function BatchStorage::schemaDefinition

Defines the schema for the batch table.

@internal

File

core/lib/Drupal/Core/Batch/BatchStorage.php, line 206

Class

BatchStorage

Namespace

Code

public function schemaDefinition() {
    return [
        'description' => 'Stores details about batches (processes that run in multiple HTTP requests).',
        'fields' => [
            'bid' => [
                'description' => 'Primary Key: Unique batch ID.',
                // This is not a serial column, to allow both progressive and
                // non-progressive batches. See batch_process().
'type' => 'int',
                'unsigned' => TRUE,
                'not null' => TRUE,
            ],
            'token' => [
                'description' => "A string token generated against the current user's session id and the batch id, used to ensure that only the user who submitted the batch can effectively access it.",
                'type' => 'varchar_ascii',
                'length' => 64,
                'not null' => TRUE,
            ],
            'timestamp' => [
                'description' => 'A Unix timestamp indicating when this batch was submitted for processing. Stale batches are purged at cron time.',
                'type' => 'int',
                'not null' => TRUE,
            ],
            'batch' => [
                'description' => 'A serialized array containing the processing data for the batch.',
                'type' => 'blob',
                'not null' => FALSE,
                'size' => 'big',
            ],
        ],
        'primary key' => [
            'bid',
        ],
        'indexes' => [
            'token' => [
                'token',
            ],
        ],
    ];
}