Completed
Branch master (62f6c6)
by
unknown
21:31
created

ApiQueryWatchlist::extractRowInfo()   F

Complexity

Conditions 36
Paths > 20000

Size

Total Lines 121
Code Lines 68

Duplication

Lines 80
Ratio 66.12 %

Importance

Changes 0
Metric Value
cc 36
eloc 68
nc 1103520
nop 1
dl 80
loc 121
rs 2
c 0
b 0
f 0

How to fix   Long Method    Complexity   

Long Method

Small methods make your code easier to understand, in particular if combined with a good name. Besides, if your method is small, finding a good name is usually much easier.

For example, if you find yourself adding comments to a method's body, this is usually a good sign to extract the commented part to a new method, and use the comment as a starting point when coming up with a good name for this new method.

Commonly applied refactorings include:

1
<?php
2
/**
3
 *
4
 *
5
 * Created on Sep 25, 2006
6
 *
7
 * Copyright © 2006 Yuri Astrakhan "<Firstname><Lastname>@gmail.com"
8
 *
9
 * This program 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.
13
 *
14
 * This program 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.
18
 *
19
 * You should have received a copy of the GNU General Public License along
20
 * with this program; if not, write to the Free Software Foundation, Inc.,
21
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
22
 * http://www.gnu.org/copyleft/gpl.html
23
 *
24
 * @file
25
 */
26
27
/**
28
 * This query action allows clients to retrieve a list of recently modified pages
29
 * that are part of the logged-in user's watchlist.
30
 *
31
 * @ingroup API
32
 */
33
class ApiQueryWatchlist extends ApiQueryGeneratorBase {
34
35
	public function __construct( ApiQuery $query, $moduleName ) {
36
		parent::__construct( $query, $moduleName, 'wl' );
37
	}
38
39
	public function execute() {
40
		$this->run();
41
	}
42
43
	public function executeGenerator( $resultPageSet ) {
44
		$this->run( $resultPageSet );
45
	}
46
47
	private $fld_ids = false, $fld_title = false, $fld_patrol = false,
0 ignored issues
show
Coding Style introduced by
It is generally advisable to only define one property per statement.

Only declaring a single property per statement allows you to later on add doc comments more easily.

It is also recommended by PSR2, so it is a common style that many people expect.

