Complex classes like Util often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes. You can also have a look at the cohesion graph to spot any un-connected, or weakly-connected components.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
While breaking up the class, it is a good idea to analyze how other classes use Util, and based on these observations, apply Extract Interface, too.
| 1 | <?php  | 
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| 45 | class Util  | 
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| 46 | { | 
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| 47 | const SOLR_ISO_DATETIME_FORMAT = 'Y-m-d\TH:i:s\Z';  | 
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| 48 | |||
| 49 | /**  | 
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| 50 | * Generates a document id for documents representing page records.  | 
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| 51 | *  | 
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| 52 | * @param int $uid The page's uid  | 
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| 53 | * @param int $typeNum The page's typeNum  | 
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| 54 | * @param int $language the language id, defaults to 0  | 
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| 55 | * @param string $accessGroups comma separated list of uids of groups that have access to that page  | 
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| 56 | * @param string $mountPointParameter The mount point parameter that is used to access the page.  | 
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| 57 | * @return string The document id for that page  | 
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| 58 | */  | 
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| 59 | 42 | public static function getPageDocumentId(  | 
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| 81 | |||
| 82 | /**  | 
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| 83 | * Generates a document id in the form $siteHash/$type/$uid.  | 
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| 84 | *  | 
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| 85 | * @param string $table The records table name  | 
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| 86 | * @param int $pid The record's pid  | 
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| 87 | * @param int $uid The record's uid  | 
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| 88 | * @param string $additionalIdParameters Additional ID parameters  | 
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| 89 | * @return string A document id  | 
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| 90 | */  | 
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| 91 | 53 | public static function getDocumentId(  | 
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| 106 | |||
| 107 | /**  | 
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| 108 | * Converts a date from unix timestamp to ISO 8601 format.  | 
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| 109 | *  | 
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| 110 | * @param int $timestamp unix timestamp  | 
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| 111 | * @return string the date in ISO 8601 format  | 
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| 112 | */  | 
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| 113 | 56 | public static function timestampToIso($timestamp)  | 
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| 117 | |||
| 118 | /**  | 
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| 119 | * Converts a date from ISO 8601 format to unix timestamp.  | 
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| 120 | *  | 
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| 121 | * @param string $isoTime date in ISO 8601 format  | 
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| 122 | * @return int unix timestamp  | 
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| 123 | */  | 
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| 124 | 18 | public static function isoToTimestamp($isoTime)  | 
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| 130 | |||
| 131 | /**  | 
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| 132 | * Converts a date from unix timestamp to ISO 8601 format in UTC timezone.  | 
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| 133 | *  | 
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| 134 | * @param int $timestamp unix timestamp  | 
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| 135 | * @return string the date in ISO 8601 format  | 
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| 136 | */  | 
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| 137 | public static function timestampToUtcIso($timestamp)  | 
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| 141 | |||
| 142 | /**  | 
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| 143 | * Converts a date from ISO 8601 format in UTC timezone to unix timestamp.  | 
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| 144 | *  | 
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| 145 | * @param string $isoTime date in ISO 8601 format  | 
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| 146 | * @return int unix timestamp  | 
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| 147 | */  | 
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| 148 | public static function utcIsoToTimestamp($isoTime)  | 
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| 155 | |||
| 156 | /**  | 
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| 157 | * Returns given word as CamelCased.  | 
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| 158 | *  | 
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| 159 | * Converts a word like "send_email" to "SendEmail". It  | 
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| 160 | * will remove non alphanumeric characters from the word, so  | 
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| 161 | * "who's online" will be converted to "WhoSOnline"  | 
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| 162 | *  | 
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| 163 | * @param string $word Word to convert to camel case  | 
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| 164 | * @return string UpperCamelCasedWord  | 
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| 165 | */  | 
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| 166 | public static function camelize($word)  | 
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| 171 | |||
| 172 | /**  | 
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| 173 | * Returns a given CamelCasedString as an lowercase string with underscores.  | 
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| 174 | * Example: Converts BlogExample to blog_example, and minimalValue to minimal_value  | 
