# Cloud Spanner API . projects . instances . databases . databaseRoles

## Instance Methods

Close httplib2 connections.

Lists Cloud Spanner database roles.

Retrieves the next page of results.

### Method Details

`close()`

    Close httplib2 connections.

`list(parent, pageSize=None, pageToken=None, x__xgafv=None)`

    Lists Cloud Spanner database roles.

    Args:
      parent: string, Required. The database whose roles should be listed. Values are of the form `projects//instances//databases//databaseRoles`. (required)
      pageSize: integer, Number of database roles to be returned in the response. If 0 or less, defaults to the server's maximum allowed page size.
      pageToken: string, If non-empty, `page_token` should contain a next_page_token from a previous ListDatabaseRolesResponse.
      x__xgafv: string, V1 error format.
        Allowed values
          1 - v1 error format
          2 - v2 error format

    Returns:
      An object of the form:

        { # The response for ListDatabaseRoles.
      "databaseRoles": [ # Database roles that matched the request.
        { # A Cloud Spanner database role.
          "name": "A String", # Required. The name of the database role. Values are of the form `projects//instances//databases//databaseRoles/ {role}`, where `` is as specified in the `CREATE ROLE` DDL statement. This name can be passed to Get/Set IAMPolicy methods to identify the database role.
        },
      ],
      "nextPageToken": "A String", # `next_page_token` can be sent in a subsequent ListDatabaseRoles call to fetch more of the matching roles.
    }

`list_next()`

    Retrieves the next page of results.

            Args:
              previous_request: The request for the previous page. (required)
              previous_response: The response from the request for the previous page. (required)

            Returns:
              A request object that you can call 'execute()' on to request the next
              page. Returns None if there are no more items in the collection.