def all(self):
        return self
encodes a number to a scaled integer
dataset/ETHPy150Open AppScale/appscale/AppServer/lib/django-1.5/django/db/models/query.py/EmptyQuerySet.all--crossover with--dataset/ETHPy150Open VisTrails/VisTrails/vistrails/gui/mashups/mashups_widgets.py/QSliderWidget.setContents