protected function FileStorageSchema::getSharedTableFieldSchema in Drupal 8
Same name and namespace in other branches
- 9 core/modules/file/src/FileStorageSchema.php \Drupal\file\FileStorageSchema::getSharedTableFieldSchema()
Gets the schema for a single field definition.
Entity types may override this method in order to optimize the generated schema for given field. While all optimizations that apply to a single field have to be added here, all cross-field optimizations should be via SqlContentEntityStorageSchema::getEntitySchema() instead; e.g., an index spanning multiple fields.
Parameters
\Drupal\Core\Field\FieldStorageDefinitionInterface $storage_definition: The storage definition of the field whose schema has to be returned.
string $table_name: The name of the table columns will be added to.
string[] $column_mapping: A mapping of field column names to database column names.
Return value
array The schema definition for the table with the following keys:
- fields: The schema definition for the each field columns.
- indexes: The schema definition for the indexes.
- unique keys: The schema definition for the unique keys.
- foreign keys: The schema definition for the foreign keys.
Throws
\Drupal\Core\Field\FieldException Exception thrown if the schema contains reserved column names or if the initial values definition is invalid.
Overrides SqlContentEntityStorageSchema::getSharedTableFieldSchema
File
- core/
modules/ file/ src/ FileStorageSchema.php, line 16
Class
- FileStorageSchema
- Defines the file schema handler.
Namespace
Drupal\fileCode
protected function getSharedTableFieldSchema(FieldStorageDefinitionInterface $storage_definition, $table_name, array $column_mapping) {
$schema = parent::getSharedTableFieldSchema($storage_definition, $table_name, $column_mapping);
$field_name = $storage_definition
->getName();
if ($table_name == $this->storage
->getBaseTable()) {
switch ($field_name) {
case 'status':
case 'changed':
case 'uri':
$this
->addSharedTableFieldIndex($storage_definition, $schema, TRUE);
break;
}
}
// Entity keys automatically have not null assigned to TRUE, but for the
// file entity, NULL is a valid value for uid.
if ($field_name === 'uid') {
$schema['fields']['uid']['not null'] = FALSE;
}
return $schema;
}