Freddy (and Aaron),
Offhand THANK YOU for the help! While it DID help I'm afraid I'm not
there yet... .
So I added the @PostConstruct annotation (and
<context:annotation-config /> in the applicationContext.xml to
register things) and have the following code:
@Service("modalityService")
public class ModalityServiceImpl implements ModalityService {
@Autowired
private ModalityDao modalityDao;
private ModalityCache modalityCache;
public ModalityServiceImpl() {
}
@PostConstruct
public void initService() {
List<Modality> modalityList = this.modalityDao.findAll();
this.modalityCache = new ModalityCache();
this.modalityCache.init(modalityList);
}
And the @PostConstruct indeed helped as the initService method is
getting executed however now I am back to the issue with Stripersist
generating a NPE in the following method call:
/**
* Finds the EntityManagerFactory which is associated with the specified
* persistence unit. Normally you shouldn't use this class because
* Stripersist won't clean up any EntityManagers that you create.
*
* @param persistenceUnit the name of the persistence unit
* @return an EntityManagerFactory or null
*/
public static EntityManagerFactory getEntityManagerFactory(String
persistenceUnit)
{
return entityManagerFactories.get(persistenceUnit);
}
Where: entityManagerFactories is NULL!!!!! So it is almost like even
though the @PostConstruct annotated method gets invoked on bean post
creation a layer of the onion has been lifted and now the problem
appears that Stripersist hasn't completed its initialization. I have to
think there MUST be a way to solve this!!! AHhhhhh???
Full stack trace below....
Many Thanks,
--Nikolaos
[#|2010-05-26T14:07:50.795-0400|INFO|glassfishv3.0|javax.enterprise.system.std.com.sun.enterprise.v3.services.impl|_ThreadID=11;_ThreadName=FelixStartLevel;|[14:07:50,774]
ERROR
org.springframework.web.context.ContextLoader.initWebApplicationContext
- Context initialization failed
org.springframework.beans.factory.BeanCreationException: Error creating
bean with name 'modalityService': Invocation of init method failed;
nested exception is java.lang.NullPointerException
at
org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessBeforeInitialization(InitDestroyAnnotationBeanPostProcessor.java:147)
at
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsBeforeInitialization(AbstractAutowireCapableBeanFactory.java:350)
at
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1331)
at
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:473)
at
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory$1.run(AbstractAutowireCapableBeanFactory.java:409)
at java.security.AccessController.doPrivileged(Native Method)
at
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:380)
at
org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:264)
at
org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222)
at
org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:261)
at
org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:185)
at
org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:164)
at
org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:429)
at
org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:728)
at
org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:380)
at
org.springframework.web.context.ContextLoader.createWebApplicationContext(ContextLoader.java:255)
at
org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:199)
at
org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:45)
at
org.apache.catalina.core.StandardContext.contextListenerStart(StandardContext.java:4591)
at
com.sun.enterprise.web.WebModule.contextListenerStart(WebModule.java:535)
at
org.apache.catalina.core.StandardContext.start(StandardContext.java:5193)
at com.sun.enterprise.web.WebModule.start(WebModule.java:499)
at
org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:928)
at
org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:912)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:694)
at
com.sun.enterprise.web.WebContainer.loadWebModule(WebContainer.java:1933)
at
com.sun.enterprise.web.WebContainer.loadWebModule(WebContainer.java:1605)
at com.sun.enterprise.web.WebApplication.start(WebApplication.java:90)
at org.glassfish.internal.data.EngineRef.start(EngineRef.java:126)
at org.glassfish.internal.data.ModuleInfo.start(ModuleInfo.java:241)
