| :mod:`airflow.models.xcom` |
| ========================== |
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| .. py:module:: airflow.models.xcom |
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| Module Contents |
| --------------- |
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| .. data:: MAX_XCOM_SIZE |
| :annotation: = 49344 |
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| .. data:: XCOM_RETURN_KEY |
| :annotation: = return_value |
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| .. py:class:: XCom |
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| Bases: :class:`airflow.models.base.Base`, :class:`airflow.utils.log.logging_mixin.LoggingMixin` |
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| Base class for XCom objects. |
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| .. attribute:: __tablename__ |
| :annotation: = xcom |
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| .. attribute:: id |
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| .. attribute:: key |
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| .. attribute:: value |
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| .. attribute:: timestamp |
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| .. attribute:: execution_date |
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| .. attribute:: task_id |
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| .. attribute:: dag_id |
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| .. attribute:: __table_args__ |
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| TODO: "pickling" has been deprecated and JSON is preferred. |
| "pickling" will be removed in Airflow 2.0. |
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| .. method:: init_on_load(self) |
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| .. method:: __repr__(self) |
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| .. classmethod:: set(cls, key, value, execution_date, task_id, dag_id, session=None) |
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| Store an XCom value. |
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| :return: None |
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| .. classmethod:: get_one(cls, execution_date, key=None, task_id=None, dag_id=None, include_prior_dates=False, session=None) |
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| Retrieve an XCom value, optionally meeting certain criteria. |
| TODO: "pickling" has been deprecated and JSON is preferred. |
| "pickling" will be removed in Airflow 2.0. |
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| :return: XCom value |
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| .. classmethod:: get_many(cls, execution_date, key=None, task_ids=None, dag_ids=None, include_prior_dates=False, limit=100, session=None) |
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| Retrieve an XCom value, optionally meeting certain criteria |
| TODO: "pickling" has been deprecated and JSON is preferred. |
| "pickling" will be removed in Airflow 2.0. |
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| .. classmethod:: delete(cls, xcoms, session=None) |
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| .. staticmethod:: serialize_value(value) |
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