Loading history...
48
		$fld_flags = false, $fld_timestamp = false, $fld_user = false,
49
		$fld_comment = false, $fld_parsedcomment = false, $fld_sizes = false,
50
		$fld_notificationtimestamp = false, $fld_userid = false,
51
		$fld_loginfo = false;
52
53
	/**
54
	 * @param ApiPageSet $resultPageSet
55
	 * @return void
56
	 */
57
	private function run( $resultPageSet = null ) {
58
		$this->selectNamedDB( 'watchlist', DB_SLAVE, 'watchlist' );
59
60
		$params = $this->extractRequestParams();
61
62
		$user = $this->getUser();
63
		$wlowner = $this->getWatchlistUser( $params );
64
65
		if ( !is_null( $params['prop'] ) && is_null( $resultPageSet ) ) {
66
			$prop = array_flip( $params['prop'] );
67
68
			$this->fld_ids = isset( $prop['ids'] );
69
			$this->fld_title = isset( $prop['title'] );
70
			$this->fld_flags = isset( $prop['flags'] );
71
			$this->fld_user = isset( $prop['user'] );
72
			$this->fld_userid = isset( $prop['userid'] );
73
			$this->fld_comment = isset( $prop['comment'] );
74
			$this->fld_parsedcomment = isset( $prop['parsedcomment'] );
75
			$this->fld_timestamp = isset( $prop['timestamp'] );
76
			$this->fld_sizes = isset( $prop['sizes'] );
77
			$this->fld_patrol = isset( $prop['patrol'] );
78
			$this->fld_notificationtimestamp = isset( $prop['notificationtimestamp'] );
79
			$this->fld_loginfo = isset( $prop['loginfo'] );
80
81
			if ( $this->fld_patrol ) {
82
				if ( !$user->useRCPatrol() && !$user->useNPPatrol() ) {
83
					$this->dieUsage( 'patrol property is not available', 'patrol' );
84
				}
85
			}
86
		}
87
88
		$this->addFields( [
89
			'rc_id',
90
			'rc_namespace',
91
			'rc_title',
92
			'rc_timestamp',
93
			'rc_type',
94
			'rc_deleted',
95
		] );
96
97
		if ( is_null( $resultPageSet ) ) {
98
			$this->addFields( [
99
				'rc_cur_id',
100
				'rc_this_oldid',
101
				'rc_last_oldid',
102
			] );
103
104
			$this->addFieldsIf( [ 'rc_type', 'rc_minor', 'rc_bot' ], $this->fld_flags );
105
			$this->addFieldsIf( 'rc_user', $this->fld_user || $this->fld_userid );
106
			$this->addFieldsIf( 'rc_user_text', $this->fld_user );
107
			$this->addFieldsIf( 'rc_comment', $this->fld_comment || $this->fld_parsedcomment );
108
			$this->addFieldsIf( [ 'rc_patrolled', 'rc_log_type' ], $this->fld_patrol );
109
			$this->addFieldsIf( [ 'rc_old_len', 'rc_new_len' ], $this->fld_sizes );
110
			$this->addFieldsIf( 'wl_notificationtimestamp', $this->fld_notificationtimestamp );
111
			$this->addFieldsIf(
112
				[ 'rc_logid', 'rc_log_type', 'rc_log_action', 'rc_params' ],
113
				$this->fld_loginfo
114
			);
115
		} elseif ( $params['allrev'] ) {
116
			$this->addFields( 'rc_this_oldid' );
117
		} else {
118
			$this->addFields( 'rc_cur_id' );
119
		}
120
121
		$this->addTables( [
122
			'recentchanges',
123
			'watchlist',
124
		] );
125
126
		$userId = $wlowner->getId();
127
		$this->addJoinConds( [ 'watchlist' => [ 'INNER JOIN',
128
			[
129
				'wl_user' => $userId,
130
				'wl_namespace=rc_namespace',
131
				'wl_title=rc_title'
132
			]
133
		] ] );
134
135
		$db = $this->getDB();
136
137
		$this->addTimestampWhereRange( 'rc_timestamp', $params['dir'],
138
			$params['start'], $params['end'] );
139
		// Include in ORDER BY for uniqueness
140
		$this->addWhereRange( 'rc_id', $params['dir'], null, null );
141
142
		if ( !is_null( $params['continue'] ) ) {
143
			$cont = explode( '|', $params['continue'] );
144
			$this->dieContinueUsageIf( count( $cont ) != 2 );
145
			$op = ( $params['dir'] === 'newer' ? '>' : '<' );
146
			$continueTimestamp = $db->addQuotes( $db->timestamp( $cont[0] ) );
0 ignored issues
show
Security Bug introduced by
