NPE hibernate session factory websphere portal

[Ayub ali khan]

I have a hibernate code snipped which works on websphere application server. However if I used the same hibernate code on websphere portal (6.0) I get the below stack trace:

line 99 of HibernateUtil.java:99 is

this.currentSession = sessionFactory.openSession();

==================================================================

7/12/08 18:03:34:844 IST 000000eb SystemErr R java.lang.NullPointerException
at au.gov.nsw.railcorp.common.service.util.HibernateUtil.openSession(HibernateUtil.java:99)
at au.gov.nsw.railcorp.common.service.BaseService.openHibernateSession(BaseService.java:14)
at au.gov.nsw.railcorp.healthassess.service.HaService.searchHA(HaService.java:213)
at au.gov.nsw.railcorp.healthassess.view.SearchHAView.uiSearch(SearchHAView.java:251)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java(Compiled Code))
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java(Compiled Code))
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java(Compiled Code))
at java.lang.reflect.Method.invoke(Method.java(Compiled Code))
at com.sun.faces.el.MethodBindingImpl.invoke(MethodBindingImpl.java:127)
at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:73)
at javax.faces.component.UICommand.broadcast(UICommand.java:312)
at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:302)
at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:416)
at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:77)
at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:220)
at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:91)
at com.ibm.faces.webapp.WPFacesGenericPortlet.execute(WPFacesGenericPortlet.java:622)
at com.ibm.faces.webapp.WPFacesGenericPortlet.actionPerformed(WPFacesGenericPortlet.java:160)
at com.ibm.wps.pe.pc.legacy.SPIPortletInterceptorImpl.handleEvents(SPIPortletInterceptorImpl.java:323)
at com.ibm.wps.pe.pc.legacy.invoker.impl.PortletDelegateImpl._dispatch(PortletDelegateImpl.java:378)
at com.ibm.wps.pe.pc.legacy.invoker.impl.PortletDelegateImpl.access$200(PortletDelegateImpl.java:61)
at com.ibm.wps.pe.pc.legacy.invoker.impl.PortletDelegateImpl$Context.callPortlet(PortletDelegateImpl.java:492)
at com.ibm.wps.pe.pc.legacy.services.PortletFilterServiceImpl.doFilter(PortletFilterServiceImpl.java:367)
at com.ibm.wps.pe.pc.legacy.services.PortletFilter.doFilter(PortletFilter.java:42)
at com.ibm.wps.pe.pc.legacy.invoker.impl.PortletDelegateImpl.dispatch(PortletDelegateImpl.java:132)
at org.apache.jetspeed.portlet.Portlet.doPost(Portlet.java:505)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:763)
at com.ibm.wps.pe.pc.legacy.cache.CacheablePortlet.service(CacheablePortlet.java:120)
at javax.servlet.http.HttpServlet.service(HttpServlet.java(Compiled Code))
at org.apache.jetspeed.portlet.Portlet.service(Portlet.java:493)
at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java(Compiled Code))
at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java(Compiled Code))
at com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.include(WebAppRequestDispatcher.java:613)
at com.ibm.wps.pe.om.definition.impl.ServletDefinitionImpl$RDWrapper.include(ServletDefinitionImpl.java:406)
at com.ibm.wps.pe.pc.legacy.invoker.impl.PortletInvokerImpl.callMethod(PortletInvokerImpl.java:374)
at com.ibm.wps.pe.pc.legacy.invoker.impl.PortletInvokerImpl.action(PortletInvokerImpl.java:82)
at com.ibm.wps.pe.pc.legacy.PortletContainerImpl.callPortletMethod(PortletContainerImpl.java:1129)
at com.ibm.wps.pe.pc.legacy.EventEnvironmentImpl.includePortlet(EventEnvironmentImpl.java:171)
at com.ibm.wps.pe.pc.legacy.event.ActionEventImpl.prepare(ActionEventImpl.java:201)
at com.ibm.wps.pe.pc.legacy.event.EventQueueManager.processEventLoop(EventQueueManager.java:87)
at com.ibm.wps.pe.pc.legacy.PortletContainerImpl.performEvents(PortletContainerImpl.java:214)
at com.ibm.wps.pe.pc.PortletContainerImpl.performEvents(PortletContainerImpl.java:241)
at com.ibm.wps.engine.phases.WPActionPhase.processPortlets(WPActionPhase.java:889)
at com.ibm.wps.engine.phases.WPActionPhase.execute(WPActionPhase.java:487)
