function DatabaseStorage::getAllCollectionNames

Gets the existing collections.

A configuration storage can contain multiple sets of configuration objects in partitioned collections. The collection key name identifies the current collection used.

Return value

array An array of existing collection names.

Overrides StorageInterface::getAllCollectionNames

File

core/lib/Drupal/Core/Config/DatabaseStorage.php, line 347

Class

DatabaseStorage

Defines the Database storage.

Namespace

Code

public function getAllCollectionNames() {
    try {
        return $this->connection
            ->query('SELECT DISTINCT [collection] FROM {' . $this->connection
            ->escapeTable($this->table) . '} WHERE [collection] <> :collection ORDER by [collection]', [
            ':collection' => StorageInterface::DEFAULT_COLLECTION,
        ])
            ->fetchCol();
    } catch (\Exception $e) {
        if ($this->connection
            ->schema()
            ->tableExists($this->table)) {
            throw $e;
        }
        // If we attempt a read without actually having the table available,
        // return an empty array so the caller can handle it.
        return [];
    }
}