It seems like $db->timestamp($cont[0]) targeting DatabaseBase::timestamp() can also be of type false; however, DatabaseBase::addQuotes() does only seem to accept string|object<Blob>, did you maybe forget to handle an error condition?
Loading history...
147
			$continueId = (int)$cont[1];
148
			$this->dieContinueUsageIf( $continueId != $cont[1] );
149
			$this->addWhere( "rc_timestamp $op $continueTimestamp OR " .
150
				"(rc_timestamp = $continueTimestamp AND " .
151
				"rc_id $op= $continueId)"
152
			);
153
		}
154
155
		$this->addWhereFld( 'wl_namespace', $params['namespace'] );
156
157
		if ( !$params['allrev'] ) {
158
			$this->addTables( 'page' );
159
			$this->addJoinConds( [ 'page' => [ 'LEFT JOIN', 'rc_cur_id=page_id' ] ] );
160
			$this->addWhere( 'rc_this_oldid=page_latest OR rc_type=' . RC_LOG );
161
		}
162
163
		if ( !is_null( $params['show'] ) ) {
164
			$show = array_flip( $params['show'] );
165
166
			/* Check for conflicting parameters. */
167
			if ( ( isset( $show['minor'] ) && isset( $show['!minor'] ) )
168
				|| ( isset( $show['bot'] ) && isset( $show['!bot'] ) )
169
				|| ( isset( $show['anon'] ) && isset( $show['!anon'] ) )
170
				|| ( isset( $show['patrolled'] ) && isset( $show['!patrolled'] ) )
171
				|| ( isset( $show['unread'] ) && isset( $show['!unread'] ) )
172
			) {
173
				$this->dieUsageMsg( 'show' );
174
			}
175
176
			// Check permissions.
177 View Code Duplication
			if ( isset( $show['patrolled'] ) || isset( $show['!patrolled'] ) ) {
178
				if ( !$user->useRCPatrol() && !$user->useNPPatrol() ) {
179
					$this->dieUsage(
180
						'You need the patrol right to request the patrolled flag',
181
						'permissiondenied'
182
					);
183
				}
184
			}
185
186
			/* Add additional conditions to query depending upon parameters. */
187
			$this->addWhereIf( 'rc_minor = 0', isset( $show['!minor'] ) );
188
			$this->addWhereIf( 'rc_minor != 0', isset( $show['minor'] ) );
189
			$this->addWhereIf( 'rc_bot = 0', isset( $show['!bot'] ) );
190
			$this->addWhereIf( 'rc_bot != 0', isset( $show['bot'] ) );
191
			$this->addWhereIf( 'rc_user = 0', isset( $show['anon'] ) );
192
			$this->addWhereIf( 'rc_user != 0', isset( $show['!anon'] ) );
193
			$this->addWhereIf( 'rc_patrolled = 0', isset( $show['!patrolled'] ) );
194
			$this->addWhereIf( 'rc_patrolled != 0', isset( $show['patrolled'] ) );
195
			$this->addWhereIf( 'rc_timestamp >= wl_notificationtimestamp', isset( $show['unread'] ) );
196
			$this->addWhereIf(
197
				'wl_notificationtimestamp IS NULL OR rc_timestamp < wl_notificationtimestamp',
198
				isset( $show['!unread'] )
199
			);
200
		}
201
202 View Code Duplication
		if ( !is_null( $params['type'] ) ) {
203
			try {
204
				$this->addWhereFld( 'rc_type', RecentChange::parseToRCType( $params['type'] ) );
205
			} catch ( Exception $e ) {
206
				ApiBase::dieDebug( __METHOD__, $e->getMessage() );
207
			}
208
		}
209
210 View Code Duplication
		if ( !is_null( $params['user'] ) && !is_null( $params['excludeuser'] ) ) {
211
			$this->dieUsage( 'user and excludeuser cannot be used together', 'user-excludeuser' );
212
		}
213
		if ( !is_null( $params['user'] ) ) {
214
			$this->addWhereFld( 'rc_user_text', $params['user'] );
215
		}
216
		if ( !is_null( $params['excludeuser'] ) ) {
217
			$this->addWhere( 'rc_user_text != ' . $db->addQuotes( $params['excludeuser'] ) );
218
		}
219
220
		// This is an index optimization for mysql, as done in the Special:Watchlist page
221
		$this->addWhereIf(
222
			"rc_timestamp > ''",
223
			!isset( $params['start'] ) && !isset( $params['end'] ) && $db->getType() == 'mysql'
224
		);
225
226
		// Paranoia: avoid brute force searches (bug 17342)
