Merge "Cleaned up variable/type order in docs."
[lhc/web/wiklou.git] / includes / api / ApiQuerySearch.php
index 9827b47..0349830 100644 (file)
@@ -1,11 +1,10 @@
 <?php
-
-/*
- * Created on July 30, 2007
+/**
  *
- * API for MediaWiki 1.8+
  *
- * Copyright (C) 2007 Yuri Astrakhan <Firstname><Lastname>@gmail.com
+ * Created on July 30, 2007
+ *
+ * Copyright © 2007 Yuri Astrakhan "<Firstname><Lastname>@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
  *
  * 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.,
- * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  * http://www.gnu.org/copyleft/gpl.html
+ *
+ * @file
  */
 
-if (!defined('MEDIAWIKI')) {
-       // Eclipse helper - will be ignored in production
-       require_once ('ApiQueryBase.php');
-}
-
 /**
  * Query module to perform full text search within wiki titles and content
  *
@@ -36,7 +32,7 @@ if (!defined('MEDIAWIKI')) {
 class ApiQuerySearch extends ApiQueryGeneratorBase {
 
        public function __construct( $query, $moduleName ) {
-               parent :: __construct($query, $moduleName, 'sr');
+               parent::__construct( $query, $moduleName, 'sr' );
        }
 
        public function execute() {
@@ -47,6 +43,10 @@ class ApiQuerySearch extends ApiQueryGeneratorBase {
                $this->run( $resultPageSet );
        }
 
+       /**
+        * @param $resultPageSet ApiPageSet
+        * @return void
+        */
        private function run( $resultPageSet = null ) {
                global $wgContLang;
                $params = $this->extractRequestParams();
@@ -57,21 +57,23 @@ class ApiQuerySearch extends ApiQueryGeneratorBase {
                $what = $params['what'];
                $searchInfo = array_flip( $params['info'] );
                $prop = array_flip( $params['prop'] );
-               
-               if ( strval( $query ) === '' )
-                       $this->dieUsage( "empty search string is not allowed", 'param-search' );
 
                // Create search engine instance and set options
                $search = SearchEngine::create();
-               $search->setLimitOffset( $limit+1, $params['offset'] );
+               $search->setLimitOffset( $limit + 1, $params['offset'] );
                $search->setNamespaces( $params['namespace'] );
                $search->showRedirects = $params['redirects'];
 
+               $query = $search->transformSearchTerm( $query );
+               $query = $search->replacePrefixes( $query );
+
                // Perform the actual search
                if ( $what == 'text' ) {
                        $matches = $search->searchText( $query );
-               } elseif( $what == 'title' ) {
+               } elseif ( $what == 'title' ) {
                        $matches = $search->searchTitle( $query );
+               } elseif ( $what == 'nearmatch' ) {
+                       $matches = SearchEngine::getNearMatchResultSet( $query );
                } else {
                        // We default to title searches; this is a terrible legacy
                        // of the way we initially set up the MySQL fulltext-based
@@ -79,37 +81,43 @@ class ApiQuerySearch extends ApiQueryGeneratorBase {
                        // In the future, the default should be for a combined index.
                        $what = 'title';
                        $matches = $search->searchTitle( $query );
-                       
+
                        // Not all search engines support a separate title search,
                        // for instance the Lucene-based engine we use on Wikipedia.
                        // In this case, fall back to full-text search (which will
                        // include titles in it!)
-                       if( is_null( $matches ) ) {
+                       if ( is_null( $matches ) ) {
                                $what = 'text';
                                $matches = $search->searchText( $query );
                        }
                }
-               if ( is_null( $matches ) )
+               if ( is_null( $matches ) ) {
                        $this->dieUsage( "{$what} search is disabled", "search-{$what}-disabled" );
-               
+               } elseif ( $matches instanceof Status && !$matches->isGood() ) {
+                       $this->dieUsage( $matches->getWikiText(), 'search-error' );
+               }
+
+               $apiResult = $this->getResult();
                // Add search meta data to result
                if ( isset( $searchInfo['totalhits'] ) ) {
                        $totalhits = $matches->getTotalHits();
-                       if( $totalhits !== null ) {
-                               $this->getResult()->addValue( array( 'query', 'searchinfo' ), 
+                       if ( $totalhits !== null ) {
+                               $apiResult->addValue( array( 'query', 'searchinfo' ),
                                                'totalhits', $totalhits );
                        }
                }
                if ( isset( $searchInfo['suggestion'] ) && $matches->hasSuggestion() ) {
-                       $this->getResult()->addValue( array( 'query', 'searchinfo' ), 
+                       $apiResult->addValue( array( 'query', 'searchinfo' ),
                                                'suggestion', $matches->getSuggestionQuery() );
                }
 
