Source code for system.neo4j.example_neo4j

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"""
Example use of Neo4j related operators.
"""

from __future__ import annotations

import os
from datetime import datetime

from airflow import DAG
from airflow.providers.neo4j.operators.neo4j import Neo4jOperator

ENV_ID = os.environ.get("SYSTEM_TESTS_ENV_ID")
DAG_ID = "example_neo4j"

with DAG(
    DAG_ID,
    start_date=datetime(2021, 1, 1),
    schedule=None,
    tags=["example"],
    catchup=False,
) as dag:
    # [START run_query_neo4j_operator]

    neo4j_task = Neo4jOperator(
        task_id="run_neo4j_query",
        neo4j_conn_id="neo4j_conn_id",
        cypher='MATCH (tom {name: "Tom Hanks", date: "{{ds}}"}) RETURN tom',
        dag=dag,
    )

    # [END run_query_neo4j_operator]

    # [START run_query_neo4j_operator_with_parameters]

    neo4j_task_with_parameters = Neo4jOperator(
        task_id="run_neo4j_query_with_parameters",
        neo4j_conn_id="neo4j_conn_id",
        parameters={"name": "Tom Hanks"},
        cypher='MATCH (actor {name: $name, date: "{{ds}}"}) RETURN actor',
        dag=dag,
    )

    # [END run_query_neo4j_operator_with_parameters]

    neo4j_task >> neo4j_task_with_parameters

from tests_common.test_utils.system_tests import get_test_run  # noqa: E402

# Needed to run the example DAG with pytest (see: contributing-docs/testing/system_tests.rst)
test_run = get_test_run(dag)