227 View Code Duplication
		if ( !is_null( $params['user'] ) || !is_null( $params['excludeuser'] ) ) {
228
			if ( !$user->isAllowed( 'deletedhistory' ) ) {
229
				$bitmask = Revision::DELETED_USER;
230
			} elseif ( !$user->isAllowedAny( 'suppressrevision', 'viewsuppressed' ) ) {
231
				$bitmask = Revision::DELETED_USER | Revision::DELETED_RESTRICTED;
232
			} else {
233
				$bitmask = 0;
234
			}
235
			if ( $bitmask ) {
236
				$this->addWhere( $this->getDB()->bitAnd( 'rc_deleted', $bitmask ) . " != $bitmask" );
237
			}
238
		}
239
240
		// LogPage::DELETED_ACTION hides the affected page, too. So hide those
241
		// entirely from the watchlist, or someone could guess the title.
242
		if ( !$user->isAllowed( 'deletedhistory' ) ) {
243
			$bitmask = LogPage::DELETED_ACTION;
244
		} elseif ( !$user->isAllowedAny( 'suppressrevision', 'viewsuppressed' ) ) {
245
			$bitmask = LogPage::DELETED_ACTION | LogPage::DELETED_RESTRICTED;
246
		} else {
247
			$bitmask = 0;
248
		}
249 View Code Duplication
		if ( $bitmask ) {
250
			$this->addWhere( $this->getDB()->makeList( [
251
				'rc_type != ' . RC_LOG,
252
				$this->getDB()->bitAnd( 'rc_deleted', $bitmask ) . " != $bitmask",
253
			], LIST_OR ) );
254
		}
255
256
		$this->addOption( 'LIMIT', $params['limit'] + 1 );
257
258
		$ids = [];
259
		$count = 0;
260
		$res = $this->select( __METHOD__ );
261
262
		foreach ( $res as $row ) {
263 View Code Duplication
			if ( ++$count > $params['limit'] ) {
264
				// We've reached the one extra which shows that there are
265
				// additional pages to be had. Stop here...
266
				$this->setContinueEnumParameter( 'continue', "$row->rc_timestamp|$row->rc_id" );
267
				break;
268
			}
269
270
			if ( is_null( $resultPageSet ) ) {
271
				$vals = $this->extractRowInfo( $row );
272
				$fit = $this->getResult()->addValue( [ 'query', $this->getModuleName() ], null, $vals );
273
				if ( !$fit ) {
274
					$this->setContinueEnumParameter( 'continue', "$row->rc_timestamp|$row->rc_id" );
275
					break;
276
				}
277
			} else {
278
				if ( $params['allrev'] ) {
279
					$ids[] = intval( $row->rc_this_oldid );
280
				} else {
281
					$ids[] = intval( $row->rc_cur_id );
282
				}
283
			}
284
		}
285
286 View Code Duplication
		if ( is_null( $resultPageSet ) ) {
287
			$this->getResult()->addIndexedTagName(
288
				[ 'query', $this->getModuleName() ],
289
				'item'
290
			);
291
		} elseif ( $params['allrev'] ) {
292
			$resultPageSet->populateFromRevisionIDs( $ids );
293
		} else {
294
			$resultPageSet->populateFromPageIDs( $ids );
295
		}
296
	}
297
298
	private function extractRowInfo( $row ) {
299
		/* Determine the title of the page that has been changed. */
300
		$title = Title::makeTitle( $row->rc_namespace, $row->rc_title );
301
		$user = $this->getUser();
302
303
		/* Our output data. */
304
		$vals = [];
305
		$type = intval( $row->rc_type );
306
		$vals['type'] = RecentChange::parseFromRCType( $type );
307
		$anyHidden = false;
308
309
		/* Create a new entry in the result for the title. */
310 View Code Duplication
		if ( $this->fld_title || $this->fld_ids ) {
311
			// These should already have been filtered out of the query, but just in case.
312
			if ( $type === RC_LOG && ( $row->rc_deleted & LogPage::DELETED_ACTION ) ) {
313
				$vals['actionhidden'] = true;
314
				$anyHidden = true;
315
			}
316
			if ( $type !== RC_LOG ||
317
				LogEventsList::userCanBitfield( $row->rc_deleted, LogPage::DELETED_ACTION, $user )
318
			) {
319
				if ( $this->fld_title ) {
320
					ApiQueryBase::addTitleInfo( $vals, $title );
321
				}
322
				if ( $this->fld_ids ) {
