[jboss-user] [JBoss Cache] - exception from CacheJmxWrapperMBean.getCache()
Peter Petrovics
do-not-reply at jboss.com
Mon Jun 14 12:47:25 EDT 2010
Peter Petrovics [http://community.jboss.org/people/szerintedmi] created the discussion
"exception from CacheJmxWrapperMBean.getCache()"
To view the discussion, visit: http://community.jboss.org/message/547863#547863
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I'm trying to reach the same cache from two different webapps running on the same Tomcat.
The first time it starts I'm registering with the following code:
{code}
jbossCache = new DefaultCacheFactory().createCache(configFile);
cacheJmxWrapper = new CacheJmxWrapper(jbossCache);
ObjectInstance oi = mBeanServer.registerMBean(cacheJmxWrapper, on);
// tryied this way too:
//JmxRegistrationManager jmxRegManager = new JmxRegistrationManager(mBeanServer, jbossCache, on);
//jmxRegManager.registerAllMBeans();
log.info("Cache started. MBean objName: " + oi.getObjectName());
{code}
I try to get a reference through JMX with this code:
{code}
mBeanServer = ManagementFactory.getPlatformMBeanServer();
cacheJmxWrapper =
(CacheJmxWrapperMBean) MBeanServerInvocationHandler.newProxyInstance(mBeanServer, on,
CacheJmxWrapperMBean.class, false);
Object o; // just to show the issue
o = cacheJmxWrapper.getCache();
{code}
I receive the following exception from the last line:
{code}
java.lang.ClassCastException: org.jboss.cache.invocation.CacheInvocationDelegate cannot be cast to org.jboss.cache.Cache
at $Proxy17.getCache(Unknown Source)
{code}
I tried several different methods to register/get reference.
Am I missing a point or is it a bug?
As I read JNDI would be a workaroun but can't find proper description how to setup (and setting on production server would be a bit complicated because of restricted access). I there any other way to reach the same cache from different webapps?
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