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| 175 | *  | 
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| 176 | * @param string $string String to be converted to lowercase underscore  | 
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| 177 | * @return string lowercase_and_underscored_string  | 
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| 178 | */  | 
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| 179 | public static function camelCaseToLowerCaseUnderscored($string)  | 
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| 183 | |||
| 184 | /**  | 
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| 185 | * Returns a given string with underscores as UpperCamelCase.  | 
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| 186 | * Example: Converts blog_example to BlogExample  | 
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| 187 | *  | 
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| 188 | * @param string $string String to be converted to camel case  | 
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| 189 | * @return string UpperCamelCasedWord  | 
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| 190 | */  | 
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| 191 | 26 | public static function underscoredToUpperCamelCase($string)  | 
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| 196 | |||
| 197 | /**  | 
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| 198 | * Shortcut to retrieve the TypoScript configuration for EXT:solr  | 
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| 199 | * (plugin.tx_solr) from TSFE.  | 
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| 200 | *  | 
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| 201 | * @return TypoScriptConfiguration  | 
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| 202 | */  | 
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| 203 | 148 | public static function getSolrConfiguration()  | 
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| 209 | |||
| 210 | /**  | 
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| 211 | * @return ConfigurationManager  | 
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| 212 | */  | 
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| 213 | 184 | private static function getConfigurationManager()  | 
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| 219 | |||
| 220 | /**  | 
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| 221 | * Gets the Solr configuration for a specific root page id.  | 
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| 222 | * To be used from the backend.  | 
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| 223 | *  | 
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| 224 | * @param int $pageId Id of the (root) page to get the Solr configuration from.  | 
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| 225 | * @param bool $initializeTsfe Optionally initializes a full TSFE to get the configuration, defaults to FALSE  | 
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| 226 | * @param int $language System language uid, optional, defaults to 0  | 
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| 227 | * @return TypoScriptConfiguration The Solr configuration for the requested tree.  | 
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| 228 | */  | 
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| 229 | 59 | public static function getSolrConfigurationFromPageId(  | 
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| 237 | |||
| 238 | /**  | 
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| 239 | * Loads the TypoScript configuration for a given page id and language.  | 
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| 240 | * Language usage may be disabled to get the default TypoScript  | 
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| 241 | * configuration.  | 
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| 242 | *  | 
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| 243 | * @param int $pageId Id of the (root) page to get the Solr configuration from.  | 
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| 244 | * @param string $path The TypoScript configuration path to retrieve.  | 
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| 245 | * @param bool $initializeTsfe Optionally initializes a full TSFE to get the configuration, defaults to FALSE  | 
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| 246 | * @param int|bool $language System language uid or FALSE to disable language usage, optional, defaults to 0  | 
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| 247 | * @param bool $useTwoLevelCache Flag to enable the two level cache for the typoscript configuration array  | 
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| 248 | * @return TypoScriptConfiguration The Solr configuration for the requested tree.  | 
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| 249 | */  | 
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| 250 | 61 | public static function getConfigurationFromPageId(  | 
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| 290 | |||
| 291 | |||
| 292 | /**  | 
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| 293 | * Initializes a TSFE, if required and builds an configuration array, containing the solr configuration.  | 
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| 294 | *  | 
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| 295 | * @param integer $pageId  | 
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| 296 | * @param string $path  | 
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| 297 | * @param boolean $initializeTsfe  | 
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| 298 | * @param integer $language  | 
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| 299 | * @return array  | 
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| 300 | */  | 
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| 301 | 60 | protected static function buildConfigurationArray($pageId, $path, $initializeTsfe, $language)  | 
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| 312 | |||
| 313 | /**  | 
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| 314 | * Builds the configuration object from a config array and returns it.  | 
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| 315 | *  | 
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| 316 | * @param array $configurationToUse  | 
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| 317 | * @param int $pageId  | 
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| 318 | * @param int $languageId  | 
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| 319 | * @param string $typoScriptPath  | 
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| 320 | * @return TypoScriptConfiguration  | 
