dal.py 文件源码

def represent(self, obj, fieldtype):
        # the base adatpter does not support MongoDB ObjectId
        if isinstance(obj, self.ObjectId):
            value = obj
        else:
            value = NoSQLAdapter.represent(self, obj, fieldtype)
        # reference types must be convert to ObjectID
        if fieldtype == 'date':
            if value is None:
                return value
            # this piece of data can be stripped off based on the fieldtype
            t = datetime.time(0, 0, 0)
            # mongodb doesn't has a date object and so it must datetime,
            # string or integer
            return datetime.datetime.combine(value, t)
        elif fieldtype == 'time':
            if value is None:
                return value
            # this piece of data can be stripped of based on the fieldtype
            d = datetime.date(2000, 1, 1)
            # mongodb doesn't has a  time object and so it must datetime,
            # string or integer
            return datetime.datetime.combine(d, value)
        elif fieldtype == "blob":
            if value is None:
                return value
            from bson import Binary
            if not isinstance(value, Binary):
                if not isinstance(value, basestring):
                    return Binary(str(value))
                return Binary(value)
            return value
        elif (isinstance(fieldtype, basestring) and
              fieldtype.startswith('list:')):
            if fieldtype.startswith('list:reference'):
                newval = []
                for v in value:
                    newval.append(self.object_id(v))
                return newval
            return value
        elif ((isinstance(fieldtype, basestring) and
               fieldtype.startswith("reference")) or
               (isinstance(fieldtype, Table)) or fieldtype == "id"):
            value = self.object_id(value)
        return value