org.springframework.ejb.access

Class LocalStatelessSessionProxyFactoryBean

java.lang.Object

org.springframework.jndi.JndiAccessor

org.springframework.jndi.JndiLocatorSupport

org.springframework.jndi.JndiObjectLocator

org.springframework.ejb.access.AbstractSlsbInvokerInterceptor

org.springframework.ejb.access.LocalSlsbInvokerInterceptor

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<Object>, org.springframework.beans.factory.InitializingBean

public class LocalStatelessSessionProxyFactoryBean
extends LocalSlsbInvokerInterceptor
implements org.springframework.beans.factory.FactoryBean<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

Constructors

Constructor and Description
LocalStatelessSessionProxyFactoryBean()

Method Summary

Modifier and Type	Method and Description
void	afterPropertiesSet() Fetches EJB home on startup, if necessary.
Class<?>	getBusinessInterface() Return the business interface of the EJB we're proxying.
Object	getObject()
Class<?>	getObjectType()
boolean	isSingleton()
void	setBeanClassLoader(ClassLoader classLoader)
void	setBusinessInterface(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(@Nullable
                                 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

@Nullable
public Class<?> getBusinessInterface()

Return the business interface of the EJB we're proxying.

setBeanClassLoader

public void setBeanClassLoader(ClassLoader classLoader)

Specified by:

setBeanClassLoader in interface org.springframework.beans.factory.BeanClassLoaderAware

afterPropertiesSet

public void afterPropertiesSet()
                        throws 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:

NamingException

See Also:

AbstractSlsbInvokerInterceptor.setLookupHomeOnStartup(boolean), AbstractSlsbInvokerInterceptor.refreshHome()

getObject

@Nullable
public Object getObject()

Specified by:

getObject in interface org.springframework.beans.factory.FactoryBean<Object>

getObjectType

public Class<?> getObjectType()

Specified by:

getObjectType in interface org.springframework.beans.factory.FactoryBean<Object>

isSingleton

public boolean isSingleton()

Specified by:

isSingleton in interface org.springframework.beans.factory.FactoryBean<Object>