Method __init__

sdk/python/feast/labeling/label_view.py:83–195

Creates a LabelView object. Args: name: The unique name of this label view. source: The data source for ingesting labels, typically a ``PushSource``. If ``None``, labels can only be written programmatically via ``FeatureStore.push()``.

(
        self,
        *,
        name: str,
        source: Optional[DataSource] = None,
        schema: Optional[List[Field]] = None,
        entities: Optional[List[Entity]] = None,
        ttl: Optional[timedelta] = timedelta(days=0),
        online: bool = True,
        description: str = "",
        tags: Optional[Dict[str, str]] = None,
        owner: str = "",
        labeler_field: str = "labeler",
        conflict_policy: ConflictPolicy = ConflictPolicy.LAST_WRITE_WINS,
        reference_feature_view: Optional[str] = None,
    )

    reference_feature_view: Optional[str]

    def __init__(
        self,
        *,
        name: str,
        source: Optional[DataSource] = None,
        schema: Optional[List[Field]] = None,
        entities: Optional[List[Entity]] = None,
        ttl: Optional[timedelta] = timedelta(days=0),
        online: bool = True,
        description: str = "",
        tags: Optional[Dict[str, str]] = None,
        owner: str = "",
        labeler_field: str = "labeler",
        conflict_policy: ConflictPolicy = ConflictPolicy.LAST_WRITE_WINS,
        reference_feature_view: Optional[str] = None,
    ):
        """Creates a LabelView object.

        Args:
            name: The unique name of this label view.
            source: The data source for ingesting labels, typically a
                ``PushSource``. If ``None``, labels can only be written
                programmatically via ``FeatureStore.push()``.
            schema: The list of ``Field`` objects describing both entity
                columns and label columns. Entity columns are identified
                by matching against entity join keys.
            entities: The list of ``Entity`` objects whose join keys are
                used to key the labels.
            ttl: The time-to-live for labels in the online store.
                ``timedelta(0)`` means labels never expire. ``None`` means
                the label view inherits the default TTL.
            online: Whether this label view should be materialized to the
                online store for low-latency serving.
            description: A human-readable description of what the labels
                represent.
            tags: A dictionary of key-value pairs for arbitrary metadata.
            owner: The owner of this label view, typically an email address.
            labeler_field: The name of the field in the schema that
                identifies the labeler. Defaults to ``"labeler"``.
            conflict_policy: The policy for resolving conflicting labels
                from different labelers. Defaults to
                ``ConflictPolicy.LAST_WRITE_WINS``. Enforced for offline
                store reads (training, UI). Online store uses LAST_WRITE_WINS.
            reference_feature_view: The name of the ``FeatureView`` whose
                entities this label view annotates. This is informational
                and does not create a hard dependency.
        """
        self.ttl = ttl
        self.entities = []
        self.source = source

        schema = schema or []

        features: List[Field] = []
        self.entity_columns = []

        join_keys: List[str] = []
        if entities: