Field Detail

• NONE

  public static final WatchStats NONE

  Stats that have no watchers attached.

  This could be used as start point to compute new stats using addMode(WatcherMode).

Method Detail

• addMode

  public WatchStats addMode(WatcherMode mode)

  Compute stats after given mode attached to node.

  Parameters:

  mode - watcher mode

  Returns:

  a new stats if given mode is not attached to this node before, otherwise old stats

• removeMode

  public WatchStats removeMode(WatcherMode mode)

  Compute stats after given mode removed from node.

  Parameters:

  mode - watcher mode

  Returns:

  null if given mode is the last attached mode, otherwise a new stats

• hasMode

  public boolean hasMode(WatcherMode mode)

  Check whether given mode is attached to this node.

  Parameters:

  mode - watcher mode

  Returns:

  true if given mode is attached to this node.