Package org.apache.cayenne

Interface DataChannelListener

public interface DataChannelListener

A listener of DataChannel lifecycle events. Changes related to an event are attached as a GraphDiff. If a listener needs to process these changes, the easiest way to do that is via GraphChangeHandler "visitor":

   public void graphChanged(GraphEvent event) {
       GraphChangeHandler handler = ..;
       event.getDiff().apply(handler);
   }
 

Since:

1.2

Method Summary

Modifier and Type	Method	Description
void	graphChanged(GraphEvent event)	Notifies implementing object of the changes that were performed to the object graph externally, not by one of the channel ObjectContexts.
void	graphFlushed(GraphEvent event)	Notifies implementing object that one of the channel ObjectContexts flushed its changes to the channel.
void	graphRolledback(GraphEvent event)	Notifies implementing object that one of the channel ObjectContexts initiated a rollback.

Method Details

graphChanged

void graphChanged(GraphEvent event)

Notifies implementing object of the changes that were performed to the object graph externally, not by one of the channel ObjectContexts.

graphFlushed

void graphFlushed(GraphEvent event)

Notifies implementing object that one of the channel ObjectContexts flushed its changes to the channel.

graphRolledback

void graphRolledback(GraphEvent event)

Notifies implementing object that one of the channel ObjectContexts initiated a rollback.