网络 会话范围;会话作用域;会话域
SessionScope variables last across requests until the server session ends.
sessionScope变量在多个请求之间有效,直到服务器会话结束。
This time, you will apply a filter to the Relational Record List to select only the records that correspond to the city, as specified by the largestCityVar sessionScope variable.
这时,您将应用一个对关联记录列表的过滤器,只选中相应城市的记录,城市由 largestCityVar sessionScope 变量来指定。