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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 __future__ import annotations 

 

from typing import Optional 

 

from ...core.dimensions import DimensionElement, DimensionUniverse 

from ...core.utils import NamedKeyDict 

from ..interfaces import Database, StaticTablesContext, DimensionRecordStorageManager, DimensionRecordStorage 

 

 

class StaticDimensionRecordStorageManager(DimensionRecordStorageManager): 

"""An implementation of `DimensionRecordStorageManager` for single-layer 

`Registry` and the base layers of multi-layer `Registry`. 

 

This manager creates `DimensionRecordStorage` instances for all elements 

in the `DimensionUniverse` in its own `initialize` method, as part of 

static table creation, so it never needs to manage any dynamic registry 

tables. 

 

Parameters 

---------- 

db : `Database` 

Interface to the underlying database engine and namespace. 

records : `NamedKeyDict` 

Mapping from `DimensionElement` to `DimensionRecordStorage` for that 

element. 

universe : `DimensionUniverse` 

All known dimensions. 

""" 

def __init__(self, db: Database, records: NamedKeyDict[DimensionElement, DimensionRecordStorage], *, 

universe: DimensionUniverse): 

super().__init__(universe=universe) 

self._db = db 

self._records = records 

 

@classmethod 

def initialize(cls, db: Database, context: StaticTablesContext, *, 

universe: DimensionUniverse) -> DimensionRecordStorageManager: 

# Docstring inherited from DimensionRecordStorageManager. 

records = NamedKeyDict({}) 

for element in universe.elements: 

ImplementationClass = DimensionRecordStorage.getDefaultImplementation(element) 

records[element] = ImplementationClass.initialize(db, element, context=context) 

return cls(db=db, records=records, universe=universe) 

 

def refresh(self): 

# Docstring inherited from DimensionRecordStorageManager. 

pass 

 

def get(self, element: DimensionElement) -> Optional[DimensionRecordStorage]: 

# Docstring inherited from DimensionRecordStorageManager. 

return self._records.get(element) 

 

def register(self, element: DimensionElement) -> DimensionRecordStorage: 

# Docstring inherited from DimensionRecordStorageManager. 

result = self._records.get(element) 

assert result, "All records instances should be created in initialize()." 

return result 

 

def clearCaches(self): 

# Docstring inherited from DimensionRecordStorageManager. 

for storage in self._records.values(): 

storage.clearCaches()