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Title Object type File name Summary
ConditionInterface::notExists function core/lib/Drupal/Core/Database/Query/ConditionInterface.php Sets a condition that the specified subquery returns no values.
ConfigSingleImportForm::$configExists property core/modules/config/src/Form/ConfigSingleImportForm.php If the config exists, this is that object. Otherwise, FALSE.
ConfigTestForm::exists function core/modules/config/tests/config_test/src/ConfigTestForm.php Determines if the entity already exists.
DatabaseBackend::ensureBinExists function core/lib/Drupal/Core/Cache/DatabaseBackend.php Check if the cache bin exists and create it if not.
DatabaseBackend::ensureTableExists function core/lib/Drupal/Core/Flood/DatabaseBackend.php Check if the flood table exists and create it if not.
DatabaseCacheTagsChecksum::ensureTableExists function core/lib/Drupal/Core/Cache/DatabaseCacheTagsChecksum.php Check if the cache tags table exists and create it if not.
DatabaseLegacyTest::testDbFieldExists function core/tests/Drupal/KernelTests/Core/Database/DatabaseLegacyTest.php Tests deprecation of the db_field_exists() function.
DatabaseLegacyTest::testDbIndexExists function core/tests/Drupal/KernelTests/Core/Database/DatabaseLegacyTest.php Tests deprecation of the db_index_exists() function.
DatabaseLegacyTest::testDbTableExists function core/tests/Drupal/KernelTests/Core/Database/DatabaseLegacyTest.php Tests the db_table_exists() function.
DatabaseLockBackend::ensureTableExists function core/lib/Drupal/Core/Lock/DatabaseLockBackend.php Check if the semaphore table exists and create it if not.
DatabaseQueue::ensureTableExists function core/lib/Drupal/Core/Queue/DatabaseQueue.php Check if the table exists and create it if not.
DatabaseStorage::ensureTableExists function core/lib/Drupal/Core/Config/DatabaseStorage.php Check if the config table exists and create it if not.
DatabaseStorage::exists function core/lib/Drupal/Core/Config/DatabaseStorage.php Returns whether a configuration object exists.
DatabaseStorage::setIfNotExists function core/lib/Drupal/Core/KeyValueStore/DatabaseStorage.php Saves a value for a given key if it does not exist yet.
DatabaseStorageExpirable::setWithExpireIfNotExists function core/lib/Drupal/Core/KeyValueStore/DatabaseStorageExpirable.php Sets a value for a given key with a time to live if it does not yet exist.
DataDefinition::offsetExists function core/lib/Drupal/Core/TypedData/DataDefinition.php This is for BC support only.
@todo: Remove in https://www.drupal.org/node/1928868.
DateFormatFormBase::exists function core/modules/system/src/Form/DateFormatFormBase.php Checks for an existing date format.
db_field_exists function core/includes/database.inc Checks if a column exists in the given table.
db_index_exists function core/includes/database.inc Checks if an index exists in the given table.
db_table_exists function core/includes/database.inc Checks if a table exists.
DefaultPluginManager::providerExists function core/lib/Drupal/Core/Plugin/DefaultPluginManager.php Determines if the provider of a definition exists.
DefaultPluginManagerTest::testProviderExists function core/tests/Drupal/Tests/Core/Plugin/DefaultPluginManagerTest.php @covers ::findDefinitions[[api-linebreak]]
@covers ::extractProviderFromDefinition[[api-linebreak]]
Dependency::offsetExists function core/lib/Drupal/Core/Extension/Dependency.php
DeprecatedArray::offsetExists function core/lib/Drupal/Component/Utility/DeprecatedArray.php
DocParser::$classExists property core/lib/Drupal/Component/Annotation/Doctrine/DocParser.php This hashmap is used internally to cache results of class_exists()
look-ups.
DocParser::classExists function core/lib/Drupal/Component/Annotation/Doctrine/DocParser.php Attempts to check if a class exists or not. This never goes through the PHP autoloading mechanism
but uses the {@link AnnotationRegistry} to load classes.
Drupal6SqlBaseTest::testDrupal6ModuleExists function core/modules/migrate_drupal/tests/src/Unit/source/d6/Drupal6SqlBaseTest.php Tests for Drupal6SqlBase::moduleExists().
DrupalSqlBase::moduleExists function core/modules/migrate_drupal/src/Plugin/migrate/source/DrupalSqlBase.php Checks if a given module is enabled in the source Drupal database.
DrupalStandardsListenerTrait::classExists function core/tests/Drupal/Tests/Listeners/DrupalStandardsListenerTrait.php Helper method to check if a string names a valid class or trait.
EntityDisplayModeFormBase::exists function core/modules/field_ui/src/Form/EntityDisplayModeFormBase.php Determines if the display mode already exists.
EntityExists class core/modules/migrate/src/Plugin/migrate/process/EntityExists.php This plugin checks if a given entity exists.
EntityExists.php file core/modules/migrate/src/Plugin/migrate/process/EntityExists.php
EntityExists::$storage property core/modules/migrate/src/Plugin/migrate/process/EntityExists.php The entity storage.
EntityExists::create function core/modules/migrate/src/Plugin/migrate/process/EntityExists.php Creates an instance of the plugin.
EntityExists::transform function core/modules/migrate/src/Plugin/migrate/process/EntityExists.php Performs the associated process.
EntityExists::__construct function core/modules/migrate/src/Plugin/migrate/process/EntityExists.php EntityExists constructor.
EntityExistsTest class core/modules/migrate/tests/src/Kernel/Plugin/EntityExistsTest.php Tests the EntityExists process plugin.
EntityExistsTest.php file core/modules/migrate/tests/src/Kernel/Plugin/EntityExistsTest.php
EntityExistsTest::$modules property core/modules/migrate/tests/src/Kernel/Plugin/EntityExistsTest.php Modules to enable.
EntityExistsTest::setUp function core/modules/migrate/tests/src/Kernel/Plugin/EntityExistsTest.php
EntityExistsTest::testEntityExists function core/modules/migrate/tests/src/Kernel/Plugin/EntityExistsTest.php Test the EntityExists plugin.
EntityResource::entityExists function core/modules/jsonapi/src/Controller/EntityResource.php Checks if the given entity exists.
ExtensionList::exists function core/lib/Drupal/Core/Extension/ExtensionList.php Determines if an extension exists in the filesystem.
FieldStorageAddForm::fieldNameExists function core/modules/field_ui/src/Form/FieldStorageAddForm.php Checks if a field machine name is taken.
FileExistsException class core/lib/Drupal/Core/File/Exception/FileExistsException.php Exception thrown when a file unexpectedly exists.
FileExistsException.php file core/lib/Drupal/Core/File/Exception/FileExistsException.php
FileFieldTestBase::assertFileEntryExists function core/modules/file/src/Tests/FileFieldTestBase.php Asserts that a file exists in the database.
FileFieldTestBase::assertFileEntryExists function core/modules/file/tests/src/Functional/FileFieldTestBase.php Asserts that a file exists in the database.
FileFieldTestBase::assertFileEntryNotExists function core/modules/file/src/Tests/FileFieldTestBase.php Asserts that a file does not exist in the database.
FileFieldTestBase::assertFileEntryNotExists function core/modules/file/tests/src/Functional/FileFieldTestBase.php Asserts that a file does not exist in the database.

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