Package org.alfresco.filesys.alfresco

Interface ShuffleCache

All Known Implementing Classes:
ShuffleCacheImpl
public interface ShuffleCache
Cache for alfresco "save shuffles" which are used by some applications to compensate for a most computer filesystem being non atomic.

Overlays an Alfresco repository with temporary files being created and soft deleted from folders that are likely to have save shuffles going on.

Implementations must be thread safe

  • Method Details

    • createTemporaryFile

      void createTemporaryFile(String path)
      Add a new temporary file to the "shuffle cache". Content is not persisted in the alfresco repo until either a rename occurs or after a time delay.

    • softDelete

      void softDelete(String path)
      Soft delete a file. The file may be re-instated later or the delete made permenant after a time delay.

    • renameTemporaryFile

      void renameTemporaryFile(String oldPath, String newPath)
      Takes the contents of a temporary file and applies it to the new path.

      If the new path has been soft deleted then the soft delete is removed.

      After the contents of the temporary file have been written the it may may be made available for garbage collection.

      Parameters:
      oldPath - the location of the temporaryFile
      newPath - the location of the new file.

    • isShuffleDirectory

      boolean isShuffleDirectory(String dir)
      Does the specified directory contain a shuffled temporary file
      Parameters:
      dir - String
      Returns:
      boolean

    • isDeleted

      boolean isDeleted(String path)
      Has the path been "soft deleted"

    • isCreated

      boolean isCreated(String path)
      Has the path been "soft created"
      Parameters:
      path - String
      Returns:
      boolean