org.springframework.ejb.access
Class LocalSlsbInvokerInterceptor

java.lang.Object
  org.springframework.jndi.AbstractJndiLocator
      org.springframework.ejb.access.AbstractSlsbInvokerInterceptor
          org.springframework.ejb.access.LocalSlsbInvokerInterceptor

All Implemented Interfaces:

org.aopalliance.aop.Advice, InitializingBean, org.aopalliance.intercept.Interceptor, org.aopalliance.intercept.MethodInterceptor

Direct Known Subclasses:

LocalStatelessSessionProxyFactoryBean

public class LocalSlsbInvokerInterceptor

extends AbstractSlsbInvokerInterceptor

Invoker for a local Stateless Session Bean. Caches the home object. A local EJB home can never go stale.

See AbstractJndiLocator for info on how to specify the JNDI location of the target EJB.

In a bean container, this class is normally best used as a singleton. However, if that bean container pre-instantiates singletons (as do the XML ApplicationContext variants) you may have a problem if the bean container is loaded before the EJB container loads the target EJB. That is because the JNDI lookup will be performed in the init method of this class and cached, but the EJB will not have been bound at the target location yet. The solution is to not pre-instantiate this factory object, but allow it to be created on first use. In the XML containers, this is controlled via the "lazy-init" attribute.

Version:

$Id: LocalSlsbInvokerInterceptor.java,v 1.10 2004/03/19 21:35:54 johnsonr Exp $

Author:

Rod Johnson

Field Summary

Fields inherited from class org.springframework.jndi.AbstractJndiLocator

CONTAINER_PREFIX, logger

Constructor Summary

LocalSlsbInvokerInterceptor()

Method Summary

java.lang.Object	invoke(org.aopalliance.intercept.MethodInvocation invocation) This is the last invoker in the chain: invoke the EJB.
protected javax.ejb.EJBLocalObject	newSessionBeanInstance()

Methods inherited from class org.springframework.ejb.access.AbstractSlsbInvokerInterceptor

afterLocated, create, getCachedEjbHome, located

Methods inherited from class org.springframework.jndi.AbstractJndiLocator

afterPropertiesSet, getJndiEnvironment, getJndiName, getJndiTemplate, isResourceRef, setJndiEnvironment, setJndiName, setJndiTemplate, setResourceRef

Methods inherited from class java.lang.Object

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

Constructor Detail

LocalSlsbInvokerInterceptor

public LocalSlsbInvokerInterceptor()

Method Detail

newSessionBeanInstance

protected javax.ejb.EJBLocalObject newSessionBeanInstance()
                                                   throws java.lang.reflect.InvocationTargetException

Throws:

java.lang.reflect.InvocationTargetException

invoke

public java.lang.Object invoke(org.aopalliance.intercept.MethodInvocation invocation)
                        throws java.lang.Throwable

This is the last invoker in the chain: invoke the EJB.

Throws:

java.lang.Throwable