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    • 14. 发明授权
    • Efficient computation of aggregated data in containers supporting item level access control
    • 在容器中有效计算聚合数据,支持项目级访问控制
    • US06480851B1
    • 2002-11-12
    • US09411595
    • 1999-10-04
    • F. Soner Terek
    • F. Soner Terek
    • G06F1730
    • G06F17/30067Y10S707/99939
    • A computer system data container such as a directory or data folder includes various items (e.g., e-mail messages) having item level security controls. In this invention, the computer system ignores files for which the viewer has no viewing rights when summary data about the data container is displayed on the viewer's monitor. For each item level security setting, a running total is kept of an aggregate property (e.g., count of, size of) of all the items in the directory or folder of that security setting. Changes to the running total occur as items are added or deleted, or edited if the aggregate property is the size of all items of that security setting. Regardless of what the aggregated data is, the computer system adds only the running totals for which the user has viewing rights when computing summary data. Thus, the user cannot infer anything about non-viewable items from the summary data.
    • 诸如目录或数据文件夹的计算机系统数据容器包括具有物品级安全控制的各种项目(例如,电子邮件消息)。 在本发明中,当在观看者的监视器上显示关于数据容器的概要数据时,计算机系统忽略观众没有观看权限的文件。 对于每个项目级安全设置,运行总计保留该安全设置的目录或文件夹中的所有项目的聚合属性(例如,大小)。 运行总计的更改发生在添加或删除项目时,或者如果聚合属性是该安全性设置的所有项目的大小,则会进行编辑。 无论聚合数据是什么,计算机系统只会在计算汇总数据时添加用户具有查看权限的运行总计。 因此,用户不能从摘要数据中推断出不可见项目的任何内容。