                // Add the search results to the result
                $terms = $wgContLang->convertForSearchResult( $matches->termMatches() );
-               $titles = array ();
+               $titles = array();
                $count = 0;
-               while ( $result = $matches->next() ) {
+               $result = $matches->next();
+
+               while ( $result ) {
                        if ( ++ $count > $limit ) {
                                // We've reached the one extra which shows that there are additional items to be had. Stop here...
                                $this->setContinueEnumParameter( 'offset', $params['offset'] + $params['limit'] );
@@ -117,25 +125,56 @@ class ApiQuerySearch extends ApiQueryGeneratorBase {
                        }
 
                        // Silently skip broken and missing titles
-                       if ( $result->isBrokenTitle() || $result->isMissingRevision() )
+                       if ( $result->isBrokenTitle() || $result->isMissingRevision() ) {
+                               $result = $matches->next();
                                continue;
-                       
+                       }
+
                        $title = $result->getTitle();
                        if ( is_null( $resultPageSet ) ) {
                                $vals = array();
                                ApiQueryBase::addTitleInfo( $vals, $title );
-                               
-                               if ( isset( $prop['snippet'] ) )
+
+                               if ( isset( $prop['snippet'] ) ) {
                                        $vals['snippet'] = $result->getTextSnippet( $terms );
-                               if ( isset( $prop['size'] ) )
+                               }
+                               if ( isset( $prop['size'] ) ) {
                                        $vals['size'] = $result->getByteSize();
-                               if ( isset( $prop['wordcount'] ) )
+                               }
+                               if ( isset( $prop['wordcount'] ) ) {
                                        $vals['wordcount'] = $result->getWordCount();
-                               if ( isset( $prop['timestamp'] ) )
+                               }
+                               if ( isset( $prop['timestamp'] ) ) {
                                        $vals['timestamp'] = wfTimestamp( TS_ISO_8601, $result->getTimestamp() );
-                               
+                               }
+                               if ( !is_null( $result->getScore() ) && isset( $prop['score'] ) ) {
+                                       $vals['score'] = $result->getScore();
+                               }
+                               if ( isset( $prop['titlesnippet'] ) ) {
+                                       $vals['titlesnippet'] = $result->getTitleSnippet( $terms );
+                               }
+                               if ( !is_null( $result->getRedirectTitle() ) ) {
+                                       if ( isset( $prop['redirecttitle'] ) ) {
+                                               $vals['redirecttitle'] = $result->getRedirectTitle();
+                                       }
+                                       if ( isset( $prop['redirectsnippet'] ) ) {
+                                               $vals['redirectsnippet'] = $result->getRedirectSnippet( $terms );
+                                       }
+                               }
+                               if ( !is_null( $result->getSectionTitle() ) ) {
+                                       if ( isset( $prop['sectiontitle'] ) ) {
+                                               $vals['sectiontitle'] = $result->getSectionTitle()->getFragment();
+                                       }
+                                       if ( isset( $prop['sectionsnippet'] ) ) {
+                                               $vals['sectionsnippet'] = $result->getSectionSnippet();
+                                       }
+                               }
+                               if ( isset( $prop['hasrelated'] ) && $result->hasRelated() ) {
+                                       $vals['hasrelated'] = '';
+                               }
+
                                // Add item to results and see whether it fits
-                               $fit = $this->getResult()->addValue( array( 'query', $this->getModuleName() ), 
+                               $fit = $apiResult->addValue( array( 'query', $this->getModuleName() ),
                                                null, $vals );
                                if ( !$fit ) {
                                        $this->setContinueEnumParameter( 'offset', $params['offset'] + $count - 1 );
@@ -144,10 +183,12 @@ class ApiQuerySearch extends ApiQueryGeneratorBase {
                        } else {
                                $titles[] = $title;
                        }
+
+                       $result = $matches->next();
                }
 
                if ( is_null( $resultPageSet ) ) {
-                       $this->getResult()->setIndexedTagName_internal( array(
+                       $apiResult->setIndexedTagName_internal( array(
                                                'query', $this->getModuleName()
                                        ), 'p' );
                } else {
@@ -155,61 +196,146 @@ class ApiQuerySearch extends ApiQueryGeneratorBase {
                }
        }
 
