Virtual File System (VFS) code examples

The virtial file system allows the same operations as you are may know form java.io but names and behavior is a bit different.

• Find a file or folder vfs style: If you are shure it is a folder you can resolve and cast it immediatly

  VFSContainer folder = (VFSContainer) wikiContainer.resolve(WIKI_FOLDER_NAME);

  if you are not shure whether it is a file or a folder you get an VFSItem as result of a resolve operatin and have to check with:

  	
  if (item instanceof VFSLeaf) {
  VFSLeaf leaf = (VFSLeaf)item;
  

• Get a folder in the OLAT bcroot/repository hierarchie:

  VFSContainer rootContainer = FileResourceManager.getInstance().getFileResourceRootImpl(ores);
  

• To write of read from a vfs file you have to get the OutputStream from the leave where your can read of write with support of the FileUtils class:

  VFSLeaf leaf = wikiContentContainer.createChildLeaf(filename);
  FileUtils.save(leaf.getOutputStream(false), content, "utf-8");