def save(self, doc):
        if doc.id:
            return self.update(doc)
        else:
            return self.insert(doc)
def limitStrLessThen128Char(self, strStr=None):
        if len(strStr) > 128:
            logging.info("limit str less then 128 char")
            return strStr[:127] + u"_"
        else:
            return strStr