Package org.apache.commons.vfs2.util
Class WeakRefFileListener
java.lang.Object
org.apache.commons.vfs2.util.WeakRefFileListener
- All Implemented Interfaces:
FileListener
Wrap a listener with a WeakReference.
- Since:
- 2.0
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Constructor Summary
ConstructorsModifierConstructorDescriptionprotected
WeakRefFileListener
(FileObject file, FileListener listener) -
Method Summary
Modifier and TypeMethodDescriptionvoid
fileChanged
(FileChangeEvent event) Called when a file is changed.void
fileCreated
(FileChangeEvent event) Called when a file is created.void
fileDeleted
(FileChangeEvent event) Called when a file is deleted.protected FileListener
returns the wrapped listener.static void
installListener
(FileObject file, FileListener listener) This will install thelistener
at the givenfile
.
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Constructor Details
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WeakRefFileListener
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Method Details
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installListener
This will install thelistener
at the givenfile
.- Parameters:
file
- The FileObject to listen on.listener
- The FileListener
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getListener
returns the wrapped listener. If it is gone, the WeakRefFileListener wrapper will remove itself from the list of listeners.- Returns:
- The FileListener.
- Throws:
Exception
- if an error occurs.
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fileCreated
Called when a file is created.- Specified by:
fileCreated
in interfaceFileListener
- Parameters:
event
- The FileChangeEvent.- Throws:
Exception
- if an error occurs.
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fileDeleted
Called when a file is deleted.- Specified by:
fileDeleted
in interfaceFileListener
- Parameters:
event
- The FileChangeEvent.- Throws:
Exception
- if an error occurs.
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fileChanged
Called when a file is changed.This will only happen if you monitor the file using
FileMonitor
.- Specified by:
fileChanged
in interfaceFileListener
- Parameters:
event
- The FileChangeEvent.- Throws:
Exception
- if an error occurs.
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