API
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Access
3 months ago
Application
3 months ago
Archive
3 months ago
ArchiveProcessor
3 months ago
Archiver
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AssetManager
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Auth
6 months ago
Category
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Changes
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CliMulti
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Columns
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Concurrency
3 months ago
Config
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Container
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CronArchive
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DataAccess
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DataFiles
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DataTable
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Db
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DeviceDetector
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Email
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Exception
4 months ago
Http
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Intl
3 months ago
Log
2 years ago
Mail
1 year ago
Measurable
6 months ago
Menu
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Metrics
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Notification
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Period
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Plugin
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Policy
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ProfessionalServices
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Report
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ReportRenderer
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Request
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Scheduler
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Segment
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Session
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Settings
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Tracker
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Translation
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Twig
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UpdateCheck
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Updater
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Updates
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Validators
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View
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ViewDataTable
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Visualization
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Widget
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.htaccess
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Access.php
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Archive.php
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ArchiveProcessor.php
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AssetManager.php
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Auth.php
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AuthResult.php
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BaseFactory.php
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CliMulti.php
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Common.php
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Config.php
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Console.php
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Context.php
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Cookie.php
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CronArchive.php
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DI.php
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DataArray.php
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DataTable.php
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Date.php
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Db.php
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DbHelper.php
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Development.php
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ErrorHandler.php
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EventDispatcher.php
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ExceptionHandler.php
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FileIntegrity.php
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Filechecks.php
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Filesystem.php
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FrontController.php
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Http.php
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IP.php
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Log.php
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LogDeleter.php
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Mail.php
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Metrics.php
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NoAccessException.php
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Nonce.php
6 months ago
Notification.php
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NumberFormatter.php
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Option.php
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Period.php
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Piwik.php
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Plugin.php
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Process.php
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Profiler.php
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ProxyHeaders.php
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ProxyHttp.php
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QuickForm2.php
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RankingQuery.php
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ReportRenderer.php
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Request.php
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Segment.php
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Sequence.php
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Session.php
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SettingsPiwik.php
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SettingsServer.php
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Singleton.php
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Site.php
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SiteContentDetector.php
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SupportedBrowser.php
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TCPDF.php
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Theme.php
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Timer.php
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Tracker.php
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Twig.php
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Unzip.php
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UpdateCheck.php
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Updater.php
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UpdaterErrorException.php
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Updates.php
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Url.php
3 months ago
UrlHelper.php
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Version.php
3 months ago
View.php
3 months ago
bootstrap.php
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dispatch.php
2 years ago
testMinimumPhpVersion.php
6 months ago
Singleton.php
67 lines
| 1 | <?php |
| 2 | |
| 3 | /** |
| 4 | * Matomo - free/libre analytics platform |
| 5 | * |
| 6 | * @link https://matomo.org |
| 7 | * @license https://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later |
| 8 | */ |
| 9 | namespace Piwik; |
| 10 | |
| 11 | /** |
| 12 | * The singleton base class restricts the instantiation of derived classes to one object only. |
| 13 | * |
| 14 | * All plugin APIs are singletons and thus extend this class. |
| 15 | * |
| 16 | * @api |
| 17 | */ |
| 18 | class Singleton |
| 19 | { |
| 20 | protected static $instances; |
| 21 | protected function __construct() |
| 22 | { |
| 23 | } |
| 24 | protected final function __clone() |
| 25 | { |
| 26 | } |
| 27 | /** |
| 28 | * Returns the singleton instance for the derived class. If the singleton instance |
| 29 | * has not been created, this method will create it. |
| 30 | * |
| 31 | * @return static |
| 32 | */ |
| 33 | public static function getInstance() |
| 34 | { |
| 35 | $class = get_called_class(); |
| 36 | if (!isset(self::$instances[$class])) { |
| 37 | self::$instances[$class] = new $class(); |
| 38 | } |
| 39 | return self::$instances[$class]; |
| 40 | } |
| 41 | /** |
| 42 | * Used in tests only |
| 43 | * @ignore |
| 44 | */ |
| 45 | public static function unsetInstance() |
| 46 | { |
| 47 | $class = get_called_class(); |
| 48 | unset(self::$instances[$class]); |
| 49 | } |
| 50 | /** |
| 51 | * Sets the singleton instance. For testing purposes. |
| 52 | * @ignore |
| 53 | */ |
| 54 | public static function setSingletonInstance($instance) |
| 55 | { |
| 56 | $class = get_called_class(); |
| 57 | self::$instances[$class] = $instance; |
| 58 | } |
| 59 | /** |
| 60 | * @ignore |
| 61 | */ |
| 62 | public static function clearAll() |
| 63 | { |
| 64 | self::$instances = array(); |
| 65 | } |
| 66 | } |
| 67 |