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| 321 | */  | 
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| 322 | 61 | protected static function buildTypoScriptConfigurationFromArray(array $configurationToUse, $pageId, $languageId, $typoScriptPath)  | 
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| 327 | |||
| 328 | /**  | 
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| 329 | * This function is used to retrieve the configuration from a previous initialized TSFE  | 
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| 330 | * (see: getConfigurationFromPageId)  | 
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| 331 | *  | 
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| 332 | * @param string $path  | 
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| 333 | * @return mixed  | 
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| 334 | */  | 
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| 335 | 2 | private static function getConfigurationFromInitializedTSFE($path)  | 
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| 343 | |||
| 344 | /**  | 
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| 345 | * This function is used to retrieve the configuration from an existing TSFE instance  | 
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| 346 | * @param $pageId  | 
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| 347 | * @param $path  | 
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| 348 | * @param $language  | 
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| 349 | * @return mixed  | 
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| 350 | */  | 
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| 351 | 60 | private static function getConfigurationFromExistingTSFE($pageId, $path, $language)  | 
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| 395 | |||
| 396 | /**  | 
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| 397 | * Initializes the TSFE for a given page ID and language.  | 
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| 398 | *  | 
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| 399 | * @param int $pageId The page id to initialize the TSFE for  | 
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| 400 | * @param int $language System language uid, optional, defaults to 0  | 
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| 401 | * @param bool $useCache Use cache to reuse TSFE  | 
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| 402 | * @return void  | 
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| 403 | */  | 
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| 404 | 15 | public static function initializeTsfe(  | 
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| 469 | |||
| 470 | /**  | 
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| 471 | * Determines the rootpage ID for a given page.  | 
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| 472 | *  | 
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| 473 | * @param int $pageId A page ID somewhere in a tree.  | 
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| 474 | * @param bool $forceFallback Force the explicit detection and do not use the current frontend root line  | 
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| 475 | * @return int The page's tree branch's root page ID  | 
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| 476 | * @deprecated since 6.1 will be removed in 7.0  | 
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| 477 | 90 | */  | 
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| 478 | public function getRootPageId($pageId = 0, $forceFallback = false)  | 
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| 485 | 54 | ||
| 486 | /**  | 
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| 487 | * Takes a page Id and checks whether the page is marked as root page.  | 
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| 488 | *  | 
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| 489 | 90 | * @param int $pageId Page ID  | 
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| 490 | 47 | * @return bool TRUE if the page is marked as root page, FALSE otherwise  | 
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| 491 | 47 | * @deprecated since 6.1 will be removed in 7.0  | 
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| 492 | 47 | */  | 
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| 493 | public static function isRootPage($pageId)  | 
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| 500 | |||
| 501 | /**  | 
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| 502 | * Gets the site hash for a domain  | 
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| 503 | *  | 
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| 504 | * @deprecated since 6.1 will be removed in 7.0. use SiteHashService->getSiteHashForDomain now.  | 
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| 505 | 51 | * @param string $domain Domain to calculate the site hash for.  | 
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| 506 | * @return string site hash for $domain  | 
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| 507 | 51 | */  | 
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| 508 | 51 | public static function getSiteHashForDomain($domain)  | 
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| 515 | 51 | ||
| 516 | /**  | 
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| 517 | 51 | * Resolves magic keywords in allowed sites configuration.  | 
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| 518 | 1 | * Supported keywords:  | 
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| 519 | 1 | * __solr_current_site - The domain of the site the query has been started from  | 
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| 520 | 1 | * __current_site - Same as __solr_current_site  | 
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| 521 | 1 | * __all - Adds all domains as allowed sites  | 
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| 522 | * * - Means all sites are allowed, same as no siteHash  | 
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| 523 | *  | 
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| 524 | * @deprecated since 6.1 will be removed in 7.0. use SiteHashService->getAllowedSitesForPageIdAndAllowedSitesConfiguration now.  | 
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| 525 | 50 | * @param int $pageId A page ID that is then resolved to the site it belongs to  | 
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| 526 | 50 | * @param string $allowedSitesConfiguration TypoScript setting for allowed sites  | 
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| 527 | * @return string List of allowed sites/domains, magic keywords resolved  | 
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| 528 | 50 | */  | 