at
org.glassfish.internal.data.ApplicationInfo.start(ApplicationInfo.java:236)
at
com.sun.enterprise.v3.server.ApplicationLifecycle.deploy(ApplicationLifecycle.java:339)
at
com.sun.enterprise.v3.server.ApplicationLoaderService.processApplication(ApplicationLoaderService.java:340)
at
com.sun.enterprise.v3.server.ApplicationLoaderService.postConstruct(ApplicationLoaderService.java:163)
at
com.sun.hk2.component.AbstractWombImpl.inject(AbstractWombImpl.java:174)
at com.sun.hk2.component.ConstructorWomb$1.run(ConstructorWomb.java:87)
at java.security.AccessController.doPrivileged(Native Method)
at
com.sun.hk2.component.ConstructorWomb.initialize(ConstructorWomb.java:84)
at com.sun.hk2.component.AbstractWombImpl.get(AbstractWombImpl.java:77)
at
com.sun.hk2.component.SingletonInhabitant.get(SingletonInhabitant.java:58)
at com.sun.hk2.component.LazyInhabitant.get(LazyInhabitant.java:107)
at
com.sun.hk2.component.AbstractInhabitantImpl.get(AbstractInhabitantImpl.java:60)
at
com.sun.enterprise.v3.server.AppServerStartup.run(AppServerStartup.java:236)
at
com.sun.enterprise.v3.server.AppServerStartup.start(AppServerStartup.java:128)
at com.sun.enterprise.module.bootstrap.Main.launch(Main.java:457)
at com.sun.enterprise.module.bootstrap.Main.launch(Main.java:401)
at org.jvnet.hk2.osgiadapter.HK2Main.start(HK2Main.java:125)
at
org.apache.felix.framework.util.SecureAction.startActivator(SecureAction.java:640)
at org.apache.felix.framework.Felix.activateBundle(Felix.java:1700)
at org.apache.felix.framework.Felix.startBundle(Felix.java:1622)
at org.apache.felix.framework.BundleImpl.start(BundleImpl.java:915)
at org.jvnet.hk2.osgimain.Main.start(Main.java:140)
at
org.apache.felix.framework.util.SecureAction.startActivator(SecureAction.java:640)
at org.apache.felix.framework.Felix.activateBundle(Felix.java:1700)
at org.apache.felix.framework.Felix.startBundle(Felix.java:1622)
at org.apache.felix.framework.Felix.setActiveStartLevel(Felix.java:1077)
at
org.apache.felix.framework.StartLevelImpl.run(StartLevelImpl.java:264)
at java.lang.Thread.run(Thread.java:637)
Caused by: java.lang.NullPointerException
at
org.stripesstuff.stripersist.Stripersist.getEntityManagerFactory(Stripersist.java:401)
at
org.stripesstuff.stripersist.Stripersist.getEntityManager(Stripersist.java:495)
at
org.lightagents.ws.dao.impl.stripersist.BaseDaoImpl.load(BaseDaoImpl.java:70)
at
org.lightagents.ws.dao.impl.stripersist.ModalityDaoImpl.load(ModalityDaoImpl.java:50001)
at
org.lightagents.ws.dao.impl.stripersist.BaseDaoImpl.load(BaseDaoImpl.java:39)
at
org.lightagents.ws.dao.impl.stripersist.ModalityDaoImpl.load(ModalityDaoImpl.java:50001)
at
org.lightagents.ws.dao.impl.stripersist.ModalityDaoImpl.findAll(ModalityDaoImpl.java:20)
at
org.lightagents.ws.service.impl.ModalityServiceImpl.initService(ModalityServiceImpl.java:35)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at
org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleElement.invoke(InitDestroyAnnotationBeanPostProcessor.java:297)
at
org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleMetadata.invokeInitMethods(InitDestroyAnnotationBeanPostProcessor.java:250)
at
org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessBeforeInitialization(InitDestroyAnnotationBeanPostProcessor.java:144)
... 57 more
|#]
Freddy Daoud wrote:
Hi Nikolaos,
I guess what I need is a WAY to perform POST initialization on this
Spring managed Service object. If I was dealing with an ActionBean then
an @AFTER on a particular life cycle event I imagine would do the trick
but this is not an Action Bean.
You are right, it is a bad idea to do any work in the constructor in
this case; you need to let Spring finish its wiring.
Indeed there is a standard annotation for doing post-initialization
work:
javax.annotation.PostConstruct. Spring recognizes this annotation when
its
annotation post processor is registered.[1]
So all you need is something like:
@PostConstruct
public void init() {
// do initialization work
// the name of the method can be something else than 'init'
}
I use this mechanism a lot and it works well.
Hope that helps.
Cheers,
Freddy
[1]:
http://static.springsource.org/spring/docs/2.5.x/reference/beans.html#beans-postconstruct-and-predestroy-annotations
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