def get_dimension_from_db_by_name(dimension_name):
    """
        Gets a dimension from the DB table.
    """
    try:
        dimension = db.DBSession.query(Dimension).filter(Dimension.name==dimension_name).one()
        return JSONObject(dimension)
    except NoResultFound:
        raise ResourceNotFoundError("Dimension %s not found"%(dimension_name))
Gets a dimension from the DB table.