at com.ibm.wps.state.phases.AbstractActionPhase.next(AbstractActionPhase.java:130)
at com.ibm.wps.engine.Servlet.callPortal(Servlet.java:788)
at com.ibm.wps.engine.Servlet.doGet(Servlet.java:629)
at com.ibm.wps.engine.Servlet.doPost(Servlet.java:814)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:763)
at javax.servlet.http.HttpServlet.service(HttpServlet.java(Compiled Code))
at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java(Compiled Code))
at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1239)
at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:136)
at com.ibm.wps.state.filter.StateCleanup.doFilter(StateCleanup.java:86)
at com.ibm.ws.webcontainer.filter.FilterInstanceWrapper.doFilter(FilterInstanceWrapper.java:142)
at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:121)
at com.ibm.wps.mappingurl.impl.URLAnalyzer.doFilter(URLAnalyzer.java:257)
at com.ibm.ws.webcontainer.filter.FilterInstanceWrapper.doFilter(FilterInstanceWrapper.java:142)
at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:121)
at com.ibm.ws.webcontainer.filter.WebAppFilterChain._doFilter(WebAppFilterChain.java:82)
at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java(Compiled Code))
at com.ibm.ws.webcontainer.webapp.WebApp.handleRequest(WebApp.java:2965)
at com.ibm.ws.webcontainer.webapp.WebGroup.handleRequest(WebGroup.java:221)
at com.ibm.ws.webcontainer.VirtualHost.handleRequest(VirtualHost.java:210)
at com.ibm.ws.webcontainer.WebContainer.handleRequest(WebContainer.java:1931)
at com.ibm.ws.webcontainer.channel.WCChannelLink.ready(WCChannelLink.java:84)
at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleDiscrimination(HttpInboundLink.java:472)
at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleNewInformation(HttpInboundLink.java:411)
at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.ready(HttpInboundLink.java:288)
at com.ibm.ws.ssl.channel.impl.SSLConnectionLink.determineNextChannel(SSLConnectionLink.java:950)
at com.ibm.ws.ssl.channel.impl.SSLConnectionLink$MyReadCompletedCallback.complete(SSLConnectionLink.java:582)
at com.ibm.ws.ssl.channel.impl.SSLReadServiceContext.handleAsyncComplete(SSLReadServiceContext.java:505)
at com.ibm.ws.ssl.channel.impl.SSLReadServiceContext.read(SSLReadServiceContext.java:467)
at com.ibm.ws.ssl.channel.impl.SSLReadServiceContext.read(SSLReadServiceContext.java:305)
at com.ibm.ws.ssl.channel.impl.SSLConnectionLink.readyInboundPostHandshake(SSLConnectionLink.java:655)
at com.ibm.ws.ssl.channel.impl.SSLConnectionLink$MyHandshakeCompletedCallback.complete(SSLConnectionLink.java:364)
at com.ibm.ws.ssl.channel.impl.SSLUtils.handleHandshake(SSLUtils.java(Compiled Code))
at com.ibm.ws.ssl.channel.impl.SSLHandshakeIOCallback.complete(SSLHandshakeIOCallback.java:70)
at com.ibm.ws.tcp.channel.impl.WorkQueueManager.requestComplete(WorkQueueManager.java:566)
at com.ibm.ws.tcp.channel.impl.WorkQueueManager.attemptIO(WorkQueueManager.java(Compiled Code))
at com.ibm.ws.tcp.channel.impl.WorkQueueManager.workerRun(WorkQueueManager.java:952)
at com.ibm.ws.tcp.channel.impl.WorkQueueManager$Worker.run(WorkQueueManager.java:1039)
at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java(Compiled Code))

The same code works on websphere application server 6.0.0.9

Thank you.
--Ayub

[Bigwood Liu]

Seems your sessionFactory is null, did you instantiate your sessionFactory?

Check how did you implement the HibernateUtil.java. Is there anything you obtained by using JNDI look up? Where did you put your hibernate.cfg.xml
file, if the path is correct?

In addition, Why not use sessionFactory.getCurrentSession()? By getting the session this way, you do not bother to close the session. Do not forget to config your hibernate.cfg.xml file when you want to use getCurrentSession().
[ December 17, 2008: Message edited by: damu liu ]

[Ayub ali khan]

thank you Damu, everything was proper, dont know why sessionFactory was being displayed as null. I was able to resolve the error by changing to datasource configuration with spring.

may be some issue about where I placed the config files.

Thank you
Ayub