custom timedCacheFactory problem

[lost_traveller]

We have a problem whereby a user is logged out after 30 minutes and JBoss attempts to re-login, since we use a custom Principal which contains a session id the session id is lost.

The reason a user logs out after 30 minutes is because in jboss-service.xml DefaultCacheTimeout is set to 1800 seconds. What we would like is not to specify a time but to allow a users timeout to be refreshed each time a secure method is called, which is possible because org.jboss.util.TimedCachePolicy contains a refersh() method, which is currently hard-coded to return false. So what we have done is extend TimedCachePolicy and override refresh() to refresh the timeout:

public class TimedRefreshCachePolicy extends TimedCachePolicy implements Serializable
{

 /**
 * @see org.jboss.util.TimedCachePolicy#insert(java.lang.Object, java.lang.Object)
 */
 @Override
 public void insert(Object key, Object value)
 {
 super.insert(key, new RefreshTimedEntry(getDefaultLifetime(), value));
 }

 /**
 * The default implementation of TimedEntry used to wrap non-TimedEntry objects inserted into the
 * cache.
 */
 static class RefreshTimedEntry implements TimedEntry, Serializable
 {

 private long expirationTime = -1;

 private Object value = null;

 private long lifetime = -1;

 RefreshTimedEntry(final long lifetime, final Object value)
 {
 this.expirationTime = 1000 * lifetime;
 this.value = value;
 this.lifetime = lifetime;
 }

 public void init(long now)
 {
 expirationTime += now;
 }

 public boolean isCurrent(long now)
 {
 return expirationTime > now;
 }

 public boolean refresh()
 {
 // this is called to refresh the time since the last call to this item in the
 // cache, return true to indicate that a refresh took place and that the item
 // is still valid
 expirationTime = System.currentTimeMillis() + (1000 * lifetime);
 return true;
 }

 public void destroy()
 {
 }

 public Object getValue()
 {
 return value;
 }
 }

}

According to chapter 8 we can configure our own cache policy:

This is done by appending the name of the security domain to this name when looking up the CachePolicy for a domain

We have create an MBean to bind TimedRefreshCachePolicy to our security domain:

public class PetStoreService extends ServiceMBeanSupport implements PetStoreServiceMBean
{
......
 new InitialContext().bind("java:/timedCacheFactory/petstore", Class.forName("com.foo.TimedRefreshCachePolicy").newInstance());

 Object obj0 = new InitialContext().lookup("java:/timedCacheFactory");
 Object obj1 = new InitialContext().lookup("java:/timedCacheFactory/petstore");
 Object obj3 = new InitialContext().lookup("java:/timedCacheFactory/sdmfhsjhdfcnb");
....
}

The problem is TimedRefreshCachePolicy won't bind to java:/timedCacheFactory/petstore in fact we can insert any text after java:/timedCacheFactory and it will return a TimedCachePolicy, from the code above:
obj0 returns some proxy
obj1 returns a TimedCachePolicy
obj2 returns a TimedCachePolicy

So how do I bind my TimedRefreshCachePolicy to java:/timedCacheFactory/petstore? or have we got this wrong and implemented it in the wrong way? We would preferably like a CachePolicy on a per domain basis, without having to change any JBoss configuration.