def get_tb(self, tb_id, cols=(), user_id=None, groups=[]):
"""
获取表、分配表的基本信息，返回字段列表等信息，默认返回表的所有信息
如果需要获取表的使用者创建的计算字段信息，必须传user_id
:param tb_id:
:param cols:
:param user_id:
:return:
"""
# 如果是sh_开头的tb_id一定是分享表id，分享表在使用上和普通的表是一样的，只是多出了过滤条件信息
# todo 需要对删除虚拟列的Aggregator
if tb_id.find('sh_') == 0:
sh_id = tb_id
share_model = Share()
share_info = share_model.get_one(sh_id)
if not share_info:
self.logger.warn('分享表不存在：' + sh_id)
return None
tb_id = share_info[Share.TB_ID]
tb_info = self.get_tb_info(tb_id, user_id, cols, groups=groups)
if not tb_info:
self.logger.warn('分享表对应的数据表不存在：sh_id:%s, tb_id:%s' %
(sh_id, tb_id))
return None
tb_info[Share.ROW_FILTER] = share_info[Share.ROW_FILTER]
tb_info[Share.IS_FIXED] = share_info[Share.IS_FIXED]
# 使用share的version替换tb的version，因为share的过滤条件有可能有修改，需要单独记录版本号
tb_info[TB.VERSION] = share_info[Share.VERSION]
tb_info[TB.DATA_COUNT] = share_info[Share.DATA_COUNT]
return tb_info
else:
tb_info = self.get_tb_info(tb_id, user_id, cols)
if not tb_info:
return None
# fields = tb_info[TB.FIELDS]
# self.change_aggregator(fields)
return tb_info
