MediaWiki  master
SearchApi.php
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1 <?php
3 
28 trait SearchApi {
29 
36  private static $BACKEND_NULL_PARAM = 'database-backed';
37 
46  public function buildCommonApiParams( $isScrollable = true ) {
47  $params = [
48  'search' => [
49  ApiBase::PARAM_TYPE => 'string',
51  ],
52  'namespace' => [
54  ApiBase::PARAM_TYPE => 'namespace',
55  ApiBase::PARAM_ISMULTI => true,
56  ],
57  'limit' => [
58  ApiBase::PARAM_DFLT => 10,
59  ApiBase::PARAM_TYPE => 'limit',
60  ApiBase::PARAM_MIN => 1,
63  ],
64  ];
65  if ( $isScrollable ) {
66  $params['offset'] = [
68  ApiBase::PARAM_TYPE => 'integer',
69  ApiBase::PARAM_HELP_MSG => 'api-help-param-continue',
70  ];
71  }
72 
73  $searchConfig = MediaWikiServices::getInstance()->getSearchEngineConfig();
74  $alternatives = $searchConfig->getSearchTypes();
75  if ( count( $alternatives ) > 1 ) {
76  if ( $alternatives[0] === null ) {
77  $alternatives[0] = self::$BACKEND_NULL_PARAM;
78  }
79  $params['backend'] = [
80  ApiBase::PARAM_DFLT => $searchConfig->getSearchType(),
81  ApiBase::PARAM_TYPE => $alternatives,
82  ];
83  // @todo: support profile selection when multiple
84  // backends are available. The solution could be to
85  // merge all possible profiles and let ApiBase
86  // subclasses do the check. Making ApiHelp and ApiSandbox
87  // comprehensive might be more difficult.
88  } else {
89  $params += $this->buildProfileApiParam();
90  }
91 
92  return $params;
93  }
94 
102  private function buildProfileApiParam() {
103  $configs = $this->getSearchProfileParams();
104  $searchEngine = MediaWikiServices::getInstance()->newSearchEngine();
105  $params = [];
106  foreach ( $configs as $paramName => $paramConfig ) {
107  $profiles = $searchEngine->getProfiles( $paramConfig['profile-type'],
108  $this->getContext()->getUser() );
109  if ( !$profiles ) {
110  continue;
111  }
112 
113  $types = [];
114  $helpMessages = [];
115  $defaultProfile = null;
116  foreach ( $profiles as $profile ) {
117  $types[] = $profile['name'];
118  if ( isset( $profile['desc-message'] ) ) {
119  $helpMessages[$profile['name']] = $profile['desc-message'];
120  }
121  if ( !empty( $profile['default'] ) ) {
122  $defaultProfile = $profile['name'];
123  }
124  }
125 
126  $params[$paramName] = [
127  ApiBase::PARAM_TYPE => $types,
128  ApiBase::PARAM_HELP_MSG => $paramConfig['help-message'],
129  ApiBase::PARAM_HELP_MSG_PER_VALUE => $helpMessages,
130  ApiBase::PARAM_DFLT => $defaultProfile,
131  ];
132  }
133 
134  return $params;
135  }
136 
150  public function buildSearchEngine( array $params = null ) {
151  if ( $params != null ) {
152  $type = $params['backend'] ?? null;
153  if ( $type === self::$BACKEND_NULL_PARAM ) {
154  $type = null;
155  }
156  $searchEngine = MediaWikiServices::getInstance()->getSearchEngineFactory()->create( $type );
157  $limit = $params['limit'];
158  $searchEngine->setNamespaces( $params['namespace'] );
159  $offset = $params['offset'] ?? null;
160  $searchEngine->setLimitOffset( $limit, $offset );
161 
162  // Initialize requested search profiles.
163  $configs = $this->getSearchProfileParams();
164  foreach ( $configs as $paramName => $paramConfig ) {
165  if ( isset( $params[$paramName] ) ) {
166  $searchEngine->setFeatureData(
167  $paramConfig['profile-type'],
168  $params[$paramName]
169  );
170  }
171  }
172  } else {
173  $searchEngine = MediaWikiServices::getInstance()->newSearchEngine();
174  }
175  return $searchEngine;
176  }
177 
182  abstract public function getSearchProfileParams();
183 
187  abstract public function getContext();
188 }
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const PARAM_TYPE
(string|string[]) Either an array of allowed value strings, or a string type as described below...
