How to get cache size programmatically

[somboss]

Hi, I am using jboss cache core 3.1.0 and want to display cache size (the number of nodes in it). But looking at APIs, Cache doesn't support method to get this information, however this is available in CacheSPI. But I can not use this interface directly in my code as per documentation

A reference to this interface should only be obtained when it is passed in to your code, for example when you write an CommandInterceptor or CacheLoader. You should NEVER attempt to directly cast a Cache instance to this interface. In future, the implementation may not allow it.

As I am not using CacheLoader and I dont want to write CommandInterceptor how this can be done?

[galder.zamarreno]

You can such information via CacheJmxWrapperMBean. See http://www.jboss.org/index.html?module=bb&op=viewtopic&t=156458&postdays=0&postorder=asc&start=10 for more information on how you can get hold of that interface.

Are you running within an application server or standalone?

[galder.zamarreno]

Even if running standalone, you can get hold of that interface programmatically following steps in http://www.jboss.org/file-access/default/members/jbosscache/freezone/docs/3.1.0.GA/userguide_en/html_single/index.html#jmx.registration

Remember that from JDK5 onwards, you can get hold of an MBeanServer from a J2SE environment too.

[somboss]

Thanks for the reply. My application is deployed in tomcat6.

[somboss]

It appears that CacheJmxWrapper and CacheJmxWrapperMBean are deprecated in jbosscache-core-3.1.0.GA

[galder.zamarreno]

Indeed but we're undeprecating them for JBoss Cache 3.2 since they're still valid ways of accessing the cache via jmx.