AbstractPreferences.RemoveNode Method
Definition
Important
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Implements the removeNode() method as per the specification in
Preferences#removeNode().
[Android.Runtime.Register("removeNode", "()V", "GetRemoveNodeHandler")]
public override void RemoveNode ();[<Android.Runtime.Register("removeNode", "()V", "GetRemoveNodeHandler")>]
override this.RemoveNode : unit -> unit- Attributes
Exceptions
Remarks
Implements the removeNode() method as per the specification in Preferences#removeNode().
This implementation checks to see that this node is the root; if so, it throws an appropriate exception. Then, it locks this node's parent, and calls a recursive helper method that traverses the subtree rooted at this node. The recursive method locks the node on which it was called, checks that it has not already been removed, and then ensures that all of its children are cached: The #childrenNamesSpi() method is invoked and each returned child name is checked for containment in the child-cache. If a child is not already cached, the #childSpi(String) method is invoked to create a Preferences instance for it, and this instance is put into the child-cache. Then the helper method calls itself recursively on each node contained in its child-cache. Next, it invokes #removeNodeSpi(), marks itself as removed, and removes itself from its parent's child-cache. Finally, if there are any node change listeners, it enqueues a notification event for processing by the event dispatch thread.
Note that the helper method is always invoked with all ancestors up to the "closest non-removed ancestor" locked.
Java documentation for java.util.prefs.AbstractPreferences.removeNode().
Portions of this page are modifications based on work created and shared by the Android Open Source Project and used according to terms described in the Creative Commons 2.5 Attribution License.