如何使用 JDK 7 区分文件删除和目录删除？
我正在使用 JDK 7 的 WatchService 来监视目录。
ENTRY_DELETE 事件告诉我一个条目已被删除。我可以通过执行类似以下操作来获取该条目的名称：
WatchEvent<Path> ev = cast(event);
Path name = ev.context();
Path child = dir.resolve(name);
我想知道删除的条目是文件还是文件夹。当然，我尝试了 child.isDirectory() 但这当然不起作用，因为该元素不再存在。
有没有什么方法，无需启发式，就能判断删除的元素是文件还是目录？
I am using JDK 7's WatchService to monitor directories.
The ENTRY_DELETE event tells me an entry has been deleted. I can get the name of that entry doing something similar to:
WatchEvent<Path> ev = cast(event);
Path name = ev.context();
Path child = dir.resolve(name);
I want to know if the deleted entry was a file or folder. Naturally, I tried child.isDirectory() but that didn't work, of course, because the element doesn't exist any more.
Is there any way, without heuristics, telling if the deleted element was a file or a directory?
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不幸的是，由于 WatchService 构建在本机操作系统的文件事件服务之上，因此它受到本机服务提供的信息的限制。 Linux 的 inotify 确实指示删除了哪种类型的文件系统对象，但 Microsoft 的 FileSystemWatcher 只是给出名称。
Unfortunately, since WatchService is built on top of the native OS's file event service, it is limited by the information the native service provides. Linux's inotify does indicate what type of filesystem object was deleted, but Microsoft's FileSystemWatcher just gives the name.