org.jboss.cache.interceptors
Class ActivationInterceptor

java.lang.Object
  |
  +--org.jboss.cache.interceptors.Interceptor
        |
        +--org.jboss.cache.interceptors.CacheLoaderInterceptor
              |
              +--org.jboss.cache.interceptors.ActivationInterceptor

public class ActivationInterceptor

extends CacheLoaderInterceptor

Loads nodes that don't exist at the time of the call into memory from the CacheLoader. If the nodes were evicted earlier then we remove them from the cache loader after their attributes have been initalized and their children have been loaded in memory.

Version:

$Id: ActivationInterceptor.java,v 1.11 2005/09/09 10:52:14 hmesha Exp $

Author:

{Hany Mesha}

Field Summary

protected static java.lang.Object	NULL
protected EDU.oswego.cs.dl.util.concurrent.ConcurrentHashMap	transactions List that we have registered for
protected javax.transaction.TransactionManager	tx_mgr
protected TransactionTable	tx_table

Fields inherited from class org.jboss.cache.interceptors.CacheLoaderInterceptor

loader

Constructor Summary

ActivationInterceptor()

Method Summary

protected CacheLoader	getLoader()
java.lang.Object	invoke(org.jgroups.blocks.MethodCall m) Makes sure a node is loaded into memory before a call executes.

Methods inherited from class org.jboss.cache.interceptors.CacheLoaderInterceptor

getNode, loadAttributesFromCacheLoader, lock, setCache

Methods inherited from class org.jboss.cache.interceptors.Interceptor

getNext, setNext

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

tx_mgr

protected javax.transaction.TransactionManager tx_mgr

tx_table

protected TransactionTable tx_table

transactions

protected EDU.oswego.cs.dl.util.concurrent.ConcurrentHashMap transactions

List that we have registered for

NULL

protected static final java.lang.Object NULL

Constructor Detail

ActivationInterceptor

public ActivationInterceptor()

Method Detail

invoke

public java.lang.Object invoke(org.jgroups.blocks.MethodCall m)
                        throws java.lang.Throwable

Makes sure a node is loaded into memory before a call executes. If node is already loaded and its attributes already initialized, then remove it from the cache loader and notify the cache listeners that the node has been activated.

Overrides:

invoke in class CacheLoaderInterceptor

Parameters:

m -

Returns:

Throws:

java.lang.Throwable

getLoader

protected CacheLoader getLoader()