5 * Created on July 30, 2007
7 * Copyright © 2007 Yuri Astrakhan <Firstname><Lastname>@gmail.com
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License along
20 * with this program; if not, write to the Free Software Foundation, Inc.,
21 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
22 * http://www.gnu.org/copyleft/gpl.html
27 if ( !defined( 'MEDIAWIKI' ) ) {
28 // Eclipse helper - will be ignored in production
29 require_once( 'ApiQueryBase.php' );
33 * Query module to perform full text search within wiki titles and content
37 class ApiQuerySearch
extends ApiQueryGeneratorBase
{
39 public function __construct( $query, $moduleName ) {
40 parent
::__construct( $query, $moduleName, 'sr' );
43 public function execute() {
47 public function executeGenerator( $resultPageSet ) {
48 $this->run( $resultPageSet );
52 * @param $resultPageSet ApiPageSet
55 private function run( $resultPageSet = null ) {
57 $params = $this->extractRequestParams();
60 $limit = $params['limit'];
61 $query = $params['search'];
62 $what = $params['what'];
63 $searchInfo = array_flip( $params['info'] );
64 $prop = array_flip( $params['prop'] );
66 // Create search engine instance and set options
67 $search = SearchEngine
::create();
68 $search->setLimitOffset( $limit +
1, $params['offset'] );
69 $search->setNamespaces( $params['namespace'] );
70 $search->showRedirects
= $params['redirects'];
72 // Perform the actual search
73 if ( $what == 'text' ) {
74 $matches = $search->searchText( $query );
75 } elseif ( $what == 'title' ) {
76 $matches = $search->searchTitle( $query );
77 } elseif ( $what == 'nearmatch' ) {
78 $matches = SearchEngine
::getNearMatchResultSet( $query );
80 // We default to title searches; this is a terrible legacy
81 // of the way we initially set up the MySQL fulltext-based
82 // search engine with separate title and text fields.
83 // In the future, the default should be for a combined index.
85 $matches = $search->searchTitle( $query );
87 // Not all search engines support a separate title search,
88 // for instance the Lucene-based engine we use on Wikipedia.
89 // In this case, fall back to full-text search (which will
90 // include titles in it!)
91 if ( is_null( $matches ) ) {
93 $matches = $search->searchText( $query );
96 if ( is_null( $matches ) ) {
97 $this->dieUsage( "{$what} search is disabled", "search-{$what}-disabled" );
100 // Add search meta data to result
101 if ( isset( $searchInfo['totalhits'] ) ) {
102 $totalhits = $matches->getTotalHits();
103 if ( $totalhits !== null ) {
104 $this->getResult()->addValue( array( 'query', 'searchinfo' ),
105 'totalhits', $totalhits );
108 if ( isset( $searchInfo['suggestion'] ) && $matches->hasSuggestion() ) {
109 $this->getResult()->addValue( array( 'query', 'searchinfo' ),
110 'suggestion', $matches->getSuggestionQuery() );
113 // Add the search results to the result
114 $terms = $wgContLang->convertForSearchResult( $matches->termMatches() );
117 while ( $result = $matches->next() ) {
118 if ( ++
$count > $limit ) {
119 // We've reached the one extra which shows that there are additional items to be had. Stop here...
