def delete(self, doc):
        if doc.id is None:
            raise DatabaseException('Document does not have id')
        if doc.sid is None:
            try:
                rs = self.db.docs.remove({'id': doc.id}, safe=True)
                assert rs['n'] == 1
            except Exception as e:
                raise DatabaseException(e)
            return None
        doc.data = None
        return self.update(doc)
def set_add_spinboxes_maximum_on_label_change(self):
        nbits = self.current_label.end - self.current_label.start  # Use Bit Start/End for maximum calc.
        if nbits >= 32:
            nbits = 31
        max_val = 2 ** nbits - 1
        self.ui.sBAddRangeStart.setMaximum(max_val - 1)
        self.ui.sBAddRangeEnd.setMaximum(max_val)
        self.ui.sBAddRangeEnd.setValue(max_val)
        self.ui.sBAddRangeStep.setMaximum(max_val)
        self.ui.spinBoxLowerBound.setMaximum(max_val - 1)
        self.ui.spinBoxUpperBound.setMaximum(max_val)
        self.ui.spinBoxUpperBound.setValue(max_val)
        self.ui.spinBoxBoundaryNumber.setMaximum(int(max_val / 2) + 1)
        self.ui.spinBoxRandomMinimum.setMaximum(max_val - 1)
        self.ui.spinBoxRandomMaximum.setMaximum(max_val)
        self.ui.spinBoxRandomMaximum.setValue(max_val)