EntityMultiInstanceSynchronizationInterceptor (JBoss Server API) - JBoss 4.0.1 sp1 server API Documentation 英文版文档

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org.jboss.ejb.plugins
Class EntityMultiInstanceSynchronizationInterceptor

java.lang.Object
  org.jboss.ejb.plugins.AbstractInterceptor
      org.jboss.ejb.plugins.EntitySynchronizationInterceptor
          org.jboss.ejb.plugins.EntityMultiInstanceSynchronizationInterceptor

All Implemented Interfaces:: AllowedOperationsFlags, ContainerPlugin, Interceptor, org.jboss.system.Service

Deprecated. this interceptor was used with Instance Per Transaction containers which do not use a global cache but cache instances per transaction and always passivate instances at commit time (commit option C). The only difference from the EntityInstanceInterceptor is that it uses specific instance Synchronization implementation which always passivates the instance at commit time which is equivalent to commit option C in standard container. Now, the differences between IPT and standard container are:

org.jboss.ejb.plugins.PerTxEntityInstanceCache as the cache implementation;

NoLock as the locking policy;

empty container-cache-conf element.

(alex@jboss.org) The role of this interceptor is to synchronize the state of the cache with the underlying storage. It does this with the ejbLoad and ejbStore semantics of the EJB specification. In the presence of a transaction this is triggered by transaction demarcation. It registers a callback with the underlying transaction monitor through the JTA interfaces. If there is no transaction the policy is to store state upon returning from invocation. The synchronization polices A,B,C of the specification are taken care of here.

WARNING: critical code, get approval from senior developers before changing.

public class EntityMultiInstanceSynchronizationInterceptor
extends EntitySynchronizationInterceptor

Version:: $Revision: 1.16 $
Author:: Bill Burke

Nested Class Summary

protected class EntityMultiInstanceSynchronizationInterceptor.MultiInstanceSynchronization
          Deprecated.

Nested classes inherited from class org.jboss.ejb.plugins.EntitySynchronizationInterceptor

EntitySynchronizationInterceptor.InstanceSynchronization

Field Summary

Fields inherited from class org.jboss.ejb.plugins.EntitySynchronizationInterceptor

commitOption, container, optionDRefreshRate

Fields inherited from class org.jboss.ejb.plugins.AbstractInterceptor

log, nextInterceptor

Fields inherited from interface org.jboss.ejb.AllowedOperationsFlags

IN_AFTER_BEGIN, IN_AFTER_COMPLETION, IN_BEFORE_COMPLETION, IN_BUSINESS_METHOD, IN_EJB_ACTIVATE, IN_EJB_CREATE, IN_EJB_FIND, IN_EJB_HOME, IN_EJB_LOAD, IN_EJB_PASSIVATE, IN_EJB_POST_CREATE, IN_EJB_REMOVE, IN_EJB_STORE, IN_EJB_TIMEOUT, IN_INTERCEPTOR_METHOD, IN_SERVICE_ENDPOINT_METHOD, IN_SET_ENTITY_CONTEXT, IN_SET_MESSAGE_DRIVEN_CONTEXT, IN_SET_SESSION_CONTEXT, IN_UNSET_ENTITY_CONTEXT, NOT_ALLOWED

Constructor Summary

EntityMultiInstanceSynchronizationInterceptor()
          Deprecated.

Method Summary

void create()
          Deprecated.

protected Synchronization createSynchronization(Transaction tx, EntityEnterpriseContext ctx)
          Deprecated.

void start()
          Deprecated.

Methods inherited from class org.jboss.ejb.plugins.EntitySynchronizationInterceptor

getContainer, invoke, invokeHome, register, setContainer, stop

Methods inherited from class org.jboss.ejb.plugins.AbstractInterceptor

destroy, getNext, setNext

Methods inherited from class java.lang.Object

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

Constructor Detail