Classes, traits, and interfaces - 11.x - drupal

Introduction to classes

A lot of the PHP code in Drupal is object oriented (OO), making use of PHP classes, interfaces, and traits. See the Objected-oriented programming conventions for more information.

See also

Objected-oriented programming conventions

File

core/core.api.php, line 1519

Name	Deprecated	Object type	Namespace	File name	Summary	Direct uses	Use statements	Strings
CacheCollectorInterface		interface	Drupal\Core\Cache	core/lib/Drupal/Core/Cache/CacheCollectorInterface.php	Provides a caching wrapper to be used in place of large structures.	3	2
CacheCollectorTest		class	Drupal\Tests\Core\Cache	core/tests/Drupal/Tests/Core/Cache/CacheCollectorTest.php	@coversDefaultClass \Drupal\Core\Cache\CacheCollector @group Cache
CacheCollectorTest		class	Drupal\KernelTests\Core\Cache	core/tests/Drupal/KernelTests/Core/Cache/CacheCollectorTest.php	Tests DatabaseBackend cache tag implementation.
CacheContextInterface		interface	Drupal\Core\Cache\Context	core/lib/Drupal/Core/Cache/Context/CacheContextInterface.php	Provides an interface for defining a cache context service.	22	7
CacheContextOptimizationTest		class	Drupal\KernelTests\Core\Cache	core/tests/Drupal/KernelTests/Core/Cache/CacheContextOptimizationTest.php	Tests the cache context optimization.
CacheContextsManager		class	Drupal\Core\Cache\Context	core/lib/Drupal/Core/Cache/Context/CacheContextsManager.php	Converts cache context tokens into cache keys.		39
CacheContextsManagerTest		class	Drupal\Tests\Core\Cache\Context	core/tests/Drupal/Tests/Core/Cache/Context/CacheContextsManagerTest.php	@coversDefaultClass \Drupal\Core\Cache\Context\CacheContextsManager @group Cache
CacheContextsPass		class	Drupal\Core\Cache\Context	core/lib/Drupal/Core/Cache/Context/CacheContextsPass.php	Adds cache_contexts parameter to the container.		1
CachedDataUITest		class	Drupal\Tests\views_ui\Functional	core/modules/views_ui/tests/src/Functional/CachedDataUITest.php	Tests the shared tempstore cache in the UI.
CachedDiscoveryClearer		class	Drupal\Core\ProxyClass\Plugin	core/lib/Drupal/Core/ProxyClass/Plugin/CachedDiscoveryClearer.php	Provides a proxy class for \Drupal\Core\Plugin\CachedDiscoveryClearer.
CachedDiscoveryClearer		class	Drupal\Core\Plugin	core/lib/Drupal/Core/Plugin/CachedDiscoveryClearer.php	Defines a class which is capable of clearing the cache on plugin managers.
CachedDiscoveryClearerInterface		interface	Drupal\Core\Plugin	core/lib/Drupal/Core/Plugin/CachedDiscoveryClearerInterface.php	Provides a way to clear static caches of all plugin managers.	2
CachedDiscoveryInterface		interface	Drupal\Component\Plugin\Discovery	core/lib/Drupal/Component/Plugin/Discovery/CachedDiscoveryInterface.php	Interface for discovery components holding a cache of plugin definitions.	4	6
CacheDecoratorInterface	in drupal:10.2.0 and is removed from drupal:11.0.0. There is no replacement.	interface	Drupal\Core\CacheDecorator	core/lib/Drupal/Core/CacheDecorator/CacheDecoratorInterface.php	Defines an interface for cache decorator implementations.
CachedStorage		class	Drupal\Core\Config	core/lib/Drupal/Core/Config/CachedStorage.php	Defines the cached storage.		2
CachedStorageTest		class	Drupal\Tests\Core\Config	core/tests/Drupal/Tests/Core/Config/CachedStorageTest.php	Tests the interaction of cache and file storage in CachedStorage.
CachedStorageTest		class	Drupal\KernelTests\Core\Config\Storage	core/tests/Drupal/KernelTests/Core/Config/Storage/CachedStorageTest.php	Tests CachedStorage operations.
CachedStrategy		class	Drupal\Core\Render\Placeholder	core/lib/Drupal/Core/Render/Placeholder/CachedStrategy.php	Looks up placeholders in the render cache and returns those we could find.
CacheFactory		class	Drupal\Core\Cache	core/lib/Drupal/Core/Cache/CacheFactory.php			2
CacheFactoryDecorator		class	Drupal\performance_test\Cache	core/modules/system/tests/modules/performance_test/src/Cache/CacheFactoryDecorator.php	Decorates a cache factory to register all calls to the cache system.			2
CacheFactoryInterface		interface	Drupal\Core\Cache	core/lib/Drupal/Core/Cache/CacheFactoryInterface.php	An interface defining cache factory classes.	11	4
CacheFactoryTest		class	Drupal\Tests\Core\Cache	core/tests/Drupal/Tests/Core/Cache/CacheFactoryTest.php	@coversDefaultClass \Drupal\Core\Cache\CacheFactory @group Cache
CacheItem		class	Drupal\Tests\Core\Session	core/tests/Drupal/Tests/Core/Session/AccessPolicyProcessorTest.php	Provides a simple cache.
CacheOptionalInterface		interface	Drupal\Core\Cache	core/lib/Drupal/Core/Cache/CacheOptionalInterface.php	Indicates that caching is optional.	2	3
