Location

class lsst.daf.butler.Location(datastoreRootUri, path)

Bases: object

Identifies a location within the Datastore.

Parameters

datastoreRootUriButlerURI or str

Base URI for this datastore, must include an absolute path.

pathstr

Relative path within datastore. Assumed to be using the local path separator if a file scheme is being used for the URI, else a POSIX separator.

Attributes Summary

netloc	The URI network location.
path	Path corresponding to location.
pathInStore	Path corresponding to location relative to Datastore root.
relativeToPathRoot	Returns the path component of the URI relative to the network location.
uri	URI string corresponding to fully-specified location in datastore.

Methods Summary

updateExtension(ext)

Update the file extension associated with this Location.

Attributes Documentation

netloc

The URI network location.

path

Path corresponding to location.

This path includes the root of the Datastore, but does not include non-path components of the root URI. If a file URI scheme is being used the path will be returned with the local OS path separator.

pathInStore

Path corresponding to location relative to Datastore root.

Uses the same path separator as supplied to the object constructor.

relativeToPathRoot

Returns the path component of the URI relative to the network location.

Effectively, this is the path property with POSIX separator stripped from the left hand side of the path.

uri

URI string corresponding to fully-specified location in datastore.

Methods Documentation

updateExtension(ext)

Update the file extension associated with this Location.

Parameters

extstr

New extension. If an empty string is given any extension will be removed. If None is given there will be no change.