323
					$vals['pageid'] = intval( $row->rc_cur_id );
324
					$vals['revid'] = intval( $row->rc_this_oldid );
325
					$vals['old_revid'] = intval( $row->rc_last_oldid );
326
				}
327
			}
328
		}
329
330
		/* Add user data and 'anon' flag, if user is anonymous. */
331 View Code Duplication
		if ( $this->fld_user || $this->fld_userid ) {
332
			if ( $row->rc_deleted & Revision::DELETED_USER ) {
333
				$vals['userhidden'] = true;
334
				$anyHidden = true;
335
			}
336
			if ( Revision::userCanBitfield( $row->rc_deleted, Revision::DELETED_USER, $user ) ) {
337
				if ( $this->fld_userid ) {
338
					$vals['userid'] = (int)$row->rc_user;
339
					// for backwards compatibility
340
					$vals['user'] = (int)$row->rc_user;
341
				}
342
343
				if ( $this->fld_user ) {
344
					$vals['user'] = $row->rc_user_text;
345
				}
346
347
				if ( !$row->rc_user ) {
348
					$vals['anon'] = true;
349
				}
350
			}
351
		}
352
353
		/* Add flags, such as new, minor, bot. */
354 View Code Duplication
		if ( $this->fld_flags ) {
355
			$vals['bot'] = (bool)$row->rc_bot;
356
			$vals['new'] = $row->rc_type == RC_NEW;
357
			$vals['minor'] = (bool)$row->rc_minor;
358
		}
359
360
		/* Add sizes of each revision. (Only available on 1.10+) */
361 View Code Duplication
		if ( $this->fld_sizes ) {
362
			$vals['oldlen'] = intval( $row->rc_old_len );
363
			$vals['newlen'] = intval( $row->rc_new_len );
364
		}
365
366
		/* Add the timestamp. */
367
		if ( $this->fld_timestamp ) {
368
			$vals['timestamp'] = wfTimestamp( TS_ISO_8601, $row->rc_timestamp );
369
		}
370
371
		if ( $this->fld_notificationtimestamp ) {
372
			$vals['notificationtimestamp'] = ( $row->wl_notificationtimestamp == null )
373
				? ''
374
				: wfTimestamp( TS_ISO_8601, $row->wl_notificationtimestamp );
375
		}
376
377
		/* Add edit summary / log summary. */
378 View Code Duplication
		if ( $this->fld_comment || $this->fld_parsedcomment ) {
379
			if ( $row->rc_deleted & Revision::DELETED_COMMENT ) {
380
				$vals['commenthidden'] = true;
381
				$anyHidden = true;
382
			}
383
			if ( Revision::userCanBitfield( $row->rc_deleted, Revision::DELETED_COMMENT, $user ) ) {
384
				if ( $this->fld_comment && isset( $row->rc_comment ) ) {
385
					$vals['comment'] = $row->rc_comment;
386
				}
387
388
				if ( $this->fld_parsedcomment && isset( $row->rc_comment ) ) {
389
					$vals['parsedcomment'] = Linker::formatComment( $row->rc_comment, $title );
390
				}
391
			}
392
		}
393
394
		/* Add the patrolled flag */
395 View Code Duplication
		if ( $this->fld_patrol ) {
396
			$vals['patrolled'] = $row->rc_patrolled == 1;
397
			$vals['unpatrolled'] = ChangesList::isUnpatrolled( $row, $user );
398
		}
399
400 View Code Duplication
		if ( $this->fld_loginfo && $row->rc_type == RC_LOG ) {
401
			if ( $row->rc_deleted & LogPage::DELETED_ACTION ) {
402
				$vals['actionhidden'] = true;
403
				$anyHidden = true;
404
			}
405
			if ( LogEventsList::userCanBitfield( $row->rc_deleted, LogPage::DELETED_ACTION, $user ) ) {
406
				$vals['logid'] = intval( $row->rc_logid );
407
				$vals['logtype'] = $row->rc_log_type;
408
				$vals['logaction'] = $row->rc_log_action;
409
				$vals['logparams'] = LogFormatter::newFromRow( $row )->formatParametersForApi();
410
			}
411
		}
412
413
		if ( $anyHidden && ( $row->rc_deleted & Revision::DELETED_RESTRICTED ) ) {
414
			$vals['suppressed'] = true;
415
		}
416
417
		return $vals;
418
	}
419
420
	public function getAllowedParams() {
421
		return [
422
			'allrev' => false,
423
			'start' => [
424
				ApiBase::PARAM_TYPE => 'timestamp'
425
			],
426
			'end' => [
427
				ApiBase::PARAM_TYPE => 'timestamp'