120 $this->setContinueEnumParameter( 'offset', $params['offset'] +
$params['limit'] );
124 // Silently skip broken and missing titles
125 if ( $result->isBrokenTitle() ||
$result->isMissingRevision() ) {
129 $title = $result->getTitle();
130 if ( is_null( $resultPageSet ) ) {
132 ApiQueryBase
::addTitleInfo( $vals, $title );
134 if ( isset( $prop['snippet'] ) ) {
135 $vals['snippet'] = $result->getTextSnippet( $terms );
137 if ( isset( $prop['size'] ) ) {
138 $vals['size'] = $result->getByteSize();
140 if ( isset( $prop['wordcount'] ) ) {
141 $vals['wordcount'] = $result->getWordCount();
143 if ( isset( $prop['timestamp'] ) ) {
144 $vals['timestamp'] = wfTimestamp( TS_ISO_8601
, $result->getTimestamp() );
146 if ( !is_null( $result->getScore() ) && isset( $prop['score'] ) ) {
147 $vals['score'] = $result->getScore();
149 if ( isset( $prop['titlesnippet'] ) ) {
150 $vals['titlesnippet'] = $result->getTitleSnippet( $terms );
152 if ( !is_null( $result->getRedirectTitle() ) ) {
153 if ( isset( $prop['redirecttitle'] ) ) {
154 $vals['redirecttitle'] = $result->getRedirectTitle();
156 if ( isset( $prop['redirectsnippet'] ) ) {
157 $vals['redirectsnippet'] = $result->getRedirectSnippet( $terms );
160 if ( !is_null( $result->getSectionTitle() ) ) {
161 if ( isset( $prop['sectiontitle'] ) ) {
162 $vals['sectiontitle'] = $result->getSectionTitle();
164 if ( isset( $prop['sectionsnippet'] ) ) {
165 $vals['sectionsnippet'] = $result->getSectionSnippet();
168 if ( isset( $prop['hasrelated'] ) && $result->hasRelated() ) {
169 $vals['hasrelated'] = "";
172 // Add item to results and see whether it fits
173 $fit = $this->getResult()->addValue( array( 'query', $this->getModuleName() ),
176 $this->setContinueEnumParameter( 'offset', $params['offset'] +
$count - 1 );
184 if ( is_null( $resultPageSet ) ) {
185 $this->getResult()->setIndexedTagName_internal( array(
186 'query', $this->getModuleName()
189 $resultPageSet->populateFromTitles( $titles );
193 public function getCacheMode( $params ) {
197 public function getAllowedParams() {
200 ApiBase
::PARAM_TYPE
=> 'string',
201 ApiBase
::PARAM_REQUIRED
=> true
203 'namespace' => array(
204 ApiBase
::PARAM_DFLT
=> 0,
205 ApiBase
::PARAM_TYPE
=> 'namespace',
206 ApiBase
::PARAM_ISMULTI
=> true,
209 ApiBase
::PARAM_DFLT
=> null,
210 ApiBase
::PARAM_TYPE
=> array(
217 ApiBase
::PARAM_DFLT
=> 'totalhits|suggestion',
218 ApiBase
::PARAM_TYPE
=> array(
222 ApiBase
::PARAM_ISMULTI
=> true,
225 ApiBase
::PARAM_DFLT
=> 'size|wordcount|timestamp|snippet',
226 ApiBase
::PARAM_TYPE
=> array(
239 ApiBase
::PARAM_ISMULTI
=> true,
241 'redirects' => false,
244 ApiBase
::PARAM_DFLT
=> 10,
245 ApiBase
::PARAM_TYPE
=> 'limit',
246 ApiBase
::PARAM_MIN
=> 1,
247 ApiBase
::PARAM_MAX
=> ApiBase
::LIMIT_SML1
,
248 ApiBase
::PARAM_MAX2
=> ApiBase
::LIMIT_SML2
253 public function getParamDescription() {
255 'search' => 'Search for all page titles (or content) that has this value',
256 'namespace' => 'The namespace(s) to enumerate',
257 'what' => 'Search inside the text or titles',
258 'info' => 'What metadata to return',
260 'What properties to return',
261 ' size - Adds the size of the page in bytes',
262 ' wordcount - Adds the word count of the page',
263 ' timestamp - Adds the timestamp of when the page was last edited',
264 ' score - Adds the score (if any) from the search engine',
265 ' snippet - Adds a parsed snippet of the page',
266 ' titlesnippet - Adds a parsed snippet of the page title',
267 ' redirectsnippet - Adds a parsed snippet of the redirect',
268 ' redirecttitle - Adds a parsed snippet of the redirect title',
269 ' sectionsnippet - Adds a parsed snippet of the matching section',
270 ' sectiontitle - Adds a parsed snippet of the matching section title',
271 ' hasrelated - Indicates whether a related search is available',
273 'redirects' => 'Include redirect pages in the search',
274 'offset' => 'Use this value to continue paging (return by query)',
275 'limit' => 'How many total pages to return'
279 public function getDescription() {
280 return 'Perform a full text search';
283 public function getPossibleErrors() {
284 return array_merge( parent
::getPossibleErrors(), array(
285 array( 'code' => 'search-text-disabled', 'info' => 'text search is disabled' ),
286 array( 'code' => 'search-title-disabled', 'info' => 'title search is disabled' ),
290 protected function getExamples() {
292 'api.php?action=query&list=search&srsearch=meaning',
293 'api.php?action=query&list=search&srwhat=text&srsearch=meaning',
294 'api.php?action=query&generator=search&gsrsearch=meaning&prop=info',
298 public function getVersion() {
299 return __CLASS__
. ': $Id$';