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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, SqlRegistryConfig 

 

__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, dataUnitConfig, create=False): 

registryConfig = SqlRegistryConfig(registryConfig) 

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

create = True 

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