Class NullFilesCache

java.lang.Object
org.apache.commons.vfs2.provider.AbstractVfsComponent
org.apache.commons.vfs2.cache.AbstractFilesCache
org.apache.commons.vfs2.cache.NullFilesCache
All Implemented Interfaces:
Closeable, AutoCloseable, FilesCache, VfsComponent
public class NullFilesCache extends AbstractFilesCache
A FilesCache implementation.

This implementation never ever caches a single file.

Notice: if you use resolveFile(uri) multiple times with the same path, the system will always create a new instance. Changes on one instance of this file are not seen by the others.

  • Constructor Details

    • NullFilesCache

      public NullFilesCache()

  • Method Details

    • putFile

      public void putFile(FileObject file)
      Description copied from interface: FilesCache
      Adds a FileObject to the cache.
      Parameters:
      file - the file

    • putFileIfAbsent

      public boolean putFileIfAbsent(FileObject file)
      Description copied from interface: FilesCache
      Adds a FileObject to the cache if it isn't already present.
      Parameters:
      file - the file
      Returns:
      true if the file was stored, false otherwise.

    • getFile

      public FileObject getFile(FileSystem filesystem, FileName name)
      Description copied from interface: FilesCache
      Retrieves a FileObject from the cache by name.
      Parameters:
      filesystem - The FileSystem.
      name - the name
      Returns:
      the file object or null if file is not cached

    • clear

      public void clear(FileSystem filesystem)
      Description copied from interface: FilesCache
      Purges the entries corresponding to the FileSystem.
      Parameters:
      filesystem - The FileSystem.

    • removeFile

      public void removeFile(FileSystem filesystem, FileName name)
      Description copied from interface: FilesCache
      Removes a file from cache.
      Parameters:
      filesystem - file system
      name - file name