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<?php |
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namespace SESP; |
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use ArrayIterator; |
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use DatabaseLogEntry; |
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use DatabaseBase; |
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use MWTimestamp; |
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use Title; |
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use User; |
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class DatabaseLogReader { |
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private static $titleCache = []; |
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private $query; |
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private $log; |
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private $dbr; |
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private $titleKey; |
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private $type; |
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/** |
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* @param DatabaseaBase $dbr injected connection |
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* @param string $titleKey from page name |
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* @param string $type of log (default: approval) |
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*/ |
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public function __construct( DatabaseBase $dbr, $titleKey, $type = 'approval' ) { |
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$this->dbr = $dbr; |
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$this->titleKey = $titleKey; |
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$this->type = $type; |
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} |
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public function clearCache() { |
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self::$titleCache = []; |
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} |
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/** |
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* Take care of loading from the cache or filling the query. |
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*/ |
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private function init() { |
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if ( !$this->query ) { |
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if ( !isset( self::$titleCache[ $this->titleKey ] ) ) { |
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$this->query = DatabaseLogEntry::getSelectQueryData(); |
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$this->query['conds'] = [ |
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'log_type' => $this->type, |
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'log_title' => $this->titleKey |
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]; |
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$this->query['options'] = [ 'ORDER BY' => 'log_timestamp desc' ]; |
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self::$titleCache[ $this->titleKey ] = $this; |
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} else { |
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$cache = self::$titleCache[ $this->titleKey ]; |
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$this->query = $cache->getQuery(); |
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$this->log = $cache->getLog(); |
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} |
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} |
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} |
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/** |
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* Fetch the results using our conditions |
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* |
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* @return IResultWrapper |
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* @throws DBError |
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*/ |
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private function getLog() { |
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if ( !$this->log ) { |
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$query = $this->getQuery(); |
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$this->log = $this->dbr->select( |
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$query['tables'], $query['fields'], $query['conds'], |
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__METHOD__, $query['options'], $query['join_conds'] |
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); |
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if ( $this->log === null ) { |
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$this->log = new ArrayIterator( [ (object)[ |
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'user_id' => null, |
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'log_timestamp' => null, |
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'log_action' => null |
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] ] ); |
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} |
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} |
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return $this->log; |
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} |
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/** |
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* Fetch the query parameters for later calls |
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* |
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* @return array of parameters for SELECT call |
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*/ |
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public function getQuery() { |
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return $this->query; |
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} |
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/** |
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* @return User |
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*/ |
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public function getUserForLogEntry() { |
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$this->init(); |
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$logLine = $this->getLog()->current(); |
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if ( $logLine && $logLine->user_id ) { |
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return User::newFromID( $logLine->user_id ); |
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} |
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} |
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/** |
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* @return Timestamp |
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*/ |
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public function getDateOfLogEntry() { |
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$this->init(); |
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$logLine = $this->getLog()->current(); |
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if ( $logLine && $logLine->log_timestamp ) { |
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return new MWTimestamp( $logLine->log_timestamp ); |
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} |
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} |
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/** |
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* @return string |
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*/ |
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public function getStatusOfLogEntry() { |
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$this->init(); |
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$logLine = $this->getLog()->current(); |
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if ( $logLine && $logLine->log_action ) { |
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return $logLine->log_action; |
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} |
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} |
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} |
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SemanticMediaWiki /
SemanticExtraSpecialProperties
