BaseConnection

class lsst.pipe.base.connectionTypes.BaseConnection(name: str, storageClass: str, doc: str = '', multiple: bool = False, *, deprecated: str | None = None)

Bases: object

Base class used for declaring PipelineTask connections.

Parameters:

namestr

The name used to identify the dataset type.

storageClassstr

The storage class used when (un)/persisting the dataset type.

multiplebool

Indicates if this connection should expect to contain multiple objects of the given dataset type. Tasks with more than one connection with multiple=True with the same dimensions may want to implement PipelineTaskConnections.adjustQuantum to ensure those datasets are consistent (i.e. zip-iterable) in PipelineTask.runQuantum() and notify the execution system as early as possible of outputs that will not be produced because the corresponding input is missing.

deprecatedstr, optional

A description of why this connection is deprecated, including the version after which it may be removed.

If not None, the string is appended to the docstring for this connection and the corresponding config Field.

Attributes Summary

deprecated
doc
multiple

Methods Summary

makeDatasetType(universe[, parentStorageClass])

Construct a true DatasetType instance with normalized dimensions.

Attributes Documentation

deprecated: str | None = None

doc: str = ''

multiple: bool = False

Methods Documentation

makeDatasetType(universe: DimensionUniverse, parentStorageClass: StorageClass | str | None = None) → DatasetType

Construct a true DatasetType instance with normalized dimensions.

Parameters:

universelsst.daf.butler.DimensionUniverse

Set of all known dimensions to be used to normalize the dimension names specified in config.

parentStorageClasslsst.daf.butler.StorageClass or str, optional

Parent storage class for component datasets; None otherwise.

Returns:

datasetTypeDatasetType

The DatasetType defined by this connection.