POjoCache-Internal field modification

[sushajoy]

Hi,
I am using cache1 and cache2, the updations in cache1 are replicated correctly to cache2. But my requirement is to know about this pojo field modifications in cache2. I can't catch out it. How i can notify about the modifications in cache2 ??

[ben.wang]

Currently there is really no good way to detect field modification for remote node. But I have scheduled this feature for 2.1 release since it requires some form of RPC propogation of events. See this Jira:

http://jira.jboss.com/jira/browse/JBCACHE-742

Meanwhile, to get around this, the closest thing is to subscribe the underlying TreeCache event and decode it yourself.

[sushajoy]

Ben,

Can you please guide me to get around this.
How should i subscribe for the event ??

Thanks
Susha

[ben.wang]

Take a look at TreeCacheListener interface and here is a code snippet:

MyTreeCacheListener listener = new MyTreeCacheLister();
cache.addTreeCacheListener(listener);
cache.start();
...

Only caveat is that the notification is on the node level (while fields are stored in the attribute inside the node map). So when a node is modified, you don't know exactly which one except that some attributes inside this node has been modified.

Hope this help.