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45 lines
1.4 KiB
Python
45 lines
1.4 KiB
Python
# SPDX-License-Identifier: GPL-2.0-only
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#
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# This file is part of Nominatim. (https://nominatim.org)
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#
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# Copyright (C) 2022 by the Nominatim developer community.
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# For a full list of authors see the git log.
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"""
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Query and access functions for the in-database property table.
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"""
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from typing import Optional, cast
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from nominatim.db.connection import Connection
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def set_property(conn: Connection, name: str, value: str) -> None:
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""" Add or replace the property with the given name.
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"""
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with conn.cursor() as cur:
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cur.execute('SELECT value FROM nominatim_properties WHERE property = %s',
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(name, ))
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if cur.rowcount == 0:
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sql = 'INSERT INTO nominatim_properties (value, property) VALUES (%s, %s)'
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else:
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sql = 'UPDATE nominatim_properties SET value = %s WHERE property = %s'
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cur.execute(sql, (value, name))
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conn.commit()
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def get_property(conn: Connection, name: str) -> Optional[str]:
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""" Return the current value of the given property or None if the property
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is not set.
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"""
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if not conn.table_exists('nominatim_properties'):
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return None
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with conn.cursor() as cur:
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cur.execute('SELECT value FROM nominatim_properties WHERE property = %s',
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(name, ))
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if cur.rowcount == 0:
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return None
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return cast(Optional[str], cur.fetchone()[0]) # type: ignore[no-untyped-call]
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