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| 529 | public static function resolveSiteHashAllowedSites($pageId, $allowedSitesConfiguration)  | 
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| 536 | |||
| 537 | /**  | 
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| 538 | * Check if record ($table, $uid) is a workspace record  | 
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| 539 | *  | 
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| 540 | * @param string $table The table the record belongs to  | 
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| 541 | * @param int $uid The record's uid  | 
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| 542 | * @return bool TRUE if the record is in a draft workspace, FALSE if it's a LIVE record  | 
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| 543 | */  | 
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| 544 | public static function isDraftRecord($table, $uid)  | 
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| 558 | |||
| 559 | /**  | 
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| 560 | * Checks whether a record is a localization overlay.  | 
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| 561 | *  | 
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| 562 | * @param string $tableName The record's table name  | 
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| 563 | * @param array $record The record to check  | 
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| 564 | * @return bool TRUE if the record is a language overlay, FALSE otherwise  | 
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| 565 | */  | 
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| 566 | public static function isLocalizedRecord($tableName, array $record)  | 
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| 580 | |||
| 581 | /**  | 
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| 582 | * Check if the page type of a page record is allowed  | 
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| 583 | *  | 
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| 584 | * @param array $pageRecord The pages database row  | 
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| 585 | * @param string $configurationName The name of the configuration to use.  | 
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| 586 | 35 | *  | 
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| 587 | * @return bool TRUE if the page type is allowed, otherwise FALSE  | 
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| 588 | */  | 
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| 589 | public static function isAllowedPageType(array $pageRecord, $configurationName = 'pages')  | 
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| 601 | 6 | ||
| 602 | /**  | 
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| 603 | 6 | * Get allowed page types  | 
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| 604 | 3 | *  | 
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| 605 | * @param int $pageId Page ID  | 
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| 606 | * @param string $configurationName The name of the configuration to use.  | 
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| 607 | *  | 
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| 608 | 28 | * @return array Allowed page types to compare to a doktype of a page record  | 
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| 609 | */  | 
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| 610 | public static function getAllowedPageTypes($pageId, $configurationName = 'pages')  | 
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| 616 | |||
| 617 | /**  | 
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| 618 | * Method to check if a page exists.  | 
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| 619 | 27 | *  | 
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| 620 | * @param int $pageId  | 
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| 621 | 27 | * @return bool  | 
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| 622 | 27 | */  | 
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| 623 | 27 | public static function pageExists($pageId)  | 
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| 633 | |||
| 634 | /**  | 
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| 635 | * Resolves the configured absRefPrefix to a valid value and resolved if absRefPrefix  | 
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| 636 | * is set to "auto".  | 
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| 637 | *  | 
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| 638 | * @param TypoScriptFrontendController $TSFE  | 
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| 639 | * @return string  | 
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| 640 | 27 | */  | 
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| 641 | public static function getAbsRefPrefixFromTSFE(TypoScriptFrontendController $TSFE)  | 
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| 655 | |||
| 656 | /**  | 
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| 657 | * This function can be used to check if one of the strings in needles is  | 
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| 658 | * contained in the haystack.  | 
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| 659 | *  | 
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| 660 | *  | 
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| 661 | * Example:  | 
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| 662 | *  | 
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| 663 | * haystack: the brown fox  | 
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| 664 | * needles: ['hello', 'world']  | 
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| 665 | * result: false  | 
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| 666 | *  | 
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| 667 | * haystack: the brown fox  | 
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| 668 | * needles: ['is', 'fox']  | 
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| 669 | * result: true  | 
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| 670 | *  | 
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| 671 | 15 | * @param string $haystack  | 
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| 672 | * @param array $needles  | 
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| 673 | 15 | * @return bool  | 
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| 674 | 15 | */  | 
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| 675 | 12 | public static function containsOneOfTheStrings($haystack, array $needles)  | 
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| 686 | }  | 
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| 687 |