interface
NodeAcl ¶
Bases: Enum
Metador node soft access control flags.
Soft means - they can be bypassed, it is about trying to prevent errors.
Group nodes inherit their ACL flags to child nodes.
Source code in src/metador_core/container/interface.py
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read_only
class-attribute
instance-attribute
¶
read_only = auto()
Forbid calling methods mutating contents of (meta)data.
local_only
class-attribute
instance-attribute
¶
local_only = auto()
Forbid access to parents beyond the initial local node.
skel_only
class-attribute
instance-attribute
¶
skel_only = auto()
Forbid reading datasets and metadata, only existence can be checked.
StoredMetadata
dataclass
¶
Information about a metadata schema instance stored at a node.
Source code in src/metador_core/container/interface.py
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uuid
instance-attribute
¶
uuid: UUID
UUID identifying the metadata object in the container.
Used for bookkeeping, i.e. keeping the container TOC in sync.
to_path ¶
to_path()
Return path of metadata object.
(E.g. to return canonical path for copying TOC link nodes)
Source code in src/metador_core/container/interface.py
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from_node
staticmethod
¶
from_node(obj: H5DatasetLike) -> StoredMetadata
Instantiate info about a stored metadata node.
Source code in src/metador_core/container/interface.py
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MetadorMeta ¶
Interface to Metador metadata objects stored at a single HDF5 node.
Source code in src/metador_core/container/interface.py
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keys ¶
keys() -> KeysView[str]
Return names of explicitly attached metadata objects.
Transitive parent schemas are not included.
Source code in src/metador_core/container/interface.py
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__len__ ¶
__len__() -> int
Return number of explicitly attached metadata objects.
Transitive parent schemas are not counted.
Source code in src/metador_core/container/interface.py
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__iter__ ¶
__iter__() -> Iterator[str]
Iterate listing schema names of all actually attached metadata objects.
Transitive parent schemas are not included.
Source code in src/metador_core/container/interface.py
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query ¶
query(
schema: Union[
str,
Tuple[str, Optional[SemVerTuple]],
PluginRef,
Type[MetadataSchema],
] = "",
version: Optional[SemVerTuple] = None,
) -> Iterator[PluginRef]
Return schema names for which objects at this node are compatible with passed schema.
Will also consider compatible child schema instances.
Returned iterator will yield passed schema first, if an object is available. Apart from this, the order is not specified.
Source code in src/metador_core/container/interface.py
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__contains__ ¶
__contains__(
schema: Union[
str,
Tuple[str, Optional[SemVerTuple]],
PluginRef,
Type[MetadataSchema],
]
) -> bool
Check whether a compatible metadata object for given schema exists.
Will also consider compatible child schema instances.
Source code in src/metador_core/container/interface.py
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__getitem__ ¶
__getitem__(
schema: Union[str, Type[S]]
) -> Union[S, MetadataSchema]
Like get, but will raise KeyError on failure.
Source code in src/metador_core/container/interface.py
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get ¶
get(
schema: Union[str, Type[S]],
version: Optional[SemVerTuple] = None,
) -> Optional[Union[MetadataSchema, S]]
Get a parsed metadata object matching the given schema (if it exists).
Will also consider compatible child schema instances.
Source code in src/metador_core/container/interface.py
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__setitem__ ¶
__setitem__(
schema: Union[str, Type[S]],
value: Union[Dict[str, Any], MetadataSchema],
) -> None
Store metadata object as instance of given schema.
Raises KeyError if passed schema is not installed in environment.
Raises TypeError if passed schema is marked auxiliary.
Raises ValueError if an object for the schema already exists.
Raises ValidationError if passed object is not valid for the schema.
Source code in src/metador_core/container/interface.py
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__delitem__ ¶
__delitem__(
schema: Union[str, Type[MetadataSchema]]
) -> None
Delete metadata object explicitly stored for the passed schema.
If a schema class is passed, its version is ignored, as each node may contain at most one explicit instance per schema.
