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Bug 195550 - Recursive listener do not deliver all fileDeleted events.
Summary: Recursive listener do not deliver all fileDeleted events.
Status: NEW
Alias: None
Product: platform
Classification: Unclassified
Component: Filesystems (show other bugs)
Version: 7.0
Hardware: PC Mac OS X
: P3 normal (vote)
Assignee: Tomas Zezula
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2011-02-16 11:06 UTC by Tomas Zezula
Modified: 2013-05-30 14:10 UTC (History)
2 users (show)

See Also:
Issue Type: DEFECT
Exception Reporter:

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Description Tomas Zezula 2011-02-16 11:06:06 UTC 
Having the following scenerio:
prj
 -build
      -gen-classes
            -org/netbeans/api/java/project/Bundle.java
            -org/netbeans/modules/java/project/ui/Bundle.java

The recursive listener is attached to gen-classes folder which has 2 files created in it.
The clean deletes the build folder.
Only single file event is delivered (randomly for either org/netbeans/api/java/project/Bundle.java or org/netbeans/modules/java/project/ui/Bundle.java).

The native listener OSXWatcher correctly delivered event about change in build:
FINE [org.netbeans.modules.masterfs.watcher.OSXNotifier]: Event on /Users/tom/Projects/netbeans/test/java.project/build/classes-generated/org/netbeans/modules/java/project/ 0
FINE [org.netbeans.modules.masterfs.watcher.OSXNotifier]: Event on /Users/tom/Projects/netbeans/test/java.project/build/classes-generated/org/netbeans/spi/java/project/support/ui/ 0
Comment 1 Tomas Zezula 2011-02-16 11:12:25 UTC 
Also the following change was delivered:

FINE [org.netbeans.modules.masterfs.watcher.OSXNotifier]: Event on /Users/tom/Projects/netbeans/test/java.project/ 0
Comment 2 Tomas Zezula 2011-02-16 11:19:37 UTC 
I've looked into doc and according to it it may happen that only the /Users/tom/Projects/netbeans/test/java.project/ can be delivered for delete.
Comment 3 Jaroslav Tulach 2011-02-18 18:14:36 UTC 
As far as I can tell, the API asked you to listen on some/folder/path via addWatch method, so it is reasonable to expect that if there was some change, you will deliver change for some/folder/path and not for some/ or some/folder/, right?

If you are able to detect this case, then you can deliver ALL_CHANGE. If you are unable to detect this kind of event collapsing, then I guess we are out of luck.

Anyway the fix needs to be done primarily in OSXNotifier, which is your creation, so passing back to you, Tomáši.
Comment 4 Tomas Zezula 2011-02-19 10:35:15 UTC 
I can do it in OSXNotifier. Originally I did it but Nejedlak remove the filtering due to performance reasons. As far as I remember the reason was that FS does the same in more efficient way.