Source code for airflow.providers.sqlite.hooks.sqlite
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import sqlite3
from airflow.hooks.dbapi import DbApiHook
[docs]class SqliteHook(DbApiHook):
"""Interact with SQLite."""
[docs] conn_name_attr = 'sqlite_conn_id'
[docs] default_conn_name = 'sqlite_default'
[docs] def get_conn(self) -> sqlite3.dbapi2.Connection:
"""Returns a sqlite connection object"""
conn_id = getattr(self, self.conn_name_attr)
airflow_conn = self.get_connection(conn_id)
conn = sqlite3.connect(airflow_conn.host)
return conn
@staticmethod
def _generate_insert_sql(table, values, target_fields, replace, **kwargs):
"""
Static helper method that generates the INSERT SQL statement.
The REPLACE variant is specific to MySQL syntax.
:param table: Name of the target table
:param values: The row to insert into the table
:param target_fields: The names of the columns to fill in the table
:param replace: Whether to replace instead of insert
:return: The generated INSERT or REPLACE SQL statement
:rtype: str
"""
placeholders = [
"?",
] * len(values)
if target_fields:
target_fields = ", ".join(target_fields)
target_fields = f"({target_fields})"
else:
target_fields = ''
if not replace:
sql = "INSERT INTO "
else:
sql = "REPLACE INTO "
sql += f"{table} {target_fields} VALUES ({','.join(placeholders)})"
return sql