Source code for airflow.providers.teradata.operators.teradata
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from __future__ import annotations
from typing import TYPE_CHECKING, ClassVar, Sequence
from airflow.models import BaseOperator
from airflow.providers.common.sql.operators.sql import SQLExecuteQueryOperator
from airflow.providers.teradata.hooks.teradata import TeradataHook
if TYPE_CHECKING:
from airflow.utils.context import Context
[docs]class TeradataOperator(SQLExecuteQueryOperator):
"""
General Teradata Operator to execute queries on Teradata Database.
Executes sql statements in the Teradata SQL Database using Teradata Python SQL Driver
.. seealso::
For more information on how to use this operator, take a look at the guide:
:ref:`howto/operator:TeradataOperator`
:param sql: the SQL query to be executed as a single string, or a list of str (sql statements)
:param teradata_conn_id: reference to a predefined database
:param autocommit: if True, each command is automatically committed.(default value: False)
:param parameters: (optional) the parameters to render the SQL query with.
:param schema: The Teradata database to connect to.
"""
[docs] template_fields: Sequence[str] = (
"sql",
"parameters",
)
[docs] template_ext: Sequence[str] = (".sql",)
[docs] template_fields_renderers: ClassVar[dict] = {"sql": "sql"}
def __init__(
self,
teradata_conn_id: str = TeradataHook.default_conn_name,
schema: str | None = None,
**kwargs,
) -> None:
if schema:
hook_params = kwargs.pop("hook_params", {})
kwargs["hook_params"] = {
"database": schema,
**hook_params,
}
super().__init__(**kwargs)
self.conn_id = teradata_conn_id
[docs]class TeradataStoredProcedureOperator(BaseOperator):
"""
Executes stored procedure in a specific Teradata database.
:param procedure: name of stored procedure to call (templated)
:param teradata_conn_id: The :ref:`Teradata connection id <howto/connection:teradata>`
reference to a specific Teradata database.
:param parameters: (optional, templated) the parameters provided in the call
"""
[docs] template_fields: Sequence[str] = (
"procedure",
"parameters",
)
def __init__(
self,
*,
procedure: str,
teradata_conn_id: str = TeradataHook.default_conn_name,
parameters: dict | list | None = None,
**kwargs,
) -> None:
super().__init__(**kwargs)
self.teradata_conn_id = teradata_conn_id
self.procedure = procedure
self.parameters = parameters
[docs] def execute(self, context: Context):
hook = TeradataHook(teradata_conn_id=self.teradata_conn_id)
return hook.callproc(self.procedure, autocommit=True, parameters=self.parameters)