Coverage for python/lsst/daf/butler/core/fileDataset.py : 57%

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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/>.
22from __future__ import annotations
24__all__ = ["FileDataset"]
26from dataclasses import dataclass
27from typing import (
28 Any,
29 List,
30 Optional,
31 Union,
32)
35from .datasets import DatasetRef
36from .formatter import FormatterParameter
39@dataclass
40class FileDataset:
41 """A struct that represents a dataset exported to a file.
42 """
43 __slots__ = ("refs", "path", "formatter")
45 refs: List[DatasetRef]
46 """Registry information about the dataset. (`list` of `DatasetRef`).
47 """
49 path: str
50 """Path to the dataset (`str`).
52 If the dataset was exported with ``transfer=None`` (i.e. in-place),
53 this is relative to the datastore root (only datastores that have a
54 well-defined root in the local filesystem can be expected to support
55 in-place exports). Otherwise this is relative to the directory passed
56 to `Datastore.export`.
57 """
59 formatter: Optional[FormatterParameter]
60 """A `Formatter` class or fully-qualified name.
61 """
63 def __init__(self, path: str, refs: Union[DatasetRef, List[DatasetRef]], *,
64 formatter: Optional[FormatterParameter] = None):
65 self.path = path
66 if isinstance(refs, DatasetRef):
67 refs = [refs]
68 self.refs = refs
69 self.formatter = formatter
71 def __lt__(self, other: Any) -> bool:
72 # Sort on path alone
73 if not isinstance(other, type(self)):
74 return NotImplemented
75 return self.path < other.path