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ApiQueryPagesWithProp.php
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ApiQueryPagesWithProp.php
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<?php
/**
* Copyright © 2012 Wikimedia Foundation and contributors
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
* http://www.gnu.org/copyleft/gpl.html
*
* @file
* @since 1.21
*/
namespace MediaWiki\Api;
use MediaWiki\Title\Title;
use Wikimedia\ParamValidator\ParamValidator;
use Wikimedia\ParamValidator\TypeDef\IntegerDef;
/**
* A query module to enumerate pages that use a particular prop
*
* @ingroup API
* @since 1.21
*/
class ApiQueryPagesWithProp extends ApiQueryGeneratorBase {
public function __construct( ApiQuery $query, string $moduleName ) {
parent::__construct( $query, $moduleName, 'pwp' );
}
public function execute() {
$this->run();
}
public function getCacheMode( $params ) {
return 'public';
}
public function executeGenerator( $resultPageSet ) {
$this->run( $resultPageSet );
}
/**
* @param ApiPageSet|null $resultPageSet
* @return void
*/
private function run( $resultPageSet = null ) {
$params = $this->extractRequestParams();
$prop = array_fill_keys( $params['prop'], true );
$fld_ids = isset( $prop['ids'] );
$fld_title = isset( $prop['title'] );
$fld_value = isset( $prop['value'] );
if ( $resultPageSet === null ) {
$this->addFields( [ 'page_id' ] );
$this->addFieldsIf( [ 'page_title', 'page_namespace' ], $fld_title );
$this->addFieldsIf( 'pp_value', $fld_value );
} else {
$this->addFields( $resultPageSet->getPageTableFields() );
}
$this->addTables( [ 'page_props', 'page' ] );
$this->addWhere( 'pp_page=page_id' );
$this->addWhereFld( 'pp_propname', $params['propname'] );
$dir = ( $params['dir'] == 'ascending' ) ? 'newer' : 'older';
if ( $params['continue'] ) {
$cont = $this->parseContinueParamOrDie( $params['continue'], [ 'int' ] );
// Add a WHERE clause
$this->addWhereRange( 'pp_page', $dir, $cont[0], null );
}
$sort = ( $params['dir'] === 'descending' ? ' DESC' : '' );
$this->addOption( 'ORDER BY', 'pp_page' . $sort );
$limit = $params['limit'];
$this->addOption( 'LIMIT', $limit + 1 );
$result = $this->getResult();
$count = 0;
$res = $this->select( __METHOD__ );
if ( $fld_title && $resultPageSet === null ) {
$this->executeGenderCacheFromResultWrapper( $res, __METHOD__ );
}
foreach ( $res as $row ) {
if ( ++$count > $limit ) {
// We've reached the one extra which shows that there are
// additional pages to be had. Stop here...
$this->setContinueEnumParameter( 'continue', $row->page_id );
break;
}
if ( $resultPageSet === null ) {
$vals = [
ApiResult::META_TYPE => 'assoc',
];
if ( $fld_ids ) {
$vals['pageid'] = (int)$row->page_id;
}
if ( $fld_title ) {
$title = Title::makeTitle( $row->page_namespace, $row->page_title );
ApiQueryBase::addTitleInfo( $vals, $title );
}
if ( $fld_value ) {
$vals['value'] = $row->pp_value;
}
$fit = $result->addValue( [ 'query', $this->getModuleName() ], null, $vals );
if ( !$fit ) {
$this->setContinueEnumParameter( 'continue', $row->page_id );
break;
}
} else {
$resultPageSet->processDbRow( $row );
}
}
if ( $resultPageSet === null ) {
$result->addIndexedTagName( [ 'query', $this->getModuleName() ], 'page' );
}
}
public function getAllowedParams() {
return [
'propname' => [
ParamValidator::PARAM_TYPE => 'string',
ParamValidator::PARAM_REQUIRED => true,
],
'prop' => [
ParamValidator::PARAM_DEFAULT => 'ids|title',
ParamValidator::PARAM_ISMULTI => true,
ParamValidator::PARAM_TYPE => [
'ids',
'title',
'value',
],
ApiBase::PARAM_HELP_MSG_PER_VALUE => [],
],
'continue' => [
ApiBase::PARAM_HELP_MSG => 'api-help-param-continue',
],
'limit' => [
ParamValidator::PARAM_TYPE => 'limit',
ParamValidator::PARAM_DEFAULT => 10,
IntegerDef::PARAM_MIN => 1,
IntegerDef::PARAM_MAX => ApiBase::LIMIT_BIG1,
IntegerDef::PARAM_MAX2 => ApiBase::LIMIT_BIG2
],
'dir' => [
ParamValidator::PARAM_DEFAULT => 'ascending',
ParamValidator::PARAM_TYPE => [
'ascending',
'descending',
]
],
];
}
protected function getExamplesMessages() {
return [
'action=query&list=pageswithprop&pwppropname=displaytitle&pwpprop=ids|title|value'
=> 'apihelp-query+pageswithprop-example-simple',
'action=query&generator=pageswithprop&gpwppropname=notoc&prop=info'
=> 'apihelp-query+pageswithprop-example-generator',
];
}
public function getHelpUrls() {
return 'https://www.mediawiki.org/wiki/Special:MyLanguage/API:Pageswithprop';
}
}
/** @deprecated class alias since 1.43 */
class_alias( ApiQueryPagesWithProp::class, 'ApiQueryPagesWithProp' );

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