How to use

checkIsDirectory

method

in

org.apache.hadoop.hdfs.server.namenode.FSPermissionChecker

/** Guarded by {@link FSNamesystem#readLock()}
 * @throws AccessControlException
 * @throws ParentNotDirectoryException
 * @throws UnresolvedPathException
 */
private void checkTraverse(INodeAttributes[] inodeAttrs, INode[] inodes,
  byte[][] components, int last) throws AccessControlException,
    UnresolvedPathException, ParentNotDirectoryException {
 for (int i=0; i <= last; i++) {
  checkIsDirectory(inodes[i], components, i);
  check(inodeAttrs, components, i, FsAction.EXECUTE);
 }
}

private static void checkSimpleTraverse(INodesInPath iip)
  throws UnresolvedPathException, ParentNotDirectoryException {
 byte[][] components = iip.getPathComponents();
 for (int i=0; i < iip.length() - 1; i++) {
  INode inode = iip.getINode(i);
  if (inode == null) {
   break;
  }
  checkIsDirectory(inode, components, i);
 }
}