base.py 文件源码

def _get_column_info(self, name, type_, nullable, autoincrement, default,
                         precision, scale, length):

        coltype = self.ischema_names.get(type_, None)

        kwargs = {}

        if coltype in (NUMERIC, DECIMAL):
            args = (precision, scale)
        elif coltype == FLOAT:
            args = (precision,)
        elif coltype in (CHAR, VARCHAR, UNICHAR, UNIVARCHAR, NCHAR, NVARCHAR):
            args = (length,)
        else:
            args = ()

        if coltype:
            coltype = coltype(*args, **kwargs)
            # is this necessary
            # if is_array:
            #     coltype = ARRAY(coltype)
        else:
            util.warn("Did not recognize type '%s' of column '%s'" %
                      (type_, name))
            coltype = sqltypes.NULLTYPE

        if default:
            default = re.sub("DEFAULT", "", default).strip()
            default = re.sub("^'(.*)'$", lambda m: m.group(1), default)
        else:
            default = None

        column_info = dict(name=name, type=coltype, nullable=nullable,
                           default=default, autoincrement=autoincrement)
        return column_info