/**
* Returns the array describing the database schema.
*
* If the $table parameter is passed, the method will return the schema for the given table,
* otherwise - for the whole database.
*
* @static
*
* @throws APIException if the given table does not exist
*
* @param string $table
*
* @return array
*/
public static function getSchema($table = null)
{
if (is_null(self::$schema)) {
self::$schema = (include Z::getRootDir() . '/' . self::SCHEMA_FILE);
}
if (is_null($table)) {
return self::$schema;
} elseif (isset(self::$schema[$table])) {
return self::$schema[$table];
} else {
self::exception(self::SCHEMA_ERROR, _s('Table "%1$s" does not exist.', $table));
}
}