Raises KeyError if no metadata object for that schema exists.
Source code in src/metador_core/container/interface.py
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TOCLinks ¶
Link management for synchronizing metadata objects and container TOC.
Source code in src/metador_core/container/interface.py
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fresh_uuid ¶
fresh_uuid() -> UUID
Return a UUID string not used for a metadata object in the container yet.
Source code in src/metador_core/container/interface.py
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resolve ¶
resolve(uuid: UUID) -> str
Get the path a UUID in the TOC points to.
Source code in src/metador_core/container/interface.py
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update ¶
update(uuid: UUID, new_target: str)
Update target of an existing link to point to a new location.
Source code in src/metador_core/container/interface.py
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register ¶
register(obj: StoredMetadata) -> None
Create a link for a metadata object in container TOC.
The link points to the metadata object.
Source code in src/metador_core/container/interface.py
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unregister ¶
unregister(uuid: UUID) -> None
Unregister metadata object in TOC given its UUID.
Will remove the object and clean up empty directories in the TOC.
Source code in src/metador_core/container/interface.py
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find_broken ¶
find_broken(repair: bool = False) -> List[UUID]
Return list of UUIDs in TOC not pointing to an existing metadata object.
Will use loaded cache of UUIDs and check them, without scanning the container.
If repair is set, will remove those broken links.
Source code in src/metador_core/container/interface.py
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find_missing ¶
find_missing(path: H5GroupLike) -> List[H5DatasetLike]
Return list of metadata objects not listed in TOC.
Source code in src/metador_core/container/interface.py
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repair_missing ¶
repair_missing(
missing: List[H5DatasetLike], update: bool = False
) -> None
Repair links (objects get new UUIDs, unless update is true).
Source code in src/metador_core/container/interface.py
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TOCSchemas ¶
Schema management for schemas used in the container.
Interface is made to mimic PGSchema wherever it makes sense.
Source code in src/metador_core/container/interface.py
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packages
property
¶
packages: TOCPackages
Like PluginGroup.packages, but with respect to schemas used in container.
provider ¶
provider(schema_ref: PluginRef) -> PluginPkgMeta
Like PluginGroup.provider, but with respect to container deps.
Source code in src/metador_core/container/interface.py
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parent_path ¶
parent_path(
schema, version: Optional[SemVerTuple] = None
) -> List[PluginRef]
Like PGSchema.parent_path, but with respect to container deps.
Source code in src/metador_core/container/interface.py
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versions ¶
versions(
p_name: str, version: Optional[SemVerTuple] = None
) -> List[PluginRef]
Like PGSchema.versions, but with respect to container deps.
Source code in src/metador_core/container/interface.py
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children ¶
children(
schema, version: Optional[SemVerTuple] = None
) -> Set[PluginRef]
Like PGSchema.children, but with respect to container deps.
Source code in src/metador_core/container/interface.py
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TOCPackages ¶
Package metadata management for schemas used in the container.
The container will always store for each schema used in the information about one package providing that schema.
If there are multiple providers of the same schema, the first/existing one is preferred.
Source code in src/metador_core/container/interface.py
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MetadorContainerTOC ¶
Interface to the Metador metadata index (table of contents) of a container.
Source code in src/metador_core/container/interface.py
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driver
property
¶
driver: Type[MetadorDriver]
Return the container driver class used by the container.
source
property
¶
source: Any
Return data underlying thes container (file, set of files, etc. used with the driver).
spec_version
property
¶
spec_version: List[int]
Return Metador container specification version of the container.
schemas
property
¶
schemas
Information about all schemas used for metadata objects in this container.
query ¶
query(
schema: Union[str, Type[S]],
version: Optional[SemVerTuple] = None,
*,
node: Optional[MetadorNode] = None
) -> Iterator[MetadorNode]
Return nodes that contain a metadata object compatible with the given schema.
Source code in src/metador_core/container/interface.py
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