Definition: ApiBase.php:91
const LIMIT_BIG2
Fast query, apihighlimits limit.
Definition: ApiBase.php:258
const NS_MAIN
Definition: Defines.php:64
Apache License January AND DISTRIBUTION Definitions License shall mean the terms and conditions for use
getSearchProfileParams()
const PARAM_DFLT
(null|boolean|integer|string) Default value of the parameter.
Definition: ApiBase.php:52
const LIMIT_BIG1
Fast query, standard limit.
Definition: ApiBase.php:256
buildCommonApiParams( $isScrollable=true)
The set of api parameters that are shared between api calls that call the SearchEngine.
Definition: SearchApi.php:46
const PARAM_MAX
(integer) Max value allowed for the parameter, for PARAM_TYPE &#39;integer&#39; and &#39;limit&#39;.
Definition: ApiBase.php:94
const PARAM_REQUIRED
(boolean) Is the parameter required?
Definition: ApiBase.php:115
injection txt This is an overview of how MediaWiki makes use of dependency injection The design described here grew from the discussion of RFC T384 The term dependency this means that anything an object needs to operate should be injected from the the object itself should only know narrow no concrete implementation of the logic it relies on The requirement to inject everything typically results in an architecture that based on two main types of and essentially stateless service objects that use other service objects to operate on the value objects As of the beginning MediaWiki is only starting to use the DI approach Much of the code still relies on global state or direct resulting in a highly cyclical dependency MediaWikiServices
Definition: injection.txt:23
const PARAM_HELP_MSG_PER_VALUE
((string|array|Message)[]) When PARAM_TYPE is an array, this is an array mapping those values to $msg...
Definition: ApiBase.php:161
getContext()
$params
this hook is for auditing only or null if authentication failed before getting that far or null if we can t even determine that When $user is not null
Definition: hooks.txt:780
const PARAM_MAX2
(integer) Max value allowed for the parameter for users with the apihighlimits right, for PARAM_TYPE &#39;limit&#39;.
Definition: ApiBase.php:100
This document is intended to provide useful advice for parties seeking to redistribute MediaWiki to end users It s targeted particularly at maintainers for Linux since it s been observed that distribution packages of MediaWiki often break We ve consistently had to recommend that users seeking support use official tarballs instead of their distribution s and this often solves whatever problem the user is having It would be nice if this could such as
Definition: distributors.txt:9
const PARAM_HELP_MSG
(string|array|Message) Specify an alternative i18n documentation message for this parameter...
Definition: ApiBase.php:128
injection txt This is an overview of how MediaWiki makes use of dependency injection The design described here grew from the discussion of RFC T384 The term dependency this means that anything an object needs to operate should be injected from the the object itself should only know narrow no concrete implementation of the logic it relies on The requirement to inject everything typically results in an architecture that based on two main types of and essentially stateless service objects that use other service objects to operate on the value objects As of the beginning MediaWiki is only starting to use the DI approach Much of the code still relies on global state or direct resulting in a highly cyclical dependency which acts as the top level factory for services in MediaWiki which can be used to gain access to default instances of various services MediaWikiServices however also allows new services to be defined and default services to be redefined Services are defined or redefined by providing a callback the instantiator that will return a new instance of the service When it will create an instance of MediaWikiServices and populate it with the services defined in the files listed by thereby bootstrapping the DI framework Per $wgServiceWiringFiles lists includes ServiceWiring php
Definition: injection.txt:35
buildSearchEngine(array $params=null)
Build the search engine to use.
Definition: SearchApi.php:150
buildProfileApiParam()
Build the profile api param definitions.
Definition: SearchApi.php:102
const PARAM_ISMULTI
(boolean) Accept multiple pipe-separated values for this parameter (e.g.
Definition: ApiBase.php:55
const PARAM_MIN
(integer) Lowest value allowed for the parameter, for PARAM_TYPE &#39;integer&#39; and &#39;limit&#39;.
Definition: ApiBase.php:103