lsst.pex.config.configChoiceField.SelectionSet Class Reference

Inheritance diagram for lsst.pex.config.configChoiceField.SelectionSet:

Public Member Functions
def	__init__
def	add
def	discard
def	__len__
def	__iter__
def	__contains__
def	__repr__
def	__str__

Private Attributes
	_dict
	_field
	_config
	__history
	_set

Detailed Description

Custom set class used to track the selection of multi-select
ConfigChoiceField.

This class allows user a multi-select ConfigChoiceField to add/discard
items from the set of active configs. Each change to the selection is
tracked in the field's history.

Definition at line 29 of file configChoiceField.py.

Constructor & Destructor Documentation

def lsst.pex.config.configChoiceField.SelectionSet.__init__	(		self,
			dict_,
			value,
			at = None,
			label = "assignment",
			setHistory = True
	)

Definition at line 38 of file configChoiceField.py.

    def __init__(self, dict_, value, at=None, label="assignment", setHistory=True):
        if at is None:
            at = traceback.extract_stack()[:-1]
        self._dict = dict_;
        self._field = self._dict._field
        self._config = self._dict._config
        self.__history = self._config._history.setdefault(self._field.name, [])
        if value is not None:
            try:
                for v in value:
                    if v not in self._dict:
                        #invoke __getitem__ to ensure it's present
                        self._dict.__getitem__(v, at=at)
            except TypeError:
                msg = "Value %s is of incorrect type %s. Sequence type expected"(value, _typeStr(value))
                raise FieldValidationError(self._field, self._config, msg)
            self._set=set(value)
        else:
            self._set=set()

        if setHistory:
            self.__history.append(("Set selection to %s"%self, at, label))