CachePluginBase		abstract class	Drupal\views\Plugin\views\cache	core/modules/views/src/Plugin/views/cache/CachePluginBase.php	The base plugin to handle caching.	3	10
CacheRedirect		class	Drupal\Core\Cache	core/lib/Drupal/Core/Cache/CacheRedirect.php	Defines a value object to represent a cache redirect.		3
CacheRouterRebuildSubscriber		class	Drupal\Core\EventSubscriber	core/lib/Drupal/Core/EventSubscriber/CacheRouterRebuildSubscriber.php	Clear cache tags when the router is rebuilt.
CacheTagPreloadSubscriber		class	Drupal\Core\Cache\EventSubscriber	core/lib/Drupal/Core/Cache/EventSubscriber/CacheTagPreloadSubscriber.php	Preloads frequently used cache tags.
CacheTagsChecksumDecorator		class	Drupal\performance_test\Cache	core/modules/system/tests/modules/performance_test/src/Cache/CacheTagsChecksumDecorator.php	Wraps an existing cache tags checksum invalidator to track calls separately.			2
CacheTagsChecksumInterface		interface	Drupal\Core\Cache	core/lib/Drupal/Core/Cache/CacheTagsChecksumInterface.php	Provides checksums for cache tag invalidations.	2	3
CacheTagsChecksumPreloadInterface		interface	Drupal\Core\Cache	core/lib/Drupal/Core/Cache/CacheTagsChecksumPreloadInterface.php	Registers cache tags for preloading.	2	2
CacheTagsChecksumTrait		trait	Drupal\Core\Cache	core/lib/Drupal/Core/Cache/CacheTagsChecksumTrait.php	A trait for cache tag checksum implementations.
CacheTagsInvalidator		class	Drupal\Core\Cache	core/lib/Drupal/Core/Cache/CacheTagsInvalidator.php	Passes cache tag events to classes that wish to respond to them.		1
CacheTagsInvalidatorInterface		interface	Drupal\Core\Cache	core/lib/Drupal/Core/Cache/CacheTagsInvalidatorInterface.php	Defines required methods for classes wanting to handle cache tag changes.	10	20
CacheTagsInvalidatorTest		class	Drupal\Tests\Core\Cache	core/tests/Drupal/Tests/Core/Cache/CacheTagsInvalidatorTest.php	@coversDefaultClass \Drupal\Core\Cache\CacheTagsInvalidator @group Cache
CacheTagTest		class	Drupal\Tests\views\Functional\Plugin	core/modules/views/tests/src/Functional/Plugin/CacheTagTest.php	Tests tag cache plugin.
CacheTest		class	Drupal\Tests\views\Kernel\Plugin	core/modules/views/tests/src/Kernel/Plugin/CacheTest.php	Tests pluggable caching for views.
CacheTest		class	Drupal\Tests\Core\Cache	core/tests/Drupal/Tests/Core/Cache/CacheTest.php	@coversDefaultClass \Drupal\Core\Cache\Cache @group Cache
CacheTestBase		abstract class	Drupal\Tests\system\Functional\Cache	core/modules/system/tests/src/Functional/Cache/CacheTestBase.php	Provides helper methods for cache tests.	1
CacheTestController		class	Drupal\cache_test\Controller	core/modules/system/tests/modules/cache_test/src/Controller/CacheTestController.php	Controller routines for cache_test routes.
CacheWebTest		class	Drupal\Tests\views\Functional\Plugin	core/modules/views/tests/src/Functional/Plugin/CacheWebTest.php	Tests pluggable caching for views via a web test.
CalculatedCacheContextInterface		interface	Drupal\Core\Cache\Context	core/lib/Drupal/Core/Cache/Context/CalculatedCacheContextInterface.php	Provides an interface for defining a calculated cache context service.	10	3
CalculatedPermissions		class	Drupal\Core\Session	core/lib/Drupal/Core/Session/CalculatedPermissions.php	Represents a calculated set of permissions with cacheable metadata.		4
CalculatedPermissionsInterface		interface	Drupal\Core\Session	core/lib/Drupal/Core/Session/CalculatedPermissionsInterface.php	Defines the calculated permissions interface.	2	1
CalculatedPermissionsItem		class	Drupal\Core\Session	core/lib/Drupal/Core/Session/CalculatedPermissionsItem.php	Represents a single entry for the calculated permissions.		9
CalculatedPermissionsItemInterface		interface	Drupal\Core\Session	core/lib/Drupal/Core/Session/CalculatedPermissionsItemInterface.php	Defines the calculated permissions item interface.	1
CalculatedPermissionsItemTest		class	Drupal\Tests\Core\Session	core/tests/Drupal/Tests/Core/Session/CalculatedPermissionsItemTest.php	Tests the CalculatedPermissionsItem value object.
CalculatedPermissionsTest		class	Drupal\Tests\Core\Session	core/tests/Drupal/Tests/Core/Session/CalculatedPermissionsTest.php	Tests the CalculatedPermissions value object.
CalculatedPermissionsTrait		trait	Drupal\Core\Session	core/lib/Drupal/Core/Session/CalculatedPermissionsTrait.php	Trait for \Drupal\Core\Session\CalculatedPermissionsInterface.
CallableClass		class	Drupal\Tests\Component\EventDispatcher	core/tests/Drupal/Tests/Component/EventDispatcher/ContainerAwareEventDispatcherTest.php

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