class EntityTestUpdate

class EntityTestUpdate extends ContentEntityBase {
  
  /**
   * {@inheritdoc}
   */
  public static function preCreate(EntityStorageInterface $storage, array &$values) {
    parent::preCreate($storage, $values);
    if (empty($values['type'])) {
      $values['type'] = $storage->getEntityTypeId();
    }
  }
  
  /**
   * {@inheritdoc}
   */
  public static function baseFieldDefinitions(EntityTypeInterface $entity_type) {
    // This entity type is used for generating database dumps from Drupal
    // 8.0.0-rc1, which didn't have the entity key base fields defined in
    // the parent class (ContentEntityBase), so we have to duplicate them here.
    $fields[$entity_type->getKey('id')] = BaseFieldDefinition::create('integer')->setLabel(new TranslatableMarkup('ID'))
      ->setDescription(new TranslatableMarkup('The ID of the test entity.'))
      ->setReadOnly(TRUE)
      ->setSetting('unsigned', TRUE);
    $fields[$entity_type->getKey('uuid')] = BaseFieldDefinition::create('uuid')->setLabel(new TranslatableMarkup('UUID'))
      ->setDescription(new TranslatableMarkup('The UUID of the test entity.'))
      ->setReadOnly(TRUE);
    $fields[$entity_type->getKey('bundle')] = BaseFieldDefinition::create('string')->setLabel(new TranslatableMarkup('Type'))
      ->setDescription(new TranslatableMarkup('The bundle of the test entity.'))
      ->setRequired(TRUE);
    if ($entity_type->hasKey('revision')) {
      $fields[$entity_type->getKey('revision')] = BaseFieldDefinition::create('integer')->setLabel(new TranslatableMarkup('Revision ID'))
        ->setReadOnly(TRUE)
        ->setSetting('unsigned', TRUE);
    }
    $fields[$entity_type->getKey('langcode')] = BaseFieldDefinition::create('language')->setLabel(new TranslatableMarkup('Language'));
    if ($entity_type->isRevisionable()) {
      $fields[$entity_type->getKey('langcode')]
        ->setRevisionable(TRUE);
    }
    if ($entity_type->isTranslatable()) {
      $fields[$entity_type->getKey('langcode')]
        ->setTranslatable(TRUE);
    }
    $fields['name'] = BaseFieldDefinition::create('string')->setLabel(new TranslatableMarkup('Name'))
      ->setDescription(new TranslatableMarkup('The name of the test entity.'))
      ->setTranslatable(TRUE)
      ->setRevisionable(TRUE)
      ->setSetting('max_length', 32)
      ->setDisplayOptions('view', [
      'label' => 'hidden',
      'type' => 'string',
      'weight' => -5,
    ])
      ->setDisplayOptions('form', [
      'type' => 'string_textfield',
      'weight' => -5,
    ]);
    $fields['test_single_property'] = BaseFieldDefinition::create('string')->setLabel(new TranslatableMarkup('Field with a single property'))
      ->setTranslatable(TRUE)
      ->setRevisionable(TRUE);
    $fields['test_multiple_properties'] = BaseFieldDefinition::create('multi_value_test')->setLabel(new TranslatableMarkup('Field with multiple properties'))
      ->setTranslatable(TRUE)
      ->setRevisionable(TRUE);
    $fields['test_single_property_multiple_values'] = BaseFieldDefinition::create('string')->setLabel(new TranslatableMarkup('Field with a single property and multiple values'))
      ->setCardinality(2)
      ->setTranslatable(TRUE)
      ->setRevisionable(TRUE);
    $fields['test_multiple_properties_multiple_values'] = BaseFieldDefinition::create('multi_value_test')->setLabel(new TranslatableMarkup('Field with multiple properties and multiple values'))
      ->setCardinality(2)
      ->setTranslatable(TRUE)
      ->setRevisionable(TRUE);
    $fields['test_non_rev_field'] = BaseFieldDefinition::create('string')->setLabel(new TranslatableMarkup('Non Revisionable Field'))
      ->setDescription(new TranslatableMarkup('A non-revisionable test field.'))
      ->setCardinality(1)
      ->setRevisionable(FALSE)
      ->setTranslatable(TRUE);
    $fields['test_non_mul_field'] = BaseFieldDefinition::create('string')->setLabel(new TranslatableMarkup('Non Translatable Field'))
      ->setDescription(new TranslatableMarkup('A non-translatable test field.'))
      ->setCardinality(1)
      ->setRevisionable(TRUE)
      ->setTranslatable(FALSE);
    $fields['test_non_mulrev_field'] = BaseFieldDefinition::create('string')->setLabel(new TranslatableMarkup('Non Revisionable and Translatable Field'))
      ->setDescription(new TranslatableMarkup('A non-revisionable and non-translatable test field.'))
      ->setCardinality(1)
      ->setRevisionable(FALSE)
      ->setTranslatable(FALSE);
    $fields += \Drupal::state()->get('entity_test_update.additional_base_field_definitions', []);
    return $fields;
  }
  
  /**
   * {@inheritdoc}
   */
  public static function bundleFieldDefinitions(EntityTypeInterface $entity_type, $bundle, array $base_field_definitions) {
    $fields = parent::bundleFieldDefinitions($entity_type, $bundle, $base_field_definitions);
    $fields += \Drupal::state()->get('entity_test_update.additional_bundle_field_definitions.' . $bundle, []);
    return $fields;
  }

}