--- /dev/null
+<?php
+
+namespace Drupal\field;
+
+use Drupal\Core\Config\Config;
+use Drupal\Core\Entity\EntityManagerInterface;
+use Drupal\Core\Entity\EntityTypeInterface;
+use Drupal\Core\Field\FieldConfigStorageBase;
+use Drupal\Core\Field\FieldTypePluginManagerInterface;
+use Drupal\Core\Language\LanguageManagerInterface;
+use Symfony\Component\DependencyInjection\ContainerInterface;
+use Drupal\Core\Config\ConfigFactoryInterface;
+use Drupal\Component\Uuid\UuidInterface;
+use Drupal\Core\State\StateInterface;
+
+/**
+ * Controller class for fields.
+ */
+class FieldConfigStorage extends FieldConfigStorageBase {
+
+ /**
+ * The entity manager.
+ *
+ * @var \Drupal\Core\Entity\EntityManagerInterface
+ */
+ protected $entityManager;
+
+ /**
+ * The state keyvalue collection.
+ *
+ * @var \Drupal\Core\State\StateInterface
+ */
+ protected $state;
+
+ /**
+ * The field type plugin manager.
+ *
+ * @var \Drupal\Core\Field\FieldTypePluginManagerInterface
+ */
+ protected $fieldTypeManager;
+
+ /**
+ * Constructs a FieldConfigStorage object.
+ *
+ * @param \Drupal\Core\Entity\EntityTypeInterface $entity_type
+ * The entity type definition.
+ * @param \Drupal\Core\Config\ConfigFactoryInterface $config_factory
+ * The config factory service.
+ * @param \Drupal\Component\Uuid\UuidInterface $uuid_service
+ * The UUID service.
+ * @param \Drupal\Core\Language\LanguageManagerInterface $language_manager
+ * The language manager.
+ * @param \Drupal\Core\Entity\EntityManagerInterface $entity_manager
+ * The entity manager.
+ * @param \Drupal\Core\State\StateInterface $state
+ * The state key value store.
+ * @param \Drupal\Core\Field\FieldTypePluginManagerInterface $field_type_manager
+ * The field type plugin manager.
+ */
+ public function __construct(EntityTypeInterface $entity_type, ConfigFactoryInterface $config_factory, UuidInterface $uuid_service, LanguageManagerInterface $language_manager, EntityManagerInterface $entity_manager, StateInterface $state, FieldTypePluginManagerInterface $field_type_manager) {
+ parent::__construct($entity_type, $config_factory, $uuid_service, $language_manager);
+ $this->entityManager = $entity_manager;
+ $this->state = $state;
+ $this->fieldTypeManager = $field_type_manager;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public static function createInstance(ContainerInterface $container, EntityTypeInterface $entity_type) {
+ return new static(
+ $entity_type,
+ $container->get('config.factory'),
+ $container->get('uuid'),
+ $container->get('language_manager'),
+ $container->get('entity.manager'),
+ $container->get('state'),
+ $container->get('plugin.manager.field.field_type')
+ );
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function importDelete($name, Config $new_config, Config $old_config) {
+ // If the field storage has been deleted in the same import, the field will
+ // be deleted by then, and there is nothing left to do. Just return TRUE so
+ // that the file does not get written to active store.
+ if (!$old_config->get()) {
+ return TRUE;
+ }
+ return parent::importDelete($name, $new_config, $old_config);
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function loadByProperties(array $conditions = []) {
+ // Include deleted fields if specified in the $conditions parameters.
+ $include_deleted = isset($conditions['include_deleted']) ? $conditions['include_deleted'] : FALSE;
+ unset($conditions['include_deleted']);
+
+ $fields = [];
+
+ // Get fields stored in configuration. If we are explicitly looking for
+ // deleted fields only, this can be skipped, because they will be
+ // retrieved from state below.
+ if (empty($conditions['deleted'])) {
+ if (isset($conditions['entity_type']) && isset($conditions['bundle']) && isset($conditions['field_name'])) {
+ // Optimize for the most frequent case where we do have a specific ID.
+ $id = $conditions['entity_type'] . '.' . $conditions['bundle'] . '.' . $conditions['field_name'];
+ $fields = $this->loadMultiple([$id]);
+ }
+ else {
+ // No specific ID, we need to examine all existing fields.
+ $fields = $this->loadMultiple();
+ }
+ }
+
+ // Merge deleted fields (stored in state) if needed.
+ if ($include_deleted || !empty($conditions['deleted'])) {
+ $deleted_fields = $this->state->get('field.field.deleted') ?: [];
+ $deleted_storages = $this->state->get('field.storage.deleted') ?: [];
+ foreach ($deleted_fields as $id => $config) {
+ // If the field storage itself is deleted, inject it directly in the field.
+ if (isset($deleted_storages[$config['field_storage_uuid']])) {
+ $config['field_storage'] = $this->entityManager->getStorage('field_storage_config')->create($deleted_storages[$config['field_storage_uuid']]);
+ }
+ $fields[$id] = $this->create($config);
+ }
+ }
+
+ // Collect matching fields.
+ $matching_fields = [];
+ foreach ($fields as $field) {
+ // Some conditions are checked against the field storage.
+ $field_storage = $field->getFieldStorageDefinition();
+
+ // Only keep the field if it matches all conditions.
+ foreach ($conditions as $key => $value) {
+ // Extract the actual value against which the condition is checked.
+ switch ($key) {
+ case 'field_name':
+ $checked_value = $field_storage->getName();
+ break;
+
+ case 'field_id':
+ case 'field_storage_uuid':
+ $checked_value = $field_storage->uuid();
+ break;
+
+ case 'uuid';
+ $checked_value = $field->uuid();
+ break;
+
+ case 'deleted';
+ $checked_value = $field->isDeleted();
+ break;
+
+ default:
+ $checked_value = $field->get($key);
+ break;
+ }
+
+ // Skip to the next field as soon as one condition does not match.
+ if ($checked_value != $value) {
+ continue 2;
+ }
+ }
+
+ // When returning deleted fields, key the results by UUID since they
+ // can include several fields with the same ID.
+ $key = $include_deleted ? $field->uuid() : $field->id();
+ $matching_fields[$key] = $field;
+ }
+
+ return $matching_fields;
+ }
+
+}