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| 1 | <?php |
| 2 | /** |
| 3 | * Copyright © 2013 Wikimedia Foundation and contributors |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify |
| 6 | * it under the terms of the GNU General Public License as published by |
| 7 | * the Free Software Foundation; either version 2 of the License, or |
| 8 | * (at your option) any later version. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | * GNU General Public License for more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License along |
| 16 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 17 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
| 18 | * http://www.gnu.org/copyleft/gpl.html |
| 19 | * |
| 20 | * @file |
| 21 | * @since 1.21 |
| 22 | */ |
| 23 | |
| 24 | use Wikimedia\ParamValidator\ParamValidator; |
| 25 | use Wikimedia\ParamValidator\TypeDef\IntegerDef; |
| 26 | |
| 27 | /** |
| 28 | * A query module to list used page props |
| 29 | * |
| 30 | * @ingroup API |
| 31 | * @since 1.21 |
| 32 | */ |
| 33 | class ApiQueryPagePropNames extends ApiQueryBase { |
| 34 | |
| 35 | public function __construct( ApiQuery $query, $moduleName ) { |
| 36 | parent::__construct( $query, $moduleName, 'ppn' ); |
| 37 | } |
| 38 | |
| 39 | public function getCacheMode( $params ) { |
| 40 | return 'public'; |
| 41 | } |
| 42 | |
| 43 | public function execute() { |
| 44 | $params = $this->extractRequestParams(); |
| 45 | |
| 46 | $this->addTables( 'page_props' ); |
| 47 | $this->addFields( 'pp_propname' ); |
| 48 | $this->addOption( 'DISTINCT' ); |
| 49 | $this->addOption( 'ORDER BY', 'pp_propname' ); |
| 50 | |
| 51 | if ( $params['continue'] ) { |
| 52 | $cont = $this->parseContinueParamOrDie( $params['continue'], [ 'string' ] ); |
| 53 | // Add a WHERE clause |
| 54 | $this->addWhereRange( 'pp_propname', 'newer', $cont[0], null ); |
| 55 | } |
| 56 | |
| 57 | $limit = $params['limit']; |
| 58 | |
| 59 | // mysql has issues with limit in loose index T115825 |
| 60 | if ( $this->getDB()->getType() !== 'mysql' ) { |
| 61 | $this->addOption( 'LIMIT', $limit + 1 ); |
| 62 | } |
| 63 | |
| 64 | $result = $this->getResult(); |
| 65 | $count = 0; |
| 66 | foreach ( $this->select( __METHOD__ ) as $row ) { |
| 67 | if ( ++$count > $limit ) { |
| 68 | // We've reached the one extra which shows that there are |
| 69 | // additional pages to be had. Stop here... |
| 70 | $this->setContinueEnumParameter( 'continue', $row->pp_propname ); |
| 71 | break; |
| 72 | } |
| 73 | |
| 74 | $vals = []; |
| 75 | $vals['propname'] = $row->pp_propname; |
| 76 | $fit = $result->addValue( [ 'query', $this->getModuleName() ], null, $vals ); |
| 77 | if ( !$fit ) { |
| 78 | $this->setContinueEnumParameter( 'continue', $row->pp_propname ); |
| 79 | break; |
| 80 | } |
| 81 | } |
| 82 | |
| 83 | $result->addIndexedTagName( [ 'query', $this->getModuleName() ], 'p' ); |
| 84 | } |
| 85 | |
| 86 | public function getAllowedParams() { |
| 87 | return [ |
| 88 | 'continue' => [ |
| 89 | ApiBase::PARAM_HELP_MSG => 'api-help-param-continue', |
| 90 | ], |
| 91 | 'limit' => [ |
| 92 | ParamValidator::PARAM_TYPE => 'limit', |
| 93 | ParamValidator::PARAM_DEFAULT => 10, |
| 94 | IntegerDef::PARAM_MIN => 1, |
| 95 | IntegerDef::PARAM_MAX => ApiBase::LIMIT_BIG1, |
| 96 | IntegerDef::PARAM_MAX2 => ApiBase::LIMIT_BIG2 |
| 97 | ], |
| 98 | ]; |
| 99 | } |
| 100 | |
| 101 | protected function getExamplesMessages() { |
| 102 | return [ |
| 103 | 'action=query&list=pagepropnames' |
| 104 | => 'apihelp-query+pagepropnames-example-simple', |
| 105 | ]; |
| 106 | } |
| 107 | |
| 108 | public function getHelpUrls() { |
| 109 | return 'https://www.mediawiki.org/wiki/Special:MyLanguage/API:Pagepropnames'; |
| 110 | } |
| 111 | } |