spring-context

org.springframework.ejb.access
Class LocalStatelessSessionProxyFactoryBean

java.lang.Object
  extended by org.springframework.jndi.JndiAccessor
      extended by org.springframework.jndi.JndiLocatorSupport
          extended by org.springframework.jndi.JndiObjectLocator
              extended by org.springframework.ejb.access.AbstractSlsbInvokerInterceptor
                  extended by org.springframework.ejb.access.LocalSlsbInvokerInterceptor
                      extended by org.springframework.ejb.access.LocalStatelessSessionProxyFactoryBean
All Implemented Interfaces:
org.aopalliance.aop.Advice, org.aopalliance.intercept.Interceptor, org.aopalliance.intercept.MethodInterceptor, org.springframework.beans.factory.Aware, org.springframework.beans.factory.BeanClassLoaderAware, org.springframework.beans.factory.FactoryBean<java.lang.Object>, org.springframework.beans.factory.InitializingBean

public class LocalStatelessSessionProxyFactoryBean
extends LocalSlsbInvokerInterceptor
implements org.springframework.beans.factory.FactoryBean<java.lang.Object>, org.springframework.beans.factory.BeanClassLoaderAware

Convenient FactoryBean for local Stateless Session Bean (SLSB) proxies. Designed for EJB 2.x, but works for EJB 3 Session Beans as well.

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

If you want control over interceptor chaining, use an AOP ProxyFactoryBean with LocalSlsbInvokerInterceptor rather than rely on this class.

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).

Since:
09.05.2003
Author:
Rod Johnson, Colin Sampaleanu
See Also:
AbstractSlsbInvokerInterceptor.setLookupHomeOnStartup(boolean), AbstractSlsbInvokerInterceptor.setCacheHome(boolean)

Field Summary
 
Fields inherited from class org.springframework.jndi.JndiLocatorSupport
CONTAINER_PREFIX
 
Fields inherited from class org.springframework.jndi.JndiAccessor
logger
 
Constructor Summary
LocalStatelessSessionProxyFactoryBean()
           
 
Method Summary
 void afterPropertiesSet()
          Fetches EJB home on startup, if necessary.
 java.lang.Class getBusinessInterface()
          Return the business interface of the EJB we're proxying.
 java.lang.Object getObject()
           
 java.lang.Class<?> getObjectType()
           
 boolean isSingleton()
           
 void setBeanClassLoader(java.lang.ClassLoader classLoader)
           
 void setBusinessInterface(java.lang.Class businessInterface)
          Set the business interface of the EJB we're proxying.
 
Methods inherited from class org.springframework.ejb.access.LocalSlsbInvokerInterceptor
getCreateMethod, getSessionBeanInstance, invokeInContext, newSessionBeanInstance, releaseSessionBeanInstance, removeSessionBeanInstance
 
Methods inherited from class org.springframework.ejb.access.AbstractSlsbInvokerInterceptor
create, getHome, invoke, isHomeRefreshable, refreshHome, setCacheHome, setExposeAccessContext, setLookupHomeOnStartup
 
Methods inherited from class org.springframework.jndi.JndiObjectLocator
getExpectedType, getJndiName, lookup, setExpectedType, setJndiName
 
Methods inherited from class org.springframework.jndi.JndiLocatorSupport
convertJndiName, isResourceRef, lookup, lookup, setResourceRef
 
Methods inherited from class org.springframework.jndi.JndiAccessor
getJndiEnvironment, getJndiTemplate, setJndiEnvironment, setJndiTemplate
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

LocalStatelessSessionProxyFactoryBean

public LocalStatelessSessionProxyFactoryBean()
Method Detail

setBusinessInterface

public void setBusinessInterface(java.lang.Class businessInterface)
Set the business interface of the EJB we're proxying. This will normally be a super-interface of the EJB local component interface. Using a business methods interface is a best practice when implementing EJBs.

Parameters:
businessInterface - set the business interface of the EJB

getBusinessInterface

public java.lang.Class getBusinessInterface()
Return the business interface of the EJB we're proxying.


setBeanClassLoader

public void setBeanClassLoader(java.lang.ClassLoader classLoader)
Specified by:
setBeanClassLoader in interface org.springframework.beans.factory.BeanClassLoaderAware

afterPropertiesSet

public void afterPropertiesSet()
                        throws javax.naming.NamingException
Description copied from class: AbstractSlsbInvokerInterceptor
Fetches EJB home on startup, if necessary.

Specified by:
afterPropertiesSet in interface org.springframework.beans.factory.InitializingBean
Overrides:
afterPropertiesSet in class AbstractSlsbInvokerInterceptor
Throws:
javax.naming.NamingException
See Also:
AbstractSlsbInvokerInterceptor.setLookupHomeOnStartup(boolean), AbstractSlsbInvokerInterceptor.refreshHome()

getObject

public java.lang.Object getObject()
Specified by:
getObject in interface org.springframework.beans.factory.FactoryBean<java.lang.Object>

getObjectType

public java.lang.Class<?> getObjectType()
Specified by:
getObjectType in interface org.springframework.beans.factory.FactoryBean<java.lang.Object>

isSingleton

public boolean isSingleton()
Specified by:
isSingleton in interface org.springframework.beans.factory.FactoryBean<java.lang.Object>

spring-context