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| 1 | <?php |
| 2 | /** |
| 3 | * Copyright © 2013 Wikimedia Foundation and contributors |
| 4 | * |
| 5 | * @license GPL-2.0-or-later |
| 6 | * @file |
| 7 | * @since 1.21 |
| 8 | */ |
| 9 | |
| 10 | namespace MediaWiki\Api; |
| 11 | |
| 12 | use Wikimedia\ParamValidator\ParamValidator; |
| 13 | use Wikimedia\ParamValidator\TypeDef\IntegerDef; |
| 14 | |
| 15 | /** |
| 16 | * A query module to list used page props |
| 17 | * |
| 18 | * @ingroup API |
| 19 | * @since 1.21 |
| 20 | */ |
| 21 | class ApiQueryPagePropNames extends ApiQueryBase { |
| 22 | |
| 23 | public function __construct( ApiQuery $query, string $moduleName ) { |
| 24 | parent::__construct( $query, $moduleName, 'ppn' ); |
| 25 | } |
| 26 | |
| 27 | /** @inheritDoc */ |
| 28 | public function getCacheMode( $params ) { |
| 29 | return 'public'; |
| 30 | } |
| 31 | |
| 32 | public function execute() { |
| 33 | $params = $this->extractRequestParams(); |
| 34 | |
| 35 | $this->addTables( 'page_props' ); |
| 36 | $this->addFields( 'pp_propname' ); |
| 37 | $this->addOption( 'DISTINCT' ); |
| 38 | $this->addOption( 'ORDER BY', 'pp_propname' ); |
| 39 | |
| 40 | if ( $params['continue'] ) { |
| 41 | $cont = $this->parseContinueParamOrDie( $params['continue'], [ 'string' ] ); |
| 42 | // Add a WHERE clause |
| 43 | $this->addWhereRange( 'pp_propname', 'newer', $cont[0], null ); |
| 44 | } |
| 45 | |
| 46 | $limit = $params['limit']; |
| 47 | |
| 48 | // mysql has issues with limit in loose index T115825 |
| 49 | if ( $this->getDB()->getType() !== 'mysql' ) { |
| 50 | $this->addOption( 'LIMIT', $limit + 1 ); |
| 51 | } |
| 52 | |
| 53 | $result = $this->getResult(); |
| 54 | $count = 0; |
| 55 | foreach ( $this->select( __METHOD__ ) as $row ) { |
| 56 | if ( ++$count > $limit ) { |
| 57 | // We've reached the one extra which shows that there are |
| 58 | // additional pages to be had. Stop here... |
| 59 | $this->setContinueEnumParameter( 'continue', $row->pp_propname ); |
| 60 | break; |
| 61 | } |
| 62 | |
| 63 | $vals = []; |
| 64 | $vals['propname'] = $row->pp_propname; |
| 65 | $fit = $result->addValue( [ 'query', $this->getModuleName() ], null, $vals ); |
| 66 | if ( !$fit ) { |
| 67 | $this->setContinueEnumParameter( 'continue', $row->pp_propname ); |
| 68 | break; |
| 69 | } |
| 70 | } |
| 71 | |
| 72 | $result->addIndexedTagName( [ 'query', $this->getModuleName() ], 'p' ); |
| 73 | } |
| 74 | |
| 75 | /** @inheritDoc */ |
| 76 | public function getAllowedParams() { |
| 77 | return [ |
| 78 | 'continue' => [ |
| 79 | ApiBase::PARAM_HELP_MSG => 'api-help-param-continue', |
| 80 | ], |
| 81 | 'limit' => [ |
| 82 | ParamValidator::PARAM_TYPE => 'limit', |
| 83 | ParamValidator::PARAM_DEFAULT => 10, |
| 84 | IntegerDef::PARAM_MIN => 1, |
| 85 | IntegerDef::PARAM_MAX => ApiBase::LIMIT_BIG1, |
| 86 | IntegerDef::PARAM_MAX2 => ApiBase::LIMIT_BIG2 |
| 87 | ], |
| 88 | ]; |
| 89 | } |
| 90 | |
| 91 | /** @inheritDoc */ |
| 92 | protected function getExamplesMessages() { |
| 93 | return [ |
| 94 | 'action=query&list=pagepropnames' |
| 95 | => 'apihelp-query+pagepropnames-example-simple', |
| 96 | ]; |
| 97 | } |
| 98 | |
| 99 | /** @inheritDoc */ |
| 100 | public function getHelpUrls() { |
| 101 | return 'https://www.mediawiki.org/wiki/Special:MyLanguage/API:Pagepropnames'; |
| 102 | } |
| 103 | } |
| 104 | |
| 105 | /** @deprecated class alias since 1.43 */ |
| 106 | class_alias( ApiQueryPagePropNames::class, 'ApiQueryPagePropNames' ); |