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| 1 | <?php |
| 2 | /** |
| 3 | * Copyright © 2012 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 MediaWiki\Title\Title; |
| 25 | use Wikimedia\ParamValidator\ParamValidator; |
| 26 | use Wikimedia\ParamValidator\TypeDef\IntegerDef; |
| 27 | |
| 28 | /** |
| 29 | * A query module to enumerate pages that use a particular prop |
| 30 | * |
| 31 | * @ingroup API |
| 32 | * @since 1.21 |
| 33 | */ |
| 34 | class ApiQueryPagesWithProp extends ApiQueryGeneratorBase { |
| 35 | |
| 36 | /** |
| 37 | * @param ApiQuery $query |
| 38 | * @param string $moduleName |
| 39 | */ |
| 40 | public function __construct( ApiQuery $query, $moduleName ) { |
| 41 | parent::__construct( $query, $moduleName, 'pwp' ); |
| 42 | } |
| 43 | |
| 44 | public function execute() { |
| 45 | $this->run(); |
| 46 | } |
| 47 | |
| 48 | public function getCacheMode( $params ) { |
| 49 | return 'public'; |
| 50 | } |
| 51 | |
| 52 | public function executeGenerator( $resultPageSet ) { |
| 53 | $this->run( $resultPageSet ); |
| 54 | } |
| 55 | |
| 56 | /** |
| 57 | * @param ApiPageSet|null $resultPageSet |
| 58 | * @return void |
| 59 | */ |
| 60 | private function run( $resultPageSet = null ) { |
| 61 | $params = $this->extractRequestParams(); |
| 62 | |
| 63 | $prop = array_fill_keys( $params['prop'], true ); |
| 64 | $fld_ids = isset( $prop['ids'] ); |
| 65 | $fld_title = isset( $prop['title'] ); |
| 66 | $fld_value = isset( $prop['value'] ); |
| 67 | |
| 68 | if ( $resultPageSet === null ) { |
| 69 | $this->addFields( [ 'page_id' ] ); |
| 70 | $this->addFieldsIf( [ 'page_title', 'page_namespace' ], $fld_title ); |
| 71 | $this->addFieldsIf( 'pp_value', $fld_value ); |
| 72 | } else { |
| 73 | $this->addFields( $resultPageSet->getPageTableFields() ); |
| 74 | } |
| 75 | $this->addTables( [ 'page_props', 'page' ] ); |
| 76 | $this->addWhere( 'pp_page=page_id' ); |
| 77 | $this->addWhereFld( 'pp_propname', $params['propname'] ); |
| 78 | |
| 79 | $dir = ( $params['dir'] == 'ascending' ) ? 'newer' : 'older'; |
| 80 | |
| 81 | if ( $params['continue'] ) { |
| 82 | $cont = $this->parseContinueParamOrDie( $params['continue'], [ 'int' ] ); |
| 83 | // Add a WHERE clause |
| 84 | $this->addWhereRange( 'pp_page', $dir, $cont[0], null ); |
| 85 | } |
| 86 | |
| 87 | $sort = ( $params['dir'] === 'descending' ? ' DESC' : '' ); |
| 88 | $this->addOption( 'ORDER BY', 'pp_page' . $sort ); |
| 89 | |
| 90 | $limit = $params['limit']; |
| 91 | $this->addOption( 'LIMIT', $limit + 1 ); |
| 92 | |
| 93 | $result = $this->getResult(); |
| 94 | $count = 0; |
| 95 | $res = $this->select( __METHOD__ ); |
| 96 | |
| 97 | if ( $fld_title && $resultPageSet === null ) { |
| 98 | $this->executeGenderCacheFromResultWrapper( $res, __METHOD__ ); |
| 99 | } |
| 100 | |
| 101 | foreach ( $res as $row ) { |
