org.springframework.ejb.access

Class LocalSlsbInvokerInterceptor

  • All Implemented Interfaces:
    Advice, Interceptor, MethodInterceptor, InitializingBean
    Direct Known Subclasses:
    LocalStatelessSessionProxyFactoryBean


    public class LocalSlsbInvokerInterceptor
    extends AbstractSlsbInvokerInterceptor
    Invoker for a local Stateless Session Bean. Designed for EJB 2.x, but works for EJB 3 Session Beans as well.

    Caches the home object, since a local EJB home can never go stale. See JndiObjectLocator 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 by default 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 best solution is to set the lookupHomeOnStartup property to false, in which case the home will be fetched on first access to the EJB. (This flag is only true by default for backwards compatibility reasons).

    Author:
    Rod Johnson, Juergen Hoeller
    See Also:
    AbstractSlsbInvokerInterceptor.setLookupHomeOnStartup(boolean), AbstractSlsbInvokerInterceptor.setCacheHome(boolean)
    • Constructor Detail

      • LocalSlsbInvokerInterceptor

        public LocalSlsbInvokerInterceptor()
    • Method Detail

      • getSessionBeanInstance

        protected java.lang.Object getSessionBeanInstance()
                                                   throws javax.naming.NamingException,
                                                          java.lang.reflect.InvocationTargetException
        Return an EJB instance to delegate the call to. Default implementation delegates to newSessionBeanInstance.
        Throws:
        javax.naming.NamingException - if thrown by JNDI
        java.lang.reflect.InvocationTargetException - if thrown by the create method
        See Also:
        newSessionBeanInstance()
      • newSessionBeanInstance

        protected java.lang.Object newSessionBeanInstance()
                                                   throws javax.naming.NamingException,
                                                          java.lang.reflect.InvocationTargetException
        Return a new instance of the stateless session bean. Can be overridden to change the algorithm.
        Throws:
        javax.naming.NamingException - if thrown by JNDI
        java.lang.reflect.InvocationTargetException - if thrown by the create method
        See Also:
        AbstractSlsbInvokerInterceptor.create()