lsst.daf.persistence.butlerFactory.ButlerFactory Class Reference

Inheritance diagram for lsst.daf.persistence.butlerFactory.ButlerFactory:

Public Member Functions
def	__init__
def	create

Public Attributes
	mapper

Detailed Description

ButlerFactory creates data Butlers containing data mappers.  Use of it
is deprecated in favor of the direct Butler constructor.

The ButlerFactory class takes a mapper for a data collection.
It can then create Butlers with these mappers.

A data identifier is a dictionary.  The keys match those understood by a
mapper; the values select particular data sets or collections of data
sets.  For example, one key might be "visit".  Specifying a value of
"695934" for this key might select a collection of images.

The mappers perform four functions:
  1. Determine what keys are valid for dataset ids.
  2. Obtain a collection of potential dataset ids matching a
     partial dataset id.
  3. Map a dataset id to the location of the dataset, including its
     C++ and Python types.
  4. Manipulate a retrieved dataset object so that it conforms to a
     standard.

Public methods:

__init__(self, mapper)

create(self)

Definition at line 31 of file butlerFactory.py.

Constructor & Destructor Documentation

def lsst.daf.persistence.butlerFactory.ButlerFactory.__init__	(		self,
			mapper
	)

Construct a ButlerFactory.

@param mapper mapper object.

Definition at line 59 of file butlerFactory.py.

    def __init__(self, mapper):
        """Construct a ButlerFactory.

        @param mapper mapper object.
        """

        self.mapper = mapper