
This document is intended to provide useful advice for parties seeking to redistribute MediaWiki to end users It s targeted particularly at maintainers for Linux since it s been observed that distribution packages of MediaWiki often break We ve consistently had to recommend that users seeking support use official tarballs instead of their distribution s and this often solves whatever problem the user is having It would be nice if this could such and we might be restricted by PHP settings such as safe mode or open_basedir We cannot assume that the software even has read access anywhere useful Many shared hosts run all users web applications under the same so they can t rely on Unix and must forbid reads to even standard directories like tmp lest users read each others files We cannot assume that the user has the ability to install or run any programs not written as web accessible PHP scripts Since anything that works on cheap shared hosting will work if you have shell or root access MediaWiki s design is based around catering to the lowest common denominator Although we support higher end setups as the way many things work by default is tailored toward shared hosting These defaults are unconventional from the point of view of and they certainly aren t ideal for someone who s installing MediaWiki as MediaWiki does not conform to normal Unix filesystem layout Hopefully we ll offer direct support for standard layouts in the but for now *any change to the location of files is unsupported *Moving things and leaving symlinks will *probably *not break but it is *strongly *advised not to try any more intrusive changes to get MediaWiki to conform more closely to your filesystem hierarchy Any such attempt will almost certainly result in unnecessary bugs The standard recommended location to install relative to the web is it should be possible to enable the appropriate rewrite rules by if you can reconfigure the web server
globals txt Globals are evil The original MediaWiki code relied on globals for processing context far too often MediaWiki development since then has been a story of slowly moving context out of global variables and into objects Storing processing context in object member variables allows those objects to be reused in a much more flexible way Consider the elegance of
database rows
Definition globals.txt:10
const NS_FILE
Definition Defines.php:76
const NS_SPECIAL
Definition Defines.php:59
const NS_MEDIA
Definition Defines.php:58
const NS_CATEGORY
Definition Defines.php:84
the array() calling protocol came about after MediaWiki 1.4rc1.
in this case you re responsible for computing and outputting the entire conflict i the difference between revisions and your text headers and sections and Diff overridable Default is either copyrightwarning or copyrightwarning2 overridable Default is editpage tos summary such as anonymity and the real check
Definition hooks.txt:1308
null means default in associative array with keys and values unescaped Should be merged with default with a value of false meaning to suppress the attribute in associative array with keys and values unescaped noclasses just before the function returns a value If you return an< a > element with HTML attributes $attribs and contents $html will be returned If you return $ret will be returned and may include noclasses after processing after in associative array form externallinks including delete and has completed for all link tables whether this was an auto creation default is conds Array Extra conditions for the No matching items in log is displayed if loglist is empty msgKey Array If you want a nice box with a set this to the key of the message First element is the message additional optional elements are parameters for the key that are processed with wfMessage() -> params() ->parseAsBlock() - offset Set to overwrite offset parameter in $wgRequest set to '' to unset offset - wrap String Wrap the message in html(usually something like "&lt;div ...>$1&lt;/div>"). - flags Integer display flags(NO_ACTION_LINK, NO_EXTRA_USER_LINKS) 'LogException':Called before an exception(or PHP error) is logged. This is meant for integration with external error aggregation services
this hook is for auditing only RecentChangesLinked and Watchlist RecentChangesLinked and Watchlist e g Watchlist removed from all revisions and log entries to which it was applied This gives extensions a chance to take it off their books as the deletion has already been partly carried out by this point or something similar the user will be unable to create the tag set and then return false from the hook function Ensure you consume the ChangeTagAfterDelete hook to carry out custom deletion actions as context called by AbstractContent::getParserOutput May be used to override the normal model specific rendering of page content $content
Definition hooks.txt:1040
usually copyright or history_copyright This message must be in HTML not wikitext if the section is included from a template to be included in the link
Definition hooks.txt:2728
null means default in associative array with keys and values unescaped Should be merged with default with a value of false meaning to suppress the attribute in associative array with keys and values unescaped noclasses & $ret
Definition hooks.txt:1810
namespace and then decline to actually register it file or subcat img or subcat $title
Definition hooks.txt:944
null for the local wiki Added in
Definition hooks.txt:1421
this hook is for auditing only or null if authentication failed before getting that far or null if we can t even determine that probably a stub it is not rendered in wiki pages or galleries in category pages allow injecting custom HTML after the section Any uses of the hook need to handle escaping see BaseTemplate::getToolbox and BaseTemplate::makeListItem for details on the format of individual items inside of this array or by returning and letting standard HTTP rendering take place modifiable or by returning false and taking over the output $out
Definition hooks.txt:846
this hook is for auditing only RecentChangesLinked and Watchlist RecentChangesLinked and Watchlist e g Watchlist removed from all revisions and log entries to which it was applied This gives extensions a chance to take it off their books $tag
Definition hooks.txt:991
null means default in associative array with keys and values unescaped Should be merged with default with a value of false meaning to suppress the attribute in associative array with keys and values unescaped noclasses just before the function returns a value If you return an< a > element with HTML attributes $attribs and contents $html will be returned If you return $ret will be returned $skin
Definition hooks.txt:1816
Allows to change the fields on the form that will be generated $name
Definition hooks.txt:314
usually copyright or history_copyright This message must be in HTML not wikitext if the section is included from a template $section
Definition hooks.txt:2727
if( $limit) $timestamp
injection txt This is an overview of how MediaWiki makes use of dependency injection The design described here grew from the discussion of RFC T384 The term dependency this means that anything an object needs to operate should be injected from the the object itself should only know narrow no concrete implementation of the logic it relies on The requirement to inject everything typically results in an architecture that based on two main types of and essentially stateless service objects that use other service objects to operate on the value objects As of the beginning MediaWiki is only starting to use the DI approach Much of the code still relies on global state or direct resulting in a highly cyclical dependency which acts as the top level factory for services in MediaWiki which can be used to gain access to default instances of various services MediaWikiServices however also allows new services to be defined and default services to be redefined Services are defined or redefined by providing a callback the instantiator that will return a new instance of the service When it will create an instance of MediaWikiServices and populate it with the services defined in the files listed by thereby bootstrapping the DI framework Per $wgServiceWiringFiles lists includes ServiceWiring php
Definition injection.txt:37
$sort
This document describes the XML format used to represent information about external sites known to a MediaWiki installation This information about external sites is used to allow inter wiki links
in the order they appear.
Definition sitelist.txt:3