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<?php
/**
* Copyright © 2007 Roan Kattouw <roan.kattouw@gmail.com>
*
* 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
*/
namespace MediaWiki\Api;
use MediaWiki\Title\Title;
use Wikimedia\ParamValidator\ParamValidator;
use Wikimedia\ParamValidator\TypeDef\IntegerDef;
use Wikimedia\Rdbms\IExpression;
use Wikimedia\Rdbms\LikeValue;
/**
* Query module to enumerate all categories, even the ones that don't have
* category pages.
*
* @ingroup API
*/
class ApiQueryAllCategories extends ApiQueryGeneratorBase {
public function __construct( ApiQuery $query, string $moduleName ) {
parent::__construct( $query, $moduleName, 'ac' );
}
public function execute() {
$this->run();
}
public function getCacheMode( $params ) {
return 'public';
}
public function executeGenerator( $resultPageSet ) {
$this->run( $resultPageSet );
}
/**
* @param ApiPageSet|null $resultPageSet
*/
private function run( $resultPageSet = null ) {
$db = $this->getDB();
$params = $this->extractRequestParams();
$this->addTables( 'category' );
$this->addFields( 'cat_title' );
if ( $params['continue'] !== null ) {
$cont = $this->parseContinueParamOrDie( $params['continue'], [ 'string' ] );
$op = $params['dir'] == 'descending' ? '<=' : '>=';
$this->addWhere( $db->expr( 'cat_title', $op, $cont[0] ) );
}
$dir = ( $params['dir'] == 'descending' ? 'older' : 'newer' );
$from = ( $params['from'] === null
? null
: $this->titlePartToKey( $params['from'], NS_CATEGORY ) );
$to = ( $params['to'] === null
? null
: $this->titlePartToKey( $params['to'], NS_CATEGORY ) );
$this->addWhereRange( 'cat_title', $dir, $from, $to );
$min = $params['min'];
$max = $params['max'];
if ( $dir == 'newer' ) {
$this->addWhereRange( 'cat_pages', 'newer', $min, $max );
} else {
$this->addWhereRange( 'cat_pages', 'older', $max, $min );
}
if ( isset( $params['prefix'] ) ) {
$this->addWhere(
$db->expr(
'cat_title',
IExpression::LIKE,
new LikeValue( $this->titlePartToKey( $params['prefix'], NS_CATEGORY ), $db->anyString() )
)
);
}
$this->addOption( 'LIMIT', $params['limit'] + 1 );
$sort = ( $params['dir'] == 'descending' ? ' DESC' : '' );
$this->addOption( 'ORDER BY', 'cat_title' . $sort );
$prop = array_fill_keys( $params['prop'], true );
$this->addFieldsIf( [ 'cat_pages', 'cat_subcats', 'cat_files' ], isset( $prop['size'] ) );
if ( isset( $prop['hidden'] ) ) {
$this->addTables( [ 'page', 'page_props' ] );
$this->addJoinConds( [
'page' => [ 'LEFT JOIN', [
'page_namespace' => NS_CATEGORY,
'page_title=cat_title' ] ],
'page_props' => [ 'LEFT JOIN', [
'pp_page=page_id',
'pp_propname' => 'hiddencat' ] ],
] );
$this->addFields( [ 'cat_hidden' => 'pp_propname' ] );
}
$res = $this->select( __METHOD__ );
$pages = [];
$result = $this->getResult();
$count = 0;
foreach ( $res as $row ) {
if ( ++$count > $params['limit'] ) {
// We've reached the one extra which shows that there are
// additional cats to be had. Stop here...
$this->setContinueEnumParameter( 'continue', $row->cat_title );
break;
}
// Normalize titles
$titleObj = Title::makeTitle( NS_CATEGORY, $row->cat_title );
if ( $resultPageSet !== null ) {
$pages[] = $titleObj;
} else {
$item = [];
ApiResult::setContentValue( $item, 'category', $titleObj->getText() );
if ( isset( $prop['size'] ) ) {
$item['size'] = (int)$row->cat_pages;
$item['pages'] = $row->cat_pages - $row->cat_subcats - $row->cat_files;
$item['files'] = (int)$row->cat_files;
$item['subcats'] = (int)$row->cat_subcats;
}
if ( isset( $prop['hidden'] ) ) {
$item['hidden'] = (bool)$row->cat_hidden;
}
$fit = $result->addValue( [ 'query', $this->getModuleName() ], null, $item );
if ( !$fit ) {
$this->setContinueEnumParameter( 'continue', $row->cat_title );
break;
}
}
}
if ( $resultPageSet === null ) {
$result->addIndexedTagName( [ 'query', $this->getModuleName() ], 'c' );
} else {
$resultPageSet->populateFromTitles( $pages );
}
}
public function getAllowedParams() {
return [
'from' => null,
'continue' => [
ApiBase::PARAM_HELP_MSG => 'api-help-param-continue',
],
'to' => null,
'prefix' => null,
'dir' => [
ParamValidator::PARAM_DEFAULT => 'ascending',
ParamValidator::PARAM_TYPE => [
'ascending',
'descending'
],
],
'min' => [
ParamValidator::PARAM_TYPE => 'integer'
],
'max' => [
ParamValidator::PARAM_TYPE => 'integer'
],
'limit' => [
ParamValidator::PARAM_DEFAULT => 10,
ParamValidator::PARAM_TYPE => 'limit',
IntegerDef::PARAM_MIN => 1,
IntegerDef::PARAM_MAX => ApiBase::LIMIT_BIG1,
IntegerDef::PARAM_MAX2 => ApiBase::LIMIT_BIG2
],
'prop' => [
ParamValidator::PARAM_TYPE => [ 'size', 'hidden' ],
ParamValidator::PARAM_DEFAULT => '',
ParamValidator::PARAM_ISMULTI => true,
ApiBase::PARAM_HELP_MSG_PER_VALUE => [],
],
];
}
protected function getExamplesMessages() {
return [
'action=query&list=allcategories&acprop=size'
=> 'apihelp-query+allcategories-example-size',
'action=query&generator=allcategories&gacprefix=List&prop=info'
=> 'apihelp-query+allcategories-example-generator',
];
}
public function getHelpUrls() {
return 'https://www.mediawiki.org/wiki/Special:MyLanguage/API:Allcategories';
}
}
/** @deprecated class alias since 1.43 */
class_alias( ApiQueryAllCategories::class, 'ApiQueryAllCategories' );