@startuml

title 元数据结构类图
scale 1.5

start
:"从数据库中获取到vo";
:"DataNodeTransferService.transfer(MetaCore)";
:"遍历DataNodeTransferService";
if ("判断DataNodeTransfer") then (true)
    :"key匹配时直接返回XXTransfer.transfer";
else
    :"返回初始化无意义的Vo";
endif
stop
@enduml