org.springframework.integration.file.locking
Class NioFileLocker

java.lang.Object
  org.springframework.integration.file.AbstractFileListFilter
      org.springframework.integration.file.locking.BaseLockingFilter
          org.springframework.integration.file.locking.NioFileLocker

All Implemented Interfaces:

FileListFilter, FileLocker

public class NioFileLocker
extends BaseLockingFilter

File locking strategy that uses java.nio. The locks taken by FileChannel are shared with all the threads in a single JVM, so this locking strategy does not prevent files being picked up multiple times within the same JVM. FileReadingMessageSources sharing a Locker will not pick up the same files. This implementation will acquire or create a FileLock for the given file. Caching locks might be expensive, so this locking strategy is not recommended for scenarios where many files are accessed in parallel.

Since:

2.0

Author:

Iwein Fuld, Mark Fisher

Constructor Summary

NioFileLocker()

Method Summary

boolean	lock(java.io.File fileToLock) Tries to lock the given file and returns true if it was successful, false otherwise.
void	unlock(java.io.File fileToUnlock) Unlocks the given file.

Methods inherited from class org.springframework.integration.file.locking.BaseLockingFilter

accept

Methods inherited from class org.springframework.integration.file.AbstractFileListFilter

filterFiles

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

NioFileLocker

public NioFileLocker()

Method Detail

lock

public boolean lock(java.io.File fileToLock)

Tries to lock the given file and returns true if it was successful, false otherwise.

unlock

public void unlock(java.io.File fileToUnlock)

Description copied from interface: FileLocker

Unlocks the given file.