428
			],
429
			'namespace' => [
430
				ApiBase::PARAM_ISMULTI => true,
431
				ApiBase::PARAM_TYPE => 'namespace'
432
			],
433
			'user' => [
434
				ApiBase::PARAM_TYPE => 'user',
435
			],
436
			'excludeuser' => [
437
				ApiBase::PARAM_TYPE => 'user',
438
			],
439
			'dir' => [
440
				ApiBase::PARAM_DFLT => 'older',
441
				ApiBase::PARAM_TYPE => [
442
					'newer',
443
					'older'
444
				],
445
				ApiHelp::PARAM_HELP_MSG => 'api-help-param-direction',
446
			],
447
			'limit' => [
448
				ApiBase::PARAM_DFLT => 10,
449
				ApiBase::PARAM_TYPE => 'limit',
450
				ApiBase::PARAM_MIN => 1,
451
				ApiBase::PARAM_MAX => ApiBase::LIMIT_BIG1,
452
				ApiBase::PARAM_MAX2 => ApiBase::LIMIT_BIG2
453
			],
454
			'prop' => [
455
				ApiBase::PARAM_ISMULTI => true,
456
				ApiBase::PARAM_DFLT => 'ids|title|flags',
457
				ApiBase::PARAM_HELP_MSG_PER_VALUE => [],
458
				ApiBase::PARAM_TYPE => [
459
					'ids',
460
					'title',
461
					'flags',
462
					'user',
463
					'userid',
464
					'comment',
465
					'parsedcomment',
466
					'timestamp',
467
					'patrol',
468
					'sizes',
469
					'notificationtimestamp',
470
					'loginfo',
471
				]
472
			],
473
			'show' => [
474
				ApiBase::PARAM_ISMULTI => true,
475
				ApiBase::PARAM_TYPE => [
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					'minor',
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					'!minor',
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					'bot',
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					'!bot',
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					'anon',
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					'!anon',
482
					'patrolled',
483
					'!patrolled',
484
					'unread',
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					'!unread',
486
				]
487
			],
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			'type' => [
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				ApiBase::PARAM_DFLT => 'edit|new|log|categorize',
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				ApiBase::PARAM_ISMULTI => true,
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				ApiBase::PARAM_HELP_MSG_PER_VALUE => [],
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				ApiBase::PARAM_TYPE => RecentChange::getChangeTypes()
493
			],
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			'owner' => [
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				ApiBase::PARAM_TYPE => 'user'
496
			],
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			'token' => [
498
				ApiBase::PARAM_TYPE => 'string'
499
			],
500
			'continue' => [
501
				ApiBase::PARAM_HELP_MSG => 'api-help-param-continue',
502
			],
503
		];
504
	}
505
506
	protected function getExamplesMessages() {
507
		return [
508
			'action=query&list=watchlist'
509
				=> 'apihelp-query+watchlist-example-simple',
510
			'action=query&list=watchlist&wlprop=ids|title|timestamp|user|comment'
511
				=> 'apihelp-query+watchlist-example-props',
512
			'action=query&list=watchlist&wlallrev=&wlprop=ids|title|timestamp|user|comment'
513
				=> 'apihelp-query+watchlist-example-allrev',
514
			'action=query&generator=watchlist&prop=info'
515
				=> 'apihelp-query+watchlist-example-generator',
516
			'action=query&generator=watchlist&gwlallrev=&prop=revisions&rvprop=timestamp|user'
517
				=> 'apihelp-query+watchlist-example-generator-rev',
518
			'action=query&list=watchlist&wlowner=Example&wltoken=123ABC'
519
				=> 'apihelp-query+watchlist-example-wlowner',
520
		];
521
	}
522
523
	public function getHelpUrls() {
524
		return 'https://www.mediawiki.org/wiki/API:Watchlist';
525
	}
526
}
527