This package contains classes that allow easy access to EJBs. The basis are AOP interceptors run before and after the EJB invocation. In particular, the classes in this package allow transparent access to stateless session beans (SLSBs) with local interfaces, avoiding the need for application code using them to use EJB-specific APIs and JNDI lookups, and work with business interfaces that could be implemented without using EJB. This provides a valuable decoupling of client (such as web components) and business objects (which may or may not be EJBs). This gives us the choice of introducing EJB into an application (or removing EJB from an application) without affecting code using business objects.

The motivation for the classes in this package are discussed in Chapter 11 of Expert One-On-One J2EE Design and Development by Rod Johnson (Wrox, 2002).

However, the implementation and naming of classes in this package has changed. It now uses FactoryBeans and AOP, rather than the custom bean definitions described in Expert One-on-One J2EE.


AbstractRemoteSlsbInvokerInterceptor Base class for interceptors proxying remote Stateless Session Beans. 
AbstractSlsbInvokerInterceptor Base class for AOP interceptors invoking local or remote Stateless Session Beans. 
LocalSlsbInvokerInterceptor Invoker for a local Stateless Session Bean. 
LocalStatelessSessionProxyFactoryBean Convenient FactoryBean for local Stateless Session Bean (SLSB) proxies. 
SimpleRemoteSlsbInvokerInterceptor Basic invoker for a remote Stateless Session Bean. 
SimpleRemoteStatelessSessionProxyFactoryBean Convenient FactoryBean for remote SLSB proxies. 


EjbAccessException Exception that gets thrown when an EJB stub cannot be accessed properly.