includes/api/ApiQueryPrefixSearch.php

   1 <?php
   2
   3 /**
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License along
  15  * with this program; if not, write to the Free Software Foundation, Inc.,
  16  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  17  * http://www.gnu.org/copyleft/gpl.html
  18  *
  19  * @file
  20  * @since 1.23
  21  */
  22
  23 /**
  24  * @ingroup API
  25  */
  26 class ApiQueryPrefixSearch extends ApiQueryGeneratorBase {
  27         use SearchApi;
  28
  29         /** @var array list of api allowed params */
  30         private $allowedParams;
  31
  32         public function __construct( $query, $moduleName ) {
  33                 parent::__construct( $query, $moduleName, 'ps' );
  34         }
  35
  36         public function execute() {
  37                 $this->run();
  38         }
  39
  40         public function executeGenerator( $resultPageSet ) {
  41                 $this->run( $resultPageSet );
  42         }
  43
  44         /**
  45          * @param ApiPageSet $resultPageSet
  46          */
  47         private function run( $resultPageSet = null ) {
  48                 $params = $this->extractRequestParams();
  49                 $search = $params['search'];
  50                 $limit = $params['limit'];
  51                 $offset = $params['offset'];
  52
  53                 $searchEngine = $this->buildSearchEngine( $params );
  54                 $suggestions = $searchEngine->completionSearchWithVariants( $search );
  55                 $titles = $searchEngine->extractTitles( $suggestions );
  56
  57                 if ( $suggestions->hasMoreResults() ) {
  58                         $this->setContinueEnumParameter( 'offset', $offset + $limit );
  59                 }
  60
  61                 if ( $resultPageSet ) {
  62                         $resultPageSet->setRedirectMergePolicy( function ( array $current, array $new ) {
  63                                 if ( !isset( $current['index'] ) || $new['index'] < $current['index'] ) {
  64                                         $current['index'] = $new['index'];
  65                                 }
  66                                 return $current;
  67                         } );
  68                         $resultPageSet->populateFromTitles( $titles );
  69                         foreach ( $titles as $index => $title ) {
  70                                 $resultPageSet->setGeneratorData( $title, [ 'index' => $index + $offset + 1 ] );
  71                         }
  72                 } else {
  73                         $result = $this->getResult();
  74                         $count = 0;
  75                         foreach ( $titles as $title ) {
  76                                 $vals = [
  77                                         'ns' => (int)$title->getNamespace(),
  78                                         'title' => $title->getPrefixedText(),
  79                                 ];
  80                                 if ( $title->isSpecialPage() ) {
  81                                         $vals['special'] = true;
  82                                 } else {
  83                                         $vals['pageid'] = (int)$title->getArticleID();
  84                                 }
  85                                 $fit = $result->addValue( [ 'query', $this->getModuleName() ], null, $vals );
  86                                 ++$count;
  87                                 if ( !$fit ) {
  88                                         $this->setContinueEnumParameter( 'offset', $offset + $count );
  89                                         break;
  90                                 }
  91                         }
  92                         $result->addIndexedTagName(
  93                                 [ 'query', $this->getModuleName() ], $this->getModulePrefix()
  94                         );
  95                 }
  96         }
  97
  98         public function getCacheMode( $params ) {
  99                 return 'public';
 100         }
 101
 102         public function getAllowedParams() {
 103                 if ( $this->allowedParams !== null ) {
 104                         return $this->allowedParams;
 105                 }
 106                 $this->allowedParams = $this->buildCommonApiParams();
 107
 108                 return $this->allowedParams;
 109         }
 110
 111         public function getSearchProfileParams() {
 112                 return [
 113                         'profile' => [
 114                                 'profile-type' => SearchEngine::COMPLETION_PROFILE_TYPE,
 115                                 'help-message' => 'apihelp-query+prefixsearch-param-profile',
 116                         ],
 117                 ];
 118         }
 119
 120         protected function getExamplesMessages() {
 121                 return [
 122                         'action=query&list=prefixsearch&pssearch=meaning'
 123                                 => 'apihelp-query+prefixsearch-example-simple',
 124                 ];
 125         }
 126
 127         public function getHelpUrls() {
 128                 return 'https://www.mediawiki.org/wiki/Special:MyLanguage/API:Prefixsearch';
 129         }
 130 }