| 102 | if ( ++$count > $limit ) { |
| 103 | // We've reached the one extra which shows that there are |
| 104 | // additional pages to be had. Stop here... |
| 105 | $this->setContinueEnumParameter( 'continue', $row->page_id ); |
| 106 | break; |
| 107 | } |
| 108 | |
| 109 | if ( $resultPageSet === null ) { |
| 110 | $vals = [ |
| 111 | ApiResult::META_TYPE => 'assoc', |
| 112 | ]; |
| 113 | if ( $fld_ids ) { |
| 114 | $vals['pageid'] = (int)$row->page_id; |
| 115 | } |
| 116 | if ( $fld_title ) { |
| 117 | $title = Title::makeTitle( $row->page_namespace, $row->page_title ); |
| 118 | ApiQueryBase::addTitleInfo( $vals, $title ); |
| 119 | } |
| 120 | if ( $fld_value ) { |
| 121 | $vals['value'] = $row->pp_value; |
| 122 | } |
| 123 | $fit = $result->addValue( [ 'query', $this->getModuleName() ], null, $vals ); |
| 124 | if ( !$fit ) { |
| 125 | $this->setContinueEnumParameter( 'continue', $row->page_id ); |
| 126 | break; |
| 127 | } |
| 128 | } else { |
| 129 | $resultPageSet->processDbRow( $row ); |
| 130 | } |
| 131 | } |
| 132 | |
| 133 | if ( $resultPageSet === null ) { |
| 134 | $result->addIndexedTagName( [ 'query', $this->getModuleName() ], 'page' ); |
| 135 | } |
| 136 | } |
| 137 | |
| 138 | public function getAllowedParams() { |
| 139 | return [ |
| 140 | 'propname' => [ |
| 141 | ParamValidator::PARAM_TYPE => 'string', |
| 142 | ParamValidator::PARAM_REQUIRED => true, |
| 143 | ], |
| 144 | 'prop' => [ |
| 145 | ParamValidator::PARAM_DEFAULT => 'ids|title', |
| 146 | ParamValidator::PARAM_ISMULTI => true, |
| 147 | ParamValidator::PARAM_TYPE => [ |
| 148 | 'ids', |
| 149 | 'title', |
| 150 | 'value', |
| 151 | ], |
| 152 | ApiBase::PARAM_HELP_MSG_PER_VALUE => [], |
| 153 | ], |
| 154 | 'continue' => [ |
| 155 | ApiBase::PARAM_HELP_MSG => 'api-help-param-continue', |
| 156 | ], |
| 157 | 'limit' => [ |
| 158 | ParamValidator::PARAM_TYPE => 'limit', |
| 159 | ParamValidator::PARAM_DEFAULT => 10, |
| 160 | IntegerDef::PARAM_MIN => 1, |
| 161 | IntegerDef::PARAM_MAX => ApiBase::LIMIT_BIG1, |
| 162 | IntegerDef::PARAM_MAX2 => ApiBase::LIMIT_BIG2 |
| 163 | ], |
| 164 | 'dir' => [ |
| 165 | ParamValidator::PARAM_DEFAULT => 'ascending', |
| 166 | ParamValidator::PARAM_TYPE => [ |
| 167 | 'ascending', |
| 168 | 'descending', |
| 169 | ] |
| 170 | ], |
| 171 | ]; |
| 172 | } |
| 173 | |
| 174 | protected function getExamplesMessages() { |
| 175 | return [ |
| 176 | 'action=query&list=pageswithprop&pwppropname=displaytitle&pwpprop=ids|title|value' |
| 177 | => 'apihelp-query+pageswithprop-example-simple', |
| 178 | 'action=query&generator=pageswithprop&gpwppropname=notoc&prop=info' |
| 179 | => 'apihelp-query+pageswithprop-example-generator', |
| 180 | ]; |
| 181 | } |
| 182 | |
| 183 | public function getHelpUrls() { |
| 184 | return 'https://www.mediawiki.org/wiki/Special:MyLanguage/API:Pageswithprop'; |
| 185 | } |
| 186 | } |