def __init__(self, table_alias, field):
        assert isinstance(table_alias, basestring)
        self.table_alias = table_alias
        self.field = field
Fetches an individual object on the resource.
dataset/ETHPy150Open uwescience/raco/raco/expression/expression.py/DottedRef.__init__--crossover with--dataset/ETHPy150Open toastdriven/piecrust/piecrust/resources.py/Resource.obj_get