+       public function getCacheMode( $params ) {
+               return 'public';
+       }
+
        public function getAllowedParams() {
-               return array (
-                       'search' => null,
-                       'namespace' => array (
-                               ApiBase :: PARAM_DFLT => 0,
-                               ApiBase :: PARAM_TYPE => 'namespace',
-                               ApiBase :: PARAM_ISMULTI => true,
-                       ),
-                       'what' => array (
-                               ApiBase :: PARAM_DFLT => null,
-                               ApiBase :: PARAM_TYPE => array (
+               return array(
+                       'search' => array(
+                               ApiBase::PARAM_TYPE => 'string',
+                               ApiBase::PARAM_REQUIRED => true
+                       ),
+                       'namespace' => array(
+                               ApiBase::PARAM_DFLT => NS_MAIN,
+                               ApiBase::PARAM_TYPE => 'namespace',
+                               ApiBase::PARAM_ISMULTI => true,
+                       ),
+                       'what' => array(
+                               ApiBase::PARAM_DFLT => null,
+                               ApiBase::PARAM_TYPE => array(
                                        'title',
                                        'text',
+                                       'nearmatch',
                                )
                        ),
                        'info' => array(
-                               ApiBase :: PARAM_DFLT => 'totalhits|suggestion',
-                               ApiBase :: PARAM_TYPE => array (
+                               ApiBase::PARAM_DFLT => 'totalhits|suggestion',
+                               ApiBase::PARAM_TYPE => array(
                                        'totalhits',
                                        'suggestion',
                                ),
-                               ApiBase :: PARAM_ISMULTI => true,
+                               ApiBase::PARAM_ISMULTI => true,
                        ),
                        'prop' => array(
-                               ApiBase :: PARAM_DFLT => 'size|wordcount|timestamp|snippet',
-                               ApiBase :: PARAM_TYPE => array (
+                               ApiBase::PARAM_DFLT => 'size|wordcount|timestamp|snippet',
+                               ApiBase::PARAM_TYPE => array(
                                        'size',
                                        'wordcount',
                                        'timestamp',
+                                       'score',
                                        'snippet',
+                                       'titlesnippet',
+                                       'redirecttitle',
+                                       'redirectsnippet',
+                                       'sectiontitle',
+                                       'sectionsnippet',
+                                       'hasrelated',
                                ),
-                               ApiBase :: PARAM_ISMULTI => true,
+                               ApiBase::PARAM_ISMULTI => true,
                        ),
                        'redirects' => false,
                        'offset' => 0,
-                       'limit' => array (
-                               ApiBase :: PARAM_DFLT => 10,
-                               ApiBase :: PARAM_TYPE => 'limit',
-                               ApiBase :: PARAM_MIN => 1,
-                               ApiBase :: PARAM_MAX => ApiBase :: LIMIT_SML1,
-                               ApiBase :: PARAM_MAX2 => ApiBase :: LIMIT_SML2
+                       'limit' => array(
+                               ApiBase::PARAM_DFLT => 10,
+                               ApiBase::PARAM_TYPE => 'limit',
+                               ApiBase::PARAM_MIN => 1,
+                               ApiBase::PARAM_MAX => ApiBase::LIMIT_SML1,
+                               ApiBase::PARAM_MAX2 => ApiBase::LIMIT_SML2
                        )
                );
        }
 
