ApiQueryQueryPage.php

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<?php
class ApiQueryQueryPage extends ApiQueryGeneratorBase {
        private $qpMap;

        private $uselessQueryPages = array(
                'MIMEsearch', // aiprop=mime
                'LinkSearch', // list=exturlusage
                'FileDuplicateSearch', // prop=duplicatefiles
        );

        public function __construct( $query, $moduleName ) {
                parent::__construct( $query, $moduleName, 'qp' );
                // We need to do this to make sure $wgQueryPages is set up
                // This SUCKS
                global $IP;
                require_once( "$IP/includes/QueryPage.php" );

                // Build mapping from special page names to QueryPage classes
                global $wgQueryPages;
                $this->qpMap = array();
                foreach ( $wgQueryPages as $page ) {
                        if( !in_array( $page[1], $this->uselessQueryPages ) ) {
                                $this->qpMap[$page[1]] = $page[0];
                        }
                }
        }

        public function execute() {
                $this->run();
        }

        public function executeGenerator( $resultPageSet ) {
                $this->run( $resultPageSet );
        }

        public function run( $resultPageSet = null ) {
                global $wgQueryCacheLimit;

                $params = $this->extractRequestParams();
                $result = $this->getResult();

                $qp = new $this->qpMap[$params['page']]();
                if ( !$qp->userCanExecute( $this->getUser() ) ) {
                        $this->dieUsageMsg( 'specialpage-cantexecute' );
                }

                $r = array( 'name' => $params['page'] );
                if ( $qp->isCached() ) {
                        if ( !$qp->isCacheable() ) {
                                $r['disabled'] = '';
                        } else {
                                $r['cached'] = '';
                                $ts = $qp->getCachedTimestamp();
                                if ( $ts ) {
                                        $r['cachedtimestamp'] = wfTimestamp( TS_ISO_8601, $ts );
                                }
                                $r['maxresults'] = $wgQueryCacheLimit;
                        }
                }
                $result->addValue( array( 'query' ), $this->getModuleName(), $r );

                if ( $qp->isCached() && !$qp->isCacheable() ) {
                        // Disabled query page, don't run the query
                        return;
                }

                $res = $qp->doQuery( $params['offset'], $params['limit'] + 1 );
                $count = 0;
                $titles = array();
                foreach ( $res as $row ) {
                        if ( ++$count > $params['limit'] ) {
                                // We've had enough
                                $this->setContinueEnumParameter( 'offset', $params['offset'] + $params['limit'] );
                                break;
                        }

                        $title = Title::makeTitle( $row->namespace, $row->title );
                        if ( is_null( $resultPageSet ) ) {
                                $data = array( 'value' => $row->value );
                                if ( $qp->usesTimestamps() ) {
                                        $data['timestamp'] = wfTimestamp( TS_ISO_8601, $row->value );
                                }
                                self::addTitleInfo( $data, $title );

                                foreach ( $row as $field => $value ) {
                                        if ( !in_array( $field, array( 'namespace', 'title', 'value', 'qc_type' ) ) ) {
                                                $data['databaseResult'][$field] = $value;
                                        }
                                }

                                $fit = $result->addValue( array( 'query', $this->getModuleName(), 'results' ), null, $data );
                                if ( !$fit ) {
                                        $this->setContinueEnumParameter( 'offset', $params['offset'] + $count - 1 );
                                        break;
                                }
                        } else {
                                $titles[] = $title;
                        }
                }
                if ( is_null( $resultPageSet ) ) {
                        $result->setIndexedTagName_internal( array( 'query', $this->getModuleName(), 'results' ), 'page' );
                } else {
                        $resultPageSet->populateFromTitles( $titles );
                }
        }

        public function getCacheMode( $params ) {
                $qp = new $this->qpMap[$params['page']]();
                if ( $qp->getRestriction() != '' ) {
                        return 'private';
                }
                return 'public';
        }

        public function getAllowedParams() {
                return array(
                        'page' => array(
                                ApiBase::PARAM_TYPE => array_keys( $this->qpMap ),
                                ApiBase::PARAM_REQUIRED => true
                        ),
                        'offset' => 0,
                        'limit' => array(
                                ApiBase::PARAM_DFLT => 10,
                                ApiBase::PARAM_TYPE => 'limit',
                                ApiBase::PARAM_MIN => 1,
                                ApiBase::PARAM_MAX => ApiBase::LIMIT_BIG1,
                                ApiBase::PARAM_MAX2 => ApiBase::LIMIT_BIG2
                        ),
                );
        }

        public function getParamDescription() {
                return array(
                        'page' => 'The name of the special page. Note, this is case sensitive',
                        'offset' => 'When more results are available, use this to continue',
                        'limit' => 'Number of results to return',
                );
        }

        public function getResultProperties() {
                return array(
                        ApiBase::PROP_ROOT => array(
                                'name' => array(
                                        ApiBase::PROP_TYPE => 'string',
                                        ApiBase::PROP_NULLABLE => false
                                ),
                                'disabled' => array(
                                        ApiBase::PROP_TYPE => 'boolean',
                                        ApiBase::PROP_NULLABLE => false
                                ),
                                'cached' => array(
                                        ApiBase::PROP_TYPE => 'boolean',
                                        ApiBase::PROP_NULLABLE => false
                                ),
                                'cachedtimestamp' => array(
                                        ApiBase::PROP_TYPE => 'timestamp',
                                        ApiBase::PROP_NULLABLE => true
                                )
                        ),
                        '' => array(
                                'value' => 'string',
                                'timestamp' => array(
                                        ApiBase::PROP_TYPE => 'timestamp',
                                        ApiBase::PROP_NULLABLE => true
                                ),
                                'ns' => 'namespace',
                                'title' => 'string'
                        )
                );
        }

        public function getDescription() {
                return 'Get a list provided by a QueryPage-based special page';
        }

        public function getPossibleErrors() {
                return array_merge( parent::getPossibleErrors(), array(
                        array( 'specialpage-cantexecute' )
                ) );
        }

        public function getExamples() {
                return array(
                        'api.php?action=query&list=querypage&qppage=Ancientpages'
                );
        }
}