oracle.jdeveloper.java.provider
Class CachedFileProvider.NodeObserver

java.lang.Object
  oracle.ide.model.NodeListener
      oracle.jdeveloper.java.provider.CachedFileProvider.NodeObserver

All Implemented Interfaces:

Observer

Enclosing class:

CachedFileProvider

protected class CachedFileProvider.NodeObserver

extends NodeListener

implements Observer

The NodeObserver attaches to nodes for which we have created SourceFile instances for, and tracks the given node until the node is closed, or renamed. This observer will take care of expiring the SourceFile for the given URL when these events occur, or when the node is modified or reloaded.

Constructor Summary

protected

CachedFileProvider.NodeObserver(Node node, java.net.URL sourceURL)

Method Summary

void	nodeClosed(NodeEvent event) Called after a Node has been closed.
void	nodeRenamed(NodeEvent event, java.net.URL oldURL, java.net.URL newURL) Called after a Node has been renamed and recached under the new URL in the NodeFactory.
void	update(java.lang.Object observed, UpdateMessage change) Notification message.

Methods inherited from class oracle.ide.model.NodeListener

nodeDeleted, nodeDirtyStateChanged, nodeOpened, nodeReverted, nodeSaved, nodeWillBeSaved, nodeWillClose, nodeWillOpen

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

CachedFileProvider.NodeObserver

protected CachedFileProvider.NodeObserver(Node node,
                                          java.net.URL sourceURL)

Method Detail

nodeClosed

public void nodeClosed(NodeEvent event)

Description copied from class: NodeListener

Called after a Node has been closed.

Overrides:

nodeClosed in class NodeListener

Parameters:

event - the object containing information about this event

nodeRenamed

public void nodeRenamed(NodeEvent event,
                        java.net.URL oldURL,
                        java.net.URL newURL)

Description copied from class: NodeListener

Called after a Node has been renamed and recached under the new URL in the NodeFactory.

Overrides:

nodeRenamed in class NodeListener

Parameters:

event - the object containing information about this event. Calling e.getNode() will return the old Node. To get the new Node, call NodeFactory.find(newURL). Both old and new Nodes remain available while NodeListeners are being called with the nodeRenamed event. In the case where renaming did not cause the Node type to change, both old Node and new Node will be the exact same object, so using the oldURL parameter is the only reliable way to know the URL of the Node before it was renamed. If the Node type did change, the old Node is removed from the NodeFactory cache immediately after all NodeListeners have been called with the nodeRenamed event.

oldURL - the old URL of the Node before the rename

newURL - the new URL of the Node after the rename

update

public void update(java.lang.Object observed,
                   UpdateMessage change)

Description copied from interface: Observer

Notification message. Subjects call this method when they notify their observers that the subjects state has changed.

Specified by:

update in interface Observer

Parameters:

observed - the subject whose state has changed.

change - what has changed.