Coverage for python/lsst/daf/butler/registry/queries/_sql_query_backend.py: 64%

18 statements  

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1# This file is part of daf_butler. 

2# 

3# Developed for the LSST Data Management System. 

4# This product includes software developed by the LSST Project 

5# (http://www.lsst.org). 

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

7# for details of code ownership. 

8# 

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

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

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

12# (at your option) any later version. 

13# 

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

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

16# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 

17# GNU General Public License for more details. 

18# 

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

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

21from __future__ import annotations 

22 

23__all__ = ("SqlQueryBackend",) 

24 

25from typing import TYPE_CHECKING 

26 

27from ._query_backend import QueryBackend 

28 

29if TYPE_CHECKING: 29 ↛ 30line 29 didn't jump to line 30, because the condition on line 29 was never true

30 from ...core import DimensionUniverse 

31 from ..interfaces import Database 

32 from ..managers import RegistryManagerInstances 

33 

34 

35class SqlQueryBackend(QueryBackend): 

36 """An implementation of `QueryBackend` for `SqlRegistry`. 

37 

38 Parameters 

39 ---------- 

40 db : `Database` 

41 Object that abstracts the database engine. 

42 managers : `RegistryManagerInstances` 

43 Struct containing the manager objects that back a `SqlRegistry`. 

44 """ 

45 

46 def __init__( 

47 self, 

48 db: Database, 

49 managers: RegistryManagerInstances, 

50 ): 

51 self._db = db 

52 self._managers = managers 

53 

54 @property 

55 def managers(self) -> RegistryManagerInstances: 

56 # Docstring inherited. 

57 return self._managers 

58 

59 @property 

60 def universe(self) -> DimensionUniverse: 

61 # Docstring inherited. 

62 return self._managers.dimensions.universe