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# This file is part of daf_butler. 

# 

# Developed for the LSST Data Management System. 

# This product includes software developed by the LSST Project 

# (http://www.lsst.org). 

# See the COPYRIGHT file at the top-level directory of this distribution 

# for details of code ownership. 

# 

# This program is free software: you can redistribute it and/or modify 

# it under the terms of the GNU General Public License as published by 

# the Free Software Foundation, either version 3 of the License, or 

# (at your option) any later version. 

# 

# This program is distributed in the hope that it will be useful, 

# but WITHOUT ANY WARRANTY; without even the implied warranty of 

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 

# GNU General Public License for more details. 

# 

# You should have received a copy of the GNU General Public License 

# along with this program. If not, see <http://www.gnu.org/licenses/>. 

 

from contextlib import closing 

 

from sqlalchemy.engine import Engine 

from sqlalchemy import event 

 

from sqlite3 import Connection as SQLite3Connection 

 

from lsst.daf.butler.core.config import Config 

from lsst.daf.butler.core.registry import RegistryConfig 

 

from .sqlRegistry import SqlRegistry 

 

__all__ = ("SqliteRegistry", ) 

 

 

@event.listens_for(Engine, "connect") 

def _enableForeignKeysOnSqlite3(dbapiConnection, connectionRecord): 

39 ↛ exitline 39 didn't return from function '_enableForeignKeysOnSqlite3', because the condition on line 39 was never false if isinstance(dbapiConnection, SQLite3Connection): 

with closing(dbapiConnection.cursor()) as cursor: 

cursor.execute("PRAGMA foreign_keys=ON;") 

 

 

class SqliteRegistry(SqlRegistry): 

"""Registry backed by a SQLite database. 

 

Parameters 

---------- 

config : `SqlRegistryConfig` or `str` 

Load configuration 

""" 

 

@classmethod 

def setConfigRoot(cls, root, config, full): 

"""Set any filesystem-dependent config options for this Registry to 

be appropriate for a new empty repository with the given root. 

 

Parameters 

---------- 

root : `str` 

Filesystem path to the root of the data repository. 

config : `Config` 

A Butler-level config object to update (but not a 

`ButlerConfig`, to avoid included expanded defaults). 

full : `ButlerConfig` 

A complete Butler config with all defaults expanded; 

repository-specific options that should not be obtained 

from defaults when Butler instances are constructed 

should be copied from `full` to `Config`. 

""" 

super().setConfigRoot(root, config, full) 

Config.overrideParameters(RegistryConfig, config, full, 

toUpdate={"db": "sqlite:///{}/gen3.sqlite3".format(root)}, 

toCopy=("cls", )) 

 

def __init__(self, registryConfig, schemaConfig, create=False): 

if ":memory:" in registryConfig.get("db", ""): 

create = True 

super().__init__(registryConfig, schemaConfig, create)