gravitino.namespace.Namespace

class gravitino.namespace.Namespace(levels: List[str])

Bases: object

A namespace is a sequence of levels separated by dots. It’s used to identify a metalake, a catalog or a schema. For example, “metalake1”, “metalake1.catalog1” and “metalake1.catalog1.schema1” are all valid namespaces.

__init__(levels: List[str])

Methods

__init__(levels)
check(expression, message, *args)	Check the given condition is true.
empty()	Get an empty namespace.
from_json(levels)
is_empty()	Check if the namespace is empty.
length()	Get the length of the namespace.
level(pos)	Get the level at the given position.
levels()	Get the levels of the namespace.
of(*levels)	Create a namespace with the given levels.
to_json()

static check(expression: bool, message: str, *args) → None

Check the given condition is true. Throw an IllegalNamespaceException if it’s not.

Args:

expression: The expression to check. message: The message to throw. args: The arguments to the message.

static empty() → Namespace

Get an empty namespace.

Returns:

An empty namespace

is_empty() → bool

Check if the namespace is empty.

Returns:

True if the namespace is empty, false otherwise.

length() → int

Get the length of the namespace.

Returns:

The length of the namespace.

level(pos: int) → str

Get the level at the given position.

Args:

pos: The position of the level

Returns:

The level at the given position

levels() → List[str]

Get the levels of the namespace.

Returns:

The levels of the namespace

static of(*levels: str) → Namespace

Create a namespace with the given levels.

Args:

levels The levels of the namespace

Returns:

A namespace with the given levels