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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
public class LocalSlsbInvokerInterceptor
Invoker for a local Stateless Session Bean. Caches the home object. 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).
AbstractSlsbInvokerInterceptor.setLookupHomeOnStartup(boolean)
,
AbstractSlsbInvokerInterceptor.setCacheHome(boolean)
Field Summary |
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Fields inherited from class org.springframework.jndi.JndiLocatorSupport |
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CONTAINER_PREFIX |
Fields inherited from class org.springframework.jndi.JndiAccessor |
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logger |
Constructor Summary | |
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LocalSlsbInvokerInterceptor()
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Method Summary | |
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protected EJBLocalObject |
getSessionBeanInstance()
Return an EJB instance to delegate the call to. |
Object |
invoke(MethodInvocation invocation)
This implementation "creates" a new EJB instance for each invocation. |
protected EJBLocalObject |
newSessionBeanInstance()
Return a new instance of the stateless session bean. |
protected void |
releaseSessionBeanInstance(EJBLocalObject ejb)
Release the given EJB instance. |
protected void |
removeSessionBeanInstance(EJBLocalObject ejb)
Remove the given EJB instance. |
Methods inherited from class org.springframework.ejb.access.AbstractSlsbInvokerInterceptor |
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afterPropertiesSet, create, getCreateMethod, getHome, isHomeRefreshable, refreshHome, setCacheHome, setLookupHomeOnStartup |
Methods inherited from class org.springframework.jndi.JndiObjectLocator |
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getExpectedType, getJndiName, lookup, setExpectedType, setJndiName |
Methods inherited from class org.springframework.jndi.JndiLocatorSupport |
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convertJndiName, isResourceRef, lookup, lookup, setResourceRef |
Methods inherited from class org.springframework.jndi.JndiAccessor |
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getJndiEnvironment, getJndiTemplate, setJndiEnvironment, setJndiTemplate |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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public LocalSlsbInvokerInterceptor()
Method Detail |
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public Object invoke(MethodInvocation invocation) throws Throwable
Alternatively, override getSessionBeanInstance and releaseSessionBeanInstance to change EJB instance creation, for example to hold a single shared EJB instance.
Throwable
protected EJBLocalObject getSessionBeanInstance() throws NamingException, InvocationTargetException
NamingException
- if thrown by JNDI
InvocationTargetException
- if thrown by the create methodnewSessionBeanInstance()
protected void releaseSessionBeanInstance(EJBLocalObject ejb)
ejb
- the EJB instance to releaseremoveSessionBeanInstance(javax.ejb.EJBLocalObject)
protected EJBLocalObject newSessionBeanInstance() throws NamingException, InvocationTargetException
NamingException
- if thrown by JNDI
InvocationTargetException
- if thrown by the create methodAbstractSlsbInvokerInterceptor.create()
protected void removeSessionBeanInstance(EJBLocalObject ejb)
ejb
- the EJB instance to removeEJBLocalObject.remove()
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