        public function getParamDescription() {
-               return array (
-                       'search' => 'Search for all page titles (or content) that has this value.',
-                       'namespace' => 'The namespace(s) to enumerate.',
-                       'what' => 'Search inside the text or titles.',
-                       'info' => 'What metadata to return.',
-                       'prop' => 'What properties to return.',
-                       'redirects' => 'Include redirect pages in the search.',
+               return array(
+                       'search' => 'Search for all page titles (or content) that has this value',
+                       'namespace' => 'The namespace(s) to enumerate',
+                       'what' => 'Search inside the text or titles',
+                       'info' => 'What metadata to return',
+                       'prop' => array(
+                               'What properties to return',
+                               ' size             - Adds the size of the page in bytes',
+                               ' wordcount        - Adds the word count of the page',
+                               ' timestamp        - Adds the timestamp of when the page was last edited',
+                               ' score            - Adds the score (if any) from the search engine',
+                               ' snippet          - Adds a parsed snippet of the page',
+                               ' titlesnippet     - Adds a parsed snippet of the page title',
+                               ' redirectsnippet  - Adds a parsed snippet of the redirect title',
+                               ' redirecttitle    - Adds the title of the matching redirect',
+                               ' sectionsnippet   - Adds a parsed snippet of the matching section title',
+                               ' sectiontitle     - Adds the title of the matching section',
+                               ' hasrelated       - Indicates whether a related search is available',
+                       ),
+                       'redirects' => 'Include redirect pages in the search',
                        'offset' => 'Use this value to continue paging (return by query)',
-                       'limit' => 'How many total pages to return.'
+                       'limit' => 'How many total pages to return'
+               );
+       }
+
+       public function getResultProperties() {
+               return array(
+                       '' => array(
+                               'ns' => 'namespace',
+                               'title' => 'string'
+                       ),
+                       'snippet' => array(
+                               'snippet' => 'string'
+                       ),
+                       'size' => array(
+                               'size' => 'integer'
+                       ),
+                       'wordcount' => array(
+                               'wordcount' => 'integer'
+                       ),
+                       'timestamp' => array(
+                               'timestamp' => 'timestamp'
+                       ),
+                       'score' => array(
+                               'score' => array(
+                                       ApiBase::PROP_TYPE => 'string',
+                                       ApiBase::PROP_NULLABLE => true
+                               )
+                       ),
+                       'titlesnippet' => array(
+                               'titlesnippet' => 'string'
+                       ),
+                       'redirecttitle' => array(
+                               'redirecttitle' => array(
+                                       ApiBase::PROP_TYPE => 'string',
+                                       ApiBase::PROP_NULLABLE => true
+                               )
+                       ),
+                       'redirectsnippet' => array(
+                               'redirectsnippet' => array(
+                                       ApiBase::PROP_TYPE => 'string',
+                                       ApiBase::PROP_NULLABLE => true
+                               )
+                       ),
+                       'sectiontitle' => array(
+                               'sectiontitle' => array(
+                                       ApiBase::PROP_TYPE => 'string',
+                                       ApiBase::PROP_NULLABLE => true
+                               )
+                       ),
+                       'sectionsnippet' => array(
+                               'sectionsnippet' => array(
+                                       ApiBase::PROP_TYPE => 'string',
+                                       ApiBase::PROP_NULLABLE => true
+                               )
+                       ),
+                       'hasrelated' => array(
+                               'hasrelated' => 'boolean'
+                       )
                );
        }
 
@@ -217,15 +343,23 @@ class ApiQuerySearch extends ApiQueryGeneratorBase {
                return 'Perform a full text search';
        }
 
-       protected function getExamples() {
-               return array (
+       public function getPossibleErrors() {
+               return array_merge( parent::getPossibleErrors(), array(
+                       array( 'code' => 'search-text-disabled', 'info' => 'text search is disabled' ),
+                       array( 'code' => 'search-title-disabled', 'info' => 'title search is disabled' ),
+                       array( 'code' => 'search-error', 'info' => 'search error has occurred' ),
+               ) );
+       }
+
+       public function getExamples() {
+               return array(
                        'api.php?action=query&list=search&srsearch=meaning',
                        'api.php?action=query&list=search&srwhat=text&srsearch=meaning',
                        'api.php?action=query&generator=search&gsrsearch=meaning&prop=info',
                );
        }
 
-       public function getVersion() {
-               return __CLASS__ . ': $Id$';
+       public function getHelpUrls() {
+               return 'https://www.mediawiki.org/